FlucsPro User Guide <Virtual Environment> 5.9

Transcription

1 FlucsPro User Guide <Virtual Environment> 5.9 Page 1 of 80

2 Contents 1. Introduction to FlucsPro Calculations Menus File Menu Save Copy Bitmap Save Bitmap Recently Used File List Edit menu Undo Redo Selection Set Selection Set Sub-menu Custom Attributes Assign Template Assign surface types Query Model Add Working Plane Delete Working Plane Add Task Area Delete Task Area Design Analysis Clear Analysis Results View Menu Flucs Bar Toolbars Viewports Viewports Sub-menu Rotation Rotation Sub-menu Zoom Zoom Sub-menu Colour Colour Sub-menu Refresh Luminaires Luminaire numbers Luminaire photometric webs Illuminance Luminance No Lighting Artificial lighting Day Lighting Daylight Factor Combined Lighting Contour Levels Filled Contour Levels Grey Shading Filled Threshold Contour Threshold Table Include Select Colour Set Page 2 of 80

3 Results Save Results Settings Menu Grid Locks Preferences Location Site Orientation Help Menu Help Topics About FlucsPro Toolbars Model Toolbar View Toolbar Dialogue Boxes Preferences Dialogue Box Design Dialogue Box OK Button Cancel Button Design Parameters Page Room Surface Maintenance Factor Lamp Survival Factor Combo Box Enter Lamp Survival Factor as a Lamp Replacement Period? Lamp Replacement Period for Lamp Survival Factor Lookup Luminaire Maintenance Factor Combo Lamp Lumen Maintenance Factor Combo Box Enter Lamp Lumen Maintenance Factor as a Lamp Replacement Period? Lamp Replacement Period for Lamp Lumen Maintenance Factor Lookup Design Illuminance Combo Design Limiting Glare Index Combo Select Light Fitting Button Luminaire Lamp Lamp Colour Room Page Room Title Room Length Room Width Room Height Working Surface Height Luminaire Mounting Height Reflectances Ceiling Reflectance Combo Wall 1 Reflectance Combo Wall 2 Reflectance Combo Wall 3 Reflectance Combo Wall 4 Reflectance Combo Floor Reflectance Combo Constraints Page Ceiling Grid Snap Combo No Constraints Option Specify in Length Check Button Specify in Width Check Button Offsets and Spacings Option Numbers Option Clear Existing Fittings Page 3 of 80

4 Clear Existing Fittings Even if Design Fails Preferred Orientation Page Preferred Orientation Combo Design Results Dialogue Box Solutions List OK Button Cancel Button Design Results Viewer Analysis Dialogue Box Back Button Next Button Finish Button Cancel Button Illuminance Page Illuminance Type Margin Page Working Surface Margin Calculation Quality Page Quality slider Advanced button Include room components toggle button Include a ground plane toggle button Artificial Lighting Page Calculate Artificial Lighting Toggle Button Divide Large Luminaires into Smaller Light Sources Toggle Button Day Lighting Page Calculate Day Lighting Toggle Button Calculate for LEED NC 2.2 Credit 8.1 Toggle Button Sky model Zenith Luminance Equivalent Illuminance on the Horizontal Plane Date and time False Ceiling Page Create a False Ceiling Toggle Button Use the Mounting Plane Height Toggle Button Height of False Ceiling Above the Floor Reflectance Advanced quality settings Dialogue Box Surfaces page Receive and reflect light Toggle Buttons Obstruct light Toggle Buttons Internal room surfaces Component surfaces External room surfaces Surfaces from other rooms Surfaces from obstructions file Ground plane Grid Size 1 for Working Planes, Task Areas and Luminaires Grid Size 2 for Internal Room Surfaces and Component Surfaces Grid Size 3 for External Surfaces Reflections Page Calculation Method Combo Minimum Patch Flux for Reflection Maximum Number of Reflections Progress Dialogue Box Progress Caption Page 4 of 80

5 Progress Status Progress Bar Progress Percent Cancel Button Daylight Threshold Dialogue Box Value Invert Button Apply Button Polyline Button Close Button Analysis Results Viewer Calculation Cleanup Dialogue Box Surface Browser Flucs Dialogue Bar General Page Room Name Room ID Floor Area Volume Room Lighting Template Lighting Page Default Check Boxes Design Illuminance Design Limiting Glare Index Working Surface Height Room Surface Maintenance Factor Lamp Survival Factor Combo Box Enter Lamp Survival Factor as a Lamp Replacement Period? Lamp Replacement Period for Lamp Survival Factor Lookup Create working Plane Dialogue Box Name Height Elevation Rotation Create Task Area Dialogue Box Name Close Button Cancel Button Custom Attributes Dialogue Box Assign Template Dialogue Box Select Template List Box Surface Properties Dialogue Box Orientation Tilt Area Opening Properties Dialogue Box Assign surface properties dialogue box Picture Copy button Save button Colours button Select category list box Model surfaces of the following type list box Reflectance Transmittance Replace button Page 5 of 80

6 Clean button Close button Surface display colours dialogue box Toolbars Dialogue Box Toolbar List OK Button About FlucsPro Dialogue Box Threshold Table Dialogue Box Select Colour Set Dialogue Box IES HTML Viewer Model Viewer Model dialogue bar Key-in Prompt area Worked Example Designing the Layout Using the Design Command Analysing the Layout Using the Analysis Command Version History Version Version Version Version Version Version Version Version Version Version Before Version Page 6 of 80

7 1. Introduction to FlucsPro FlucsPro is a special view available in VE for performing lighting design and analysis calculations using CIBSE methods. The menus and toolbars for this view provide tools for performing FlucsPro calculations. Another view, LightPro, is available for placing light fittings within the context of the building model and for maintaining the lighting database Calculations The program can perform lighting design and analysis: Design - lumen and glare design calculations based on the CIBSE Code for Interior Lighting 1994, CIBSE TM and CIBSE TM This results in a light-fitting layout for each room. Analysis - analysis of both electric lighting and day lighting using the point-by-point method. The starting point for this would usually be light fittings placed by the user using LightPro or automatically placed as a result of the FlucsPro design calculations. Both design and analysis can be performed in single-room mode or in multiroom mode (useful if you have many similar rooms). The light-fitting layouts designed here or placed using LightPro can also be used in Radiance to perform sophisticated day lighting and/or artificial lighting simulations. Page 7 of 80

8 2. Menus 2.1. File Menu The File menu handles file operations. Note that there are no options for opening FlucsPro project files - this is because the FlucsPro project file always has the same name as the ModelIT file but with a *.flp extension. All you need to do is open the correct ModelIT file, and the FlucsPro project file is opened automatically Save This option is the same as in ModelIT, but note that whenever ModelIT saves a model file, it also saves the FlucsPro project file and any other application s project file. Attach DXF File Detach DXF File Active DXF Layers Print Print Setup All these options are the same as in ModelIT Copy Bitmap This is available unless in surface mode at body level. Copies the currently selected viewpane to the clipboard. Use this to copy and paste the contour diagrams to a report, e.g. a Microsoft Word document Save Bitmap This is available unless in surface mode at body level. Saves the currently selected viewpane to a bitmap file. A standard Save As dialogue box will open, allowing you to select a bitmap filename. Use this to keep a copy of the contour diagrams on file. Page 8 of 80

9 Recently Used File List Open the most recently opened ModelIT files Edit menu The edit menu handles some of the space properties and the FlucsPro calculations Undo Redo Undoes the last change to the model. This applies to changes to light fittings, room attributes, and surface reflectances and transmittances. It does not affect changes to the FlucsPro surfaces, which are stored in the separate FlucsPro project file. Redoes the last change to the model. See the comments above for Undo Selection Set This is only available when one or more rooms are selected. Displays a sub-menu allowing operations on the selected rooms in the model: Selection Set Sub-menu Custom Attributes Displays the Custom attributes dialogue box, allowing you to edit the attributes for all the selected rooms Assign Template Displays the Assign template dialogue box, allowing you to assign the attributes for all the selected rooms to the values held in a template. Page 9 of 80

10 Assign surface types Allows you to assign surface reflectances and transmittances for the selected surfaces Query Model This is only available when a surface or opening is selected. Shows the property sheet for the selected item in the model. This may be a Surface properties dialogue box, or an Opening properties dialogue box, depending on what item was selected Add Working Plane This is only available at body level and Illumination mode in plan view. You will be prompted to enter a point in the plane to be created. When you have done this, the Create working plane dialogue box will be displayed, allowing you to create a named working plane, with an elevation and azimuth, and bounded by the room s inner surface. This working plane will then be used in subsequent analysis calculations Delete Working Plane This is only available when one or more working planes are selected. Deletes the currently selected working planes Add Task Area This is only available at surface level. You will be prompted to enter all the points defining the task area, and to right-click to finish entering points. When you have done this, the Create task area dialogue box will be displayed, allowing you to create a named task area within the currently selected room surface or working plane. This task area will then be used in subsequent analysis calculations Delete Task Area This is only available when one or more task areas are selected. Deletes the currently selected task areas Design This is only available when one or more rooms are selected. Displays the Design dialogue box to perform the Lumen and Glare design calculation. The calculation has two modes: 1. Single-room mode only one room is selected. 2. Multi-room mode more than one room is selected Analysis This is only available when one or more rooms are selected. Displays the Analysis dialogue box to perform the point-by-point analysis calculation. The calculation has two modes: 1. Single-room mode only one room is selected. 2. Multi-room mode more than one room is selected. Page 10 of 80

11 Clear Analysis Results This will clear all the analysis results for the selected rooms. Page 11 of 80

12 2.3. View Menu The View menu handles display control operations Flucs Bar Toggles the display of the Flucs dialogue bar at the base of the screen. This contains most of the settings required for the Design calculations Toolbars Allows you to select which toolbars are displayed. The Toolbars dialogue box appears, showing the available tool bars. Click the items in the list to add or remove the tick symbol, and press OK Viewports The Viewports sub-menu handles the division of the view area into one, two or four viewports. Page 12 of 80

13 Viewports Sub-menu Rotation All these options are the same as in ModelIT. The Rotation sub-menu allows you to switch the selected view port between the standard views Rotation Sub-menu All these options are the same as in ModelIT Zoom The Zoom sub-menu allows you to set the zoom level of the selected view port Zoom Sub-menu All these options are the same as in ModelIT Colour The Colour sub-menu handles colour settings Colour Sub-menu Refresh Both these options are the same as in ModelIT. As in ModelIT. (Tip: Use the Esc key to abort a slow refresh, e.g. when filled contours are being displayed). Page 13 of 80

14 Luminaires This is available unless in surface mode at body level. Toggles on or off the display of luminaires Luminaire numbers This is available unless in surface mode at body level. Toggles on or off the display of luminaire index numbers, i.e. the same order as in the list for the room in LightPro Luminaire photometric webs This is available unless in surface mode at body level. Toggles on or off the display of luminaire photometric webs the 3d representation of the luminaire s photometric data. This is useful for checking that luminaires have been rotated correctly, e.g. for spot lighting or flood lighting Illuminance This is available unless in surface mode at body level. Displays the calculated illuminance (lux or fc) on the surfaces Luminance This is available unless in surface mode at body level. Displays luminance (cd/m 2 or cd/ft 2 ) derived from the calculated illuminance and the surface reflectances (this option is disabled if daylight factors are being displayed) No Lighting This is available unless in surface mode at body level. Turns off all the displays of calculated surface lighting levels Artificial lighting This is available unless in surface mode at body level. Displays calculated surface artificial lighting levels Day Lighting This is available unless in surface mode at body level. Displays calculated surface day lighting levels Daylight Factor This is available unless in surface mode at body level. Displays calculated surface daylight factors Combined Lighting This is available unless in surface mode at body level. Displays total combined surface lighting levels, i.e. calculated artificial lighting levels + calculated day lighting levels. Page 14 of 80

15 Contour Levels This is available unless in surface mode at body level. Displays surface lighting levels using a false colour contour plot Filled Contour Levels This is available unless in surface mode at body level. Displays surface lighting levels using a filled false colour contour plot Grey Shading This is available unless in surface mode at body level. Toggles on or off the display of luminaires Filled Threshold Contour This is available when illuminance (rather than luminance) is being displayed. It displays the Daylight Threshold dialogue box, which allows you to set a threshold contour for daylight factor above (or below) which the area will be filled and calculated Threshold Table This displays a table of threshold values and the area of the room where the threshold is achieved, for each room. A setting in the Preferences dialogue box allows you to set this to display a table suitable for LEED NC 2.2 credit Include 0 This is available unless in surface mode at body level. Toggles on or off whether the scale starts at zero or at the minimum value for all the selected surfaces Select Colour Set Displays the Select colour set dialogue box, allowing you to choose from a number of different false colour schemes for the contour levels Results Opens the IES HTML Viewer to display the most recently calculated results (both Design and Analysis) for the selected room (when below model level) or for all rooms (when at model level) Save Results Opens a standard Save As dialogue box to save the results. The results are stored in HTML format and may be viewed in any web browser. However, only the results for all rooms are stored permanently. Results for individual rooms are only stored temporarily so that they may be displayed during a session. So you may need to use this option if you wish to save the results for all rooms but with a different name or path, or to save the results for an individual room. Page 15 of 80

16 2.4. Settings Menu The Settings menu handles grid and lock settings, and user preferences Grid Locks Options the same as in ModelIT. Options the same as in ModelIT Preferences This displays the Preferences dialogue box that allows you to change your preference for the style of the Analysis dialogue box and the amount of detail in the results Location This tool displays the APLocate dialogue box where you can set the building location. The only items of importance for the lighting calculations are the latitude, longitude (required if you will be using the CIE Clear Sky daylight model) and ground reflectance (required if you set a ground plane) Site Orientation This displays the Site Orientation dialogue box that allows you to specify the direction of North by default this is along the positive x-axis. This is required if you will be using the CIE Clear Sky daylight model Help Menu The Help menu gives access to the help information Help Topics Displays this help file About FlucsPro Displays the About FlucsPro dialogue box. This is where you can find the exact Page 16 of 80

17 version number. Page 17 of 80

18 3. Toolbars 3.1. Model Toolbar This appears at the top of the view. All of the buttons have equivalent menu options. Save see File->Save Undo see Edit->Undo Redo see Edit->Redo Locks see Settings->Locks Select - Allows you to use the mouse to select a space (at model level), a surface (at body level in surface mode) or an opening (at surface level). Custom attributes see Edit->Selection Set->Custom Attributes Assign Template see Edit->Selection Set->Assign Template Assign surface types see Edit->Assign surface types Query model see Edit->Query model Add working plane see Edit->Add working plane Delete working plane see Edit->Delete working plane Add task area see Edit->Add task area Delete task area see Edit->Delete task area Design see Edit->Design Analysis see Edit->Analysis Clear analysis results see Edit-> Clear analysis results Luminaires see View->Luminaires Luminaire numbers see View->Luminaire numbers Page 18 of 80

19 3.2. View Toolbar Luminaire photometric webs see View->Luminaire photometric webs Illuminance see View->Illuminance Luminance see View->Luminance No lighting see View->No lighting Artificial lighting see View->Artificial lighting Day lighting see View->Day lighting Daylight factor see View->Daylight factor Combined lighting see View->Combined lighting Contour levels see View->Contour levels Filled contour levels see View->Filled contour levels Grey shading see View->Grey shading Filled threshold contour see View->Filled threshold contour Threshold table see View-> Threshold table Include 0 see View->Include 0 Select colour set see View->Select colour set Copy Bitmap see File->Copy Bitmap Save Bitmap see File->Save Bitmap Results see View->Results Save results see View->Save results Refresh see View->Refresh Model Viewer shows the Model Viewer. Help see Help->Help Topics Page 19 of 80

20 This appears at the bottom of the view. All the buttons and controls are the same as in ModelIT. Note that there are two modes at body level, Surface and Illumination. Page 20 of 80

21 4. Dialogue Boxes 4.1. Preferences Dialogue Box This dialogue box is displayed when you select Preferences on the Settings menu. Analysis dialogue box - select a style for the Analysis dialogue box this may be displayed in one of 3 styles a dialogue box with all the items on one page, a property sheet with 6 pages, or a wizard with 6 pages (equivalent to those on the property sheet). The wizard may be simpler to use for beginners but requires more mouse clicks. The dialogue box is quicker for experienced users. Results display - select the sections you want in the analysis results. Daylight threshold table select whether you wish to display a general purpose table of threshold areas or one suitable for LEED NC 2.2 Credit 8.1. Page 21 of 80

22 4.2. Design Dialogue Box This dialogue box allows you to perform a lumen and glare design. The dialogue box is different depending on how many rooms were selected when the calculation was requested. It has three pages in single-room mode, when only one room is selected: Design parameters page Room page Constraints page It has two pages in multi-room mode, when more than one room is selected. The data for the missing pages is different for each room, so the calculation uses each room s attributes without allowing any further editing: Constraints page Preferred orientation page OK Button Press this to start the calculations. What follows depends on the calculation mode: After a single-room mode calculation only, the Design results dialogue box will be displayed so that you may select one of the possible layouts. After a multi-room mode calculation the Design results viewer is displayed immediately, without showing the Design results dialogue box, because the calculation has selected one of the possible layouts for you automatically Cancel Button Press this to abandon the calculations. Page 22 of 80

23 Design Parameters Page This page is only shown in single-room mode. It allows you to confirm the design criteria for the FlucsPro design calculations. Most of this data is derived from the room geometry or from data entered already elsewhere in FlucsPro or LightPro, so should only be changed for a good reason Room Surface Maintenance Factor The room surface maintenance factor is the proportion of the illuminance provided by the lighting installation in a room after a set time compared with that which occurred when the room was clean. Typical room surface maintenance factors are shown in the CIBSE Code for Interior Lighting, 1994, Table Lamp Survival Factor Combo Box This allows you to select the lamp survival factor for the room. Page 23 of 80

24 Enter Lamp Survival Factor as a Lamp Replacement Period? Select this to specify the lamp survival factor as a lamp replacement period. The actual value will then be looked up from the LSF curve for the selected lamp colour Lamp Replacement Period for Lamp Survival Factor Lookup Specify a lamp replacement period for looking up the lamp survival factor from the LSF curve. Note that the lamp replacement period you enter here and for the lamp-lumen maintenance factor should match Luminaire Maintenance Factor Combo The lumen output from a luminaire decreases with time because of dirt deposition on and in the luminaire. The luminaire-maintenance factor quantifies this decline, being a proportion of the initial light output from the luminaire that occurs after a set time, allowance having been made for the decline in light output from the lamp. Typical luminaire maintenance factors are shown in the CIBSE Code for Interior Lighting, 1994, Table Lamp Lumen Maintenance Factor Combo Box This allows you to select the lamp lumen maintenance factor for the lamps in the room Enter Lamp Lumen Maintenance Factor as a Lamp Replacement Period? Select this option if you wish to specify the lamp lumen maintenance factor as a lamp replacement period. The actual value will then be looked up from the LLMF curve for the selected lamp colour Lamp Replacement Period for Lamp Lumen Maintenance Factor Lookup Specify a lamp replacement period for looking up the lamp lumen maintenance factor from the LLMF curve. Note that the lamp replacement period you enter here and for the lamp survival factor should match Design Illuminance Combo Select the required illuminance level in lux on the working plane from the typical values or enter your own value Design Limiting Glare Index Combo Select the required limiting glare index from the typical values or enter your own value. If 0 is selected or entered the program will not perform a glare check Select Light Fitting Button Use this button to select a luminaire, lamp and lamp colour for the light fitting. The Select light fitting dialogue box will be displayed. (See FlucsLDB.doc) Luminaire Shows the selected luminaire Lamp Shows the selected lamp. Page 24 of 80

25 Lamp Colour Shows the selected lamp colour Room Page This page is only shown in single-room mode. It allows you to confirm the room details for the FlucsPro design calculations. Most of this data is derived from the room geometry or from data entered already elsewhere in FlucsPro, so should only be changed for a good reason Room Title The title of the room, obtained from the room name Room Length The maximum length of the room in metres, obtained by enclosing the room in a bounding rectangular room aligned with the axes. Page 25 of 80

26 Room Width The maximum width of the room in metres, obtained by enclosing the room in a bounding rectangular prism aligned with the axes Room Height The maximum height of the room in metres, obtained by enclosing the room in a bounding rectangular prism aligned with the axes Working Surface Height Enter the height of the working surface in metres. This is an imaginary horizontal plane with a required average illuminance to be achieved by the selection of suitable lighting layouts in the design calculation Luminaire Mounting Height The height of the luminaire mounting in metres above the floor of the bounding rectangular room Reflectances The surface-reflectance value of a surface is the ratio of the luminous flux reflected from the surface to the luminous flux incident upon it. The program will use these values to calculate the ceiling, wall and floor- void reflectances. See CIBSE Code for Interior Lighting 1994, Tables 5.8 and 5.9, for typical reflectances Ceiling Reflectance Combo The ceiling reflectance is obtained by averaging the reflectances of all surfaces whose normal is approximately vertically downwards Wall 1 Reflectance Combo The wall 1 reflectance is obtained by averaging the reflectances of all surfaces whose normal is approximately along the positive y-axis Wall 2 Reflectance Combo The wall 2 reflectance is obtained by averaging the reflectances of all surfaces whose normal is approximately along the positive x-axis Wall 3 Reflectance Combo The wall 3 reflectance is obtained by averaging the reflectances of all surfaces whose normal is approximately along the negative y-axis Wall 4 Reflectance Combo The wall 4 reflectance is obtained by averaging the reflectances of all surfaces whose normal is approximately along the negative x-axis Floor Reflectance Combo The floor reflectance is obtained by averaging the reflectances of all surfaces whose normal is approximately vertically upwards. Page 26 of 80

27 Constraints Page Ceiling Grid Snap Combo This page is shown in both single-room and multi-room modes. It allows you to select how the light fittings being designed will snap to the ceiling grid. They may be snapped to the nearest ceiling tile intersection, snapped to the nearest ceiling tile centre, or not snapped at all. If you wish to constrain the light fittings to a ceiling grid, it is best to use this combo and none of the further constraints below No Constraints Option Select this option to leave the design calculation free to select the best layout (in other words, you are not constraining the design layout in terms of offsets and spacings or numbers). The only constraint remaining is the snap to the ceiling grid selected in the Ceiling grid snap combo above Specify in Length Check Button Select this option to constrain offsets and spacings, or numbers, along the x-axis of the Page 27 of 80

28 bounding rectangle Specify in Width Check Button Select this option to constrain offsets and spacings, or numbers, along the y-axis of the bounding rectangle Offsets and Spacings Option Select this option to constrain the design layout in terms of luminaire offsets and spacings in the length or width or both. You must then use the length and width check buttons to select whether to set the offsets and spacings in the length, width, or both; and you must then enter the relevant offsets and spacings: Offset in Length - Specify the offset of the first light fitting from the bounding rectangle's minimum x value. Offset in Width - Specify the offset of the first light fitting from the bounding rectangle's minimum y value. Spacing in Length - Specify the spacings between light fittings along the x-axis. Spacing in Width - Specify the spacing between light fittings along the y-axis Numbers Option Select this option to constrain the design layout in terms of numbers of luminaires in the length or width or both. You must then use the length and width check buttons to select whether to set the numbers in the length, width, or both; and you must then enter the relevant numbers: Number in Length - Specify the number of light fittings along the x-axis. Number in Width - Specify the number of light fittings along the y-axis Clear Existing Fittings Turn this on to clear any existing fittings before applying the new layout Clear Existing Fittings Even if Design Fails Turn this on to clear any existing fittings anyway, even if the design does not proceed due to failure to select a satisfactory solution or due to the user cancelling the operation. Page 28 of 80

29 Preferred Orientation Page This page is only shown in multi-room mode. It allows you to select which of the luminaire orientations (parallel or across) to prefer when making the automatic selection in multi-room mode. This only applies when the luminaire is not a point source Preferred Orientation Combo Select Don t care, Parallel or Across. Page 29 of 80

30 4.3. Design Results Dialogue Box This dialogue box shows the results of the design calculation. The design calculation works out the ideal number of luminaires to meet the illuminance level criterion. It then works out the numbers of luminaires along the x and y-axes, subject to the constraints that may have been imposed by the offsets and spacings or numbers settings. Up to 4 layouts are tried by varying each number by 1 if the constraints allow that. If the luminaire is linear, the number of layouts is doubled to account for parallel or across orientations. The glare, spacing/height and other criteria are applied to each layout, and the list of layouts is populated. Any layout with problems has a "cross" symbol displayed next to it and the reasons are given in the "Reasons for failure" column. Each solution is checked against the following criteria: Illumination is between 80% and 150% of design illumination Maximum corrected-glare index is less than the limiting-glare index The luminaires will fit into the room The spacing between the luminaires does not exceed the maximum spacing-to-height ratio The offset from the wall to the first luminaire does not exceed half the maximum spacing-to-height ratio Solutions List Lists the actual attempted solutions, with a tick for success, or a cross and reasons for failure. Select one of these solutions (even a failed one) by clicking and pressing OK or double-clicking to close the dialogue box and pass the selected layout back to the model. Page 30 of 80

31 OK Button Press this to close the dialogue box, accepting the currently selected solution. If you select a solution with a cross next to it you will get a warning like the one displayed below, but you may continue if you wish: Cancel Button Press this to abandon the calculations. Once a solution is selected you will be shown the Design results viewer. Page 31 of 80

32 4.4. Design Results Viewer This uses the IES HTML Viewer to show you a summary of the FlucsPro design calculations. Once again the results are displayed differently depending on the calculation mode: In single-room mode, the results look like this: The input data is shown, followed by a table of all the layouts tried, and an indication of which layout was selected. We need to scroll down to see the remaining text Page 32 of 80

33 In multi-room mode, the results show all selected rooms and give an extra summary table at the top so that you can see which rooms succeeded: Page 33 of 80

34 After this dialogue box is closed, the room is populated with the selected layout. NB Existing light fittings will be removed if that option was selected. The updated room layout is then displayed in the view. In the example shown below, please note that the design calculation was performed with a design illuminance of 500 lux, which is different from that used above (1000 lux) for the purpose of showing failed layouts in the list of solutions: Page 34 of 80

35 Page 35 of 80

36 4.5. Analysis Dialogue Box The Analysis dialogue box allows you to run an analysis calculation. It may take one of two styles, depending on the preference you have set using the Settings > Analysis option. The first style (default) is a single-page dialogue box as shown here: The second style is a property sheet that has 6 pages: The Illuminance page The Margin page The Calculation quality page The Artificial lighting page The Day lighting page The False ceiling page The third style is a wizard with exactly the same pages as the property sheet. We shall only discuss the third style here. The items on the single page dialogue box and the property sheet are exactly the same, apart from the buttons at the bottom. Page 36 of 80

37 You may specify various calculation settings, including the sizes of the calculation grids, whether to calculate artificial or day lighting or both, whether to check for obstructions, whether to include component surfaces as reflecting or obstructing components, and inter-reflection calculation method. Note be careful how much detail you request - the calculations can be very slow if you select a fine grid, especially if you are checking for obstructions or performing a full inter-reflection calculation. When you enter data an estimate is made of memory and time required. A warning is given if either of these gets large. As a rule of thumb, perform your initial calculations with fairly coarse grids, e.g. 0.25m for working surfaces and 0.5m for all others, being the maximum coarseness allowed for CIBSE uniformity and diversity calculation purposes. The program allows you to create working surfaces or task areas. However, a default horizontal working surface is always automatically created at the specified working surface height, and bounded by a boundary polygon inset 0.5m from the cross section of the room when cut by the plane. A task area is created at the geometric centre of this default working plane. (A later version may allow you, after the calculations, to examine any sub-area of a working plane as if it were a task area.) Back Button Press this to go back to the previous page in the Wizard Next Button Press this to go forward to the next page in the Wizard Finish Button Press this to start the calculations. The Progress dialogue box will now display, where the calculation may be monitored (in multi-room mode, the Progress dialogue box is displayed for each room in turn) Cancel Button Press this to abandon the calculations. Page 37 of 80

38 Illuminance Page Illuminance Type Specify the type of illuminance to calculate for working planes and task areas. Note all other surfaces always use Planar illuminance: Planar ( horizontal ). This is the simple illuminance on the receiving plane. Usually this is a horizontal plane, hence the term horizontal. Perpendicular ( vertical ). This is the illuminance on a plane passing through the point and perpendicular to the receiving plane. Typically the latter is a horizontal plane, hence the term vertical. It is used mainly for environments where there are many vertical surfaces to be illuminated, mostly facing in the same direction, e.g. a control room with many display terminals. Cylindrical. This is the average illuminance over the surface of a cylinder whose axis passes through the point and is perpendicular to the receiving plane. Effectively this means that only the component of the incidence angle parallel to the cylinder axis is taken into account. Semi-cylindrical. Similar to cylindrical illuminance, but the cylinder is cut in half by a plane parallel to its axis. This means it is treated in the same way as cylindrical illuminance, except that there is a cut-off when the component of the incidence angle perpendicular to the cylinder axis exceeds +/- 90 degrees. Scalar. This is the average illuminance over the surface of a sphere. Page 38 of 80

39 Margin Page Working Surface Margin Enter the margin to be left uncalculated at the edges of working surfaces. Because the grid size is constant, the calculations will be inaccurate when the working surface is close to a room surface. The CIBSE-recommended margin is 0.5m Calculation Quality Page Quality slider Use this to select from a number of predetermined quality settings. The text below will change as you move the slider to give you more detail about the quality setting. Please use this to confirm whether the quality you have chosen will be adequate for the purpose. If in doubt, use the Advanced button to set the quality at a higher level of detail. Page 39 of 80

40 Advanced button This will show the Advanced Quality Settings dialogue box, where you can set the calculation quality at a higher level of detail Include room components toggle button Select this if you have placed components in the room, and you need these to be taken into account in the lighting calculations Include a ground plane toggle button Select this if you wish a ground plane to be included in the calculation. This is a notional ground plane created at z=0 around the building. Include it if you wish to determine whether any extra light may be available due to reflections off the ground. NB the reflectance is assumed to be 10%. Also this is only meaningful if you are using full inter-reflection calculations Artificial Lighting Page This page is only available when the room contains luminaires or a multi-room calculation is being performed Calculate Artificial Lighting Toggle Button Select this to calculate artificial lighting from all the light fittings within the room Divide Large Luminaires into Smaller Light Sources Toggle Button If you turn this on then luminaires that are larger than Grid size 1 will be represented by a grid of points each having the same polar curve as the entire luminaire. This will give more accurate results for linear and area source luminaires, but it will also increase calculation times. Page 40 of 80

41 Day Lighting Page This page is only available when the room contains windows or a multi-room calculation is being performed Calculate Day Lighting Toggle Button Select this to calculate day lighting from all the external openings within the room. External reflections, including ground reflectance, or external obstructions, may be included if you select the correct quality settings Calculate for LEED NC 2.2 Credit 8.1 Toggle Button This is only available when you have selected to create threshold tables for LEED NC 2.2 Credit 8.1 in the Preferences. Select this to force all the settings to the correct ones for a calculation suitable for checking LEED NC 2.2 Credit 8.1. This forces the sky model to CIE Clear Sky, the date and time to 21 March at 12:00, the calculation grid size to 2 ft (or its metric equivalent), and the threshold to 25 ft-candles (or its metric equivalent) Sky model Select the sky model to use - the CIE Standard Overcast Sky, the Uniform overcast sky, or the CIE Clear sky. The first two are defined as functions of the value of Zenith Luminance, Lz, entered below. The last one does not need these values instead it is a function of latitude, longitude, date and time. The latitude and longitude may be set in the Settings- >Location menu option. The date and time must be selected below Zenith Luminance Enter the zenith luminance Lz of the sky model. The luminance Lγ,a at elevation γ and azimuth a is given by: For the CIE Standard Overcast Sky: Lγ,a = Lz (1 + 2 sin(γ))/3 For the Uniform Overcast Sky: Lγ,a = Lz The next field will be calculated automatically if you enter a value here. Page 41 of 80

42 Equivalent Illuminance on the Horizontal Plane Enter the equivalent unobstructed illuminance that is required on the horizontal plane. The above field will be calculated automatically if you enter a value here. You may use this option, for example, if you wish to do a direct comparison with a Radiance calculation using the 10k CIE Standard Overcast Sky Date and time This is needed if you select the CIE Clear Sky model. Select the date either by selecting the day or month text and entering the text or using the spin buttons. You can also click on the down arrow to use the calendar control: This allows you to select a day of the month or scroll to other months using the arrows. Select the time by selecting the hour or minute text and entering the text or using the spin buttons False Ceiling Page Create a False Ceiling Toggle Button The person who created the building model may have already added the false (i.e. suspended) ceiling if it exists in this room. There are two main ways in which this could have been done: Page 42 of 80

43 By assigning, to the ceiling surface, a construction that includes the concrete slab (or whatever), the ceiling void and the suspended ceiling tiles. By modelling the ceiling void as a separate space. (This choice was probably made on thermal grounds.) If this is the case, DO NOT tick this button. A surface, representing the real underside surface of the ceiling tiles, will be automatically created for use in the Analysis calculation anyway. However, if the false ceiling was not added (e.g. the material may be thermally insubstantial), tick this button. Then an extra surface, representing the underside of the ceiling tiles, will be created for use in the Analysis calculation Use the Mounting Plane Height Toggle Button Turn this on if you wish to create the false ceiling at a height determined by the mounting plane height that is currently in effect for the room. This is recommended if you are doing a multi-room analysis, because otherwise you would have to enter a single value below which would be applied to all the rooms, which would (usually) not be realistic Height of False Ceiling Above the Floor Enter a number here only if you did not tick the box above. The number entered here will determine the height within the room of this extra surface Reflectance The number entered or selected here will determine the reflectance of this extra surface Advanced quality settings Dialogue Box This has two pages, the Surfaces page and the Reflections page Surfaces page Page 43 of 80

44 Receive and reflect light Toggle Buttons Select the surfaces that you wish to be included in the calculation as surfaces that receive light and can therefore also be included in the inter-reflection calculations Obstruct light Toggle Buttons Select the surfaces that you wish to be included in the calculation as surfaces that obstruct light and can therefore contribute to shading Internal room surfaces These are the internal surfaces of the room being calculated. They always receive light (so the Receive light button is always on and disabled). For a room where the internal surfaces are concave, e.g. inner partitions or parts of an L-shaped room, it may also be important to turn on the Obstruct light button. In the room for which the calculation is being carried out (the subject room), daylight only enters via windows and holes, whether or not this check box is set. This is mainly for efficiency reasons, but effectively it means that the wall containing the window or hole is always treated as an obstructing surface for day light entering via that window or hole. So, unless other rooms are to be included in the calculation, the only reason for setting this check box would be to take account of extra obstructing surfaces, e.g. in an L-shaped room. However, in other rooms, if they are included in the calculation, internal room surfaces are treated as obstructing surfaces only if this check box is set. So, if other rooms are included in the calculation, and there is a chance that light from internal surfaces of those rooms may contribute by inter-reflection to the subject room, this check box should be set Component surfaces These are the surfaces of components that have been placed within the room. Note that it is possible to place components within a room and then move them outside. Turn the relevant buttons on if room component surfaces are to be included as sources of reflected light or as obstructions to light. Both these buttons will increase the calculation times. If the Reflect light button is turned on, the surfaces will also be included in the illumination calculations, and the illumination levels can therefore be viewed after the calculation. NB only components with less than 10 constituent bodies will be used External room surfaces These are the external surfaces of the room being calculated. One reason for turning on the Obstruct light button may be to take into account the extra obstruction due to deep window recesses Surfaces from other rooms These are the internal and external surfaces of other rooms, apart from the room being calculated. One reason for turning on the buttons may be to take into account reflections or shading due to nearby rooms Surfaces from obstructions file These are the internal and external surfaces of rooms in any attached obstructions file. One reason for turning on the buttons may be to take into account shading due to nearby buildings, e.g. in a right-to-light analysis. Page 44 of 80

45 Ground plane This is a notional ground plane created at z=0 around the building. Include it if you wish to determine whether any extra light may be available due to reflections off the ground. There is no Obstruct light button. NB the reflectance is assumed to be 10%. Also this is only meaningful if you are using full inter-reflection calculations Grid Size 1 for Working Planes, Task Areas and Luminaires Enter the grid size in metres for the working surfaces and task areas. This will also be applied to luminaires if they are to be divided up into smaller light sources. NB a smaller grid size will be used if necessary for small surface areas Grid Size 2 for Internal Room Surfaces and Component Surfaces Enter the grid size in metres for all other surfaces within the room apart from working surfaces and task areas. This would normally be larger than the first grid size. NB a smaller grid size will be used if necessary for small surface areas Grid Size 3 for External Surfaces Enter the grid size in metres for all surfaces outside the room. This would normally be larger than the other two grid sizes. NB a smaller grid size will be used if necessary for small surface areas Reflections Page Calculation Method Combo Select the type of inter-reflectance calculation required: No inter-reflections no inter-reflection calculation will be performed. Average inter-reflections the average illuminance on all the surfaces in the room is reflected infinitely using the average area-weighted surface reflectance and this reflected light is assumed to be reflected evenly to all the surfaces in the room. If the average surface reflectance is R and the average initial illuminance on the surfaces is I, Page 45 of 80

46 the infinite series of reflections of I is given by I (R + R 2 + R3 +...) which simplifies to I R/(1-R). Full inter-reflections (progressive radiosity). This option progressively takes the surface patch, whose as-yet unreflected flux is largest, reflects this flux to all the other room surfaces, notes it as now having been reflected, and repeats this process until there are no patches with unreflected flux above a minimum value or until the maximum number of reflections has been performed. The value of the largest remaining unreflected flux, and the number of shoots, are displayed in the progress dialogue box so that you can monitor the convergence of the calculation. The display of illuminance levels in the view is updated after every 50 reflections. You may interrupt or cancel the calculation at any stage, e.g. when you feel the calculation has begun to converge. If this option is selected, you must enter values in the next two boxes also Minimum Patch Flux for Reflection Enter the minimum value of unreflected flux for a surface patch to be used as a source of reflections in the progressive radiosity calculation. The calculation will be limited by this minimum flux, by the maximum number of reflections entered below, and by any interruption you make using the Cancel button on the Progress dialogue box Maximum Number of Reflections Enter the maximum number of reflections to be used in the progressive radiosity calculation. The calculation will be limited by this maximum number of reflections, by the minimum flux entered above, and by any interruption you make using the Cancel button on the Progress dialogue box Progress Dialogue Box This dialogue box shows you the progress of the analysis calculations. The text displays information about the current calculation phase, while the progress bar and the text below display the percentage progress. You may press the Cancel button at any time - if so you will be asked if you really wish to cancel. The screen will be updated periodically to show the latest results. This can be useful when you are performing the full progressive radiosity inter-reflection calculation Progress Caption This text tells you what phase of the calculations is currently being performed. Page 46 of 80

47 Progress Status This gives extra information about the part of the calculations currently being performed Progress Bar This gives a visual indication of progress during the calculations Progress Percent This gives the percentage progress during the calculations Cancel Button Press this to abandon the calculations. When the calculation finishes, the results are shown in the Analysis results viewer Daylight Threshold Dialogue Box This is only available when you are displaying illuminance. It allows you to set a threshold (for daylight factor or illuminance, depending on the display setting), which will then be displayed as a contour. The region where the daylight factor is above or below the contour will be shaded, depending on whether you wish to invert the shading. The threshold value and the area of the shaded region are also reported in the analysis results and in the viewport Page 47 of 80

48 when at surface level only Value Enter the value of the daylight factor threshold in percent, or illuminance Invert Button Turn this on to shade the area where the daylight factor is below the threshold, or off to shade the area where it is above the threshold. The following diagram shows the effect of turning this button on: Apply Button Press this to update the display with the current dialogue box settings Polyline Button Press this to create a DXF export of the threshold contour line. Not available at present Close Button Press this to close the dialogue box. Page 48 of 80

49 4.9. Analysis Results Viewer This uses the IES HTML Viewer to show you a summary of the FlucsPro analysis calculations. Once again the results are displayed differently depending on the calculation mode and the results preferences: In single-room mode, the results look like this (the first page only of the display is shown): Depending on the results preferences, a brief illumination data summary is given, just for each working plane and floor in the room. Then the input data is given, with the analysis requirements. The artificial lighting, day lighting and inter-reflection calculations are summarised. Then an illumination data summary is given for all the illuminated room surfaces, component surfaces Page 49 of 80

50 and working planes, followed by the luminous efficacy for each working plane, and finally the detailed point-by-point results for each working plane and task area. In multi-room mode, the results show all selected rooms and give an extra room summary table at the top so that you can see which rooms succeeded: After the calculations, the levels for the selected surfaces (room surfaces, component surfaces, working planes and task areas) are shown in the view. At body level the Surface browser allows you to select different surfaces using the Page 50 of 80

51 tick boxes. Surfaces may also be selected by clicking within their borders and if you use the Ctrl key when clicking the existing selected surfaces are retained and surfaces whose borders enclose the point are selected cyclically. Use the various options for changing the display. The following pictures show the effect of selecting different surfaces, changing contour styles and turning off the display of luminaires: Page 51 of 80

52 4.10. Calculation Cleanup Dialogue Box This is displayed when you cancel an analysis calculation. It gives you the option of retaining the results calculated so far, reverting to the previous results (default), or clearing the results completely. Page 52 of 80

53 4.11. Surface Browser At body level and in Illumination mode, the normal model browser is replaced by this Surface browser. It is also displayed but disabled at Surface level. It shows all the illuminated surfaces after a successful Analysis calculation. This includes the default working plane and task area, any other working planes and task areas that you have added, all the internal room surfaces, and other surfaces if the relevant options for reflections were used (component surfaces, external room surfaces, other rooms, obstructions file rooms, ground plane). Page 53 of 80

54 You may select any one or more of the illuminated surfaces using the tick boxes. This is sometimes easier than trying to select the surfaces using the mouse, because where surfaces are overlapped in the view it is sometimes necessary to use the Ctrl button and a sequence of mouse clicks to cycle through the surfaces until the ones you wanted are selected. Tick boxes may be turned on and off by clicking individual boxes or by clicking the boxes for the parent categories such as Internal surfaces. The selected item may also be ticked on or off by pressing the space-bar on the keyboard. When only one surface is selected you may go down to surface level and view the individual surface Flucs Dialogue Bar This may be displayed at the bottom of the screen if it has been turned on using the View menu. It contains general settings for the selected room, used mainly for the design calculations. It has two pages: 1. General page 2. Lighting page General Page This displays read-only information derived from the selected room, a key-in box, and a prompt area Room Name Displays the name that was assigned to this room Room ID Displays the unique ID that was automatically generated for this room Floor Area Displays the floor area of this room, calculated by the program Volume Displays the volume of this room, calculated by the program. Page 54 of 80

55 Room Lighting Template Displays the name of the lighting template that is currently assigned to this room. Templates are edited in the Template Manager and may be assigned when placing a room and reassigned using the Edit > Selection set > Assign Template tool Lighting Page This allows you to examine or over-ride the default values taken from the template for this room. These values are mainly used in the Design calculation Default Check Boxes These check boxes apply to the associated item (to the right of the check box). Toggle these on to set the associated item to the default value from the template assigned to this room. Turn off to override the default value the associated item will now be enabled allowing you to change the value Design Illuminance Enter the required illuminance level in lux on the working plane Design Limiting Glare Index Enter the required limiting glare index. If 0 is entered the program will not perform a glare check Working Surface Height Enter the height of the working surface in metres. This is an imaginary horizontal plane with a required average illuminance that is to be achieved by the selection of suitable lighting layouts in the design calculation. It is also used in the analysis calculation when creating the default working plane Room Surface Maintenance Factor The room-surface maintenance factor is the proportion of the illuminance provided by the lighting installation in a room after a set time compared with that which occurred when the room was clean. Typical room surface maintenance factors are shown in the CIBSE Code for Interior Lighting, 1994, Table 4.7. It is also used in the analysis calculations (during the average or full inter-reflection calculations) Lamp Survival Factor Combo Box Allows you to select the lamp survival factor for the room Enter Lamp Survival Factor as a Lamp Replacement Period? Select this to specify the lamp survival factor as a lamp replacement period. The actual Page 55 of 80

56 value will then be looked up from the LSF curve for the selected lamp colour. Note that the lamp replacement period you enter here and for the lamp-lumen maintenance factor should match Lamp Replacement Period for Lamp Survival Factor Lookup Specify a lamp replacement period for looking up the lamp survival factor from the LSF curve. Note that the lamp replacement period you enter here and for the lamp-lumen maintenance factor should match Create working Plane Dialogue Box This is displayed when you use the tool to create a working plane, and you have specified the point that the plane passes through Name Enter a name for this working plane Height Enter the height of the point you have just specified Elevation Enter the angle between this plane and the horizontal, in degrees Rotation Enter the angle between this plane and the XZ plane, in degrees. Page 56 of 80

57 4.14. Create Task Area Dialogue Box This is displayed when you use the tool to create a task area in a room surface or in a working plane at surface level. Enter a name for the task area and start specifying points by clicking in the viewport or using key-ins. When you have specified at least three points defining the task area, you may press the Close button or type C to close the shape and finish. You may cancel at any time by pressing the Esc key or right-clicking with the mouse Name Enter a name for this task area Close Button This will be enabled when at least three points have been specified. Press it to close the shape and finish Cancel Button Press it to cancel creating a task area Custom Attributes Dialogue Box This is displayed when you use the tool to modify the attributes for the selected rooms. It uses the same Lighting page as is used on the FlucsPro dialogue bar. Use it in the same way to override the default attributes of all the selected rooms. Page 57 of 80

58 4.16. Assign Template Dialogue Box This is displayed when you use the tool to assign a template to the selected rooms Select Template List Box Select the template you wish to assign to the selected rooms Surface Properties Dialogue Box This is displayed when you use the use the tool to query a selected surface (at body level and surface mode, or at surface level with no openings selected) Orientation Shows the orientation of the surface Tilt Shows the tilt of the surface Area Shows the area of the surface Opening Properties Dialogue Box This is displayed when you use the use the tool to query a selected opening (at surface level with an opening selected). The caption of the dialogue box depends on whether the opening was a door, window or just a hole: Page 58 of 80

59 The items are the same as for the Surface properties dialogue box Assign surface properties dialogue box This allows you to assign surface properties of reflectance and transmittance (when set to 0 in CDB) to surfaces within the selected room or surface Picture Shows the selected room or surface. The surfaces that match the category from the Select category list box and also match the surface type from the Model surfaces of the following type list box are highlighted in the chosen highlight colour. These are the surfaces on which the Replace button will operate Copy button Copies the picture to the Windows clipboard. Page 59 of 80

60 Save button Saves the picture to a file Colours button Allows you to set the colours for displaying the selected/not selected surfaces in the picture Select category list box Shows the different categories into which the selected surfaces are organized. Select a category from this list box, and then select a surface type from the Model surfaces of the following type list box below. The matching surfaces will be shown in the picture Model surfaces of the following type list box Shows the different categories into which the selected surfaces are organized. Select a category from the Select category list box, and then select a surface type from this list box. The matching surfaces will be shown in the picture Reflectance Enter the required reflectance or select it from the typical surface types list box and press the Replace button Transmittance Only enabled for glazed surfaces. Note: Glazing elements will use the Visible Light Normal Transmittance value set on the Glazing construction in the Apache Constructions Database. When this CDB value is set to 0 the Transmittance can be set on the FlucsDL Assign Surface Properties dialog. Enter the required transmittance or select it from the typical surface types list box and press the Replace button Replace button Only enabled for glazed elements. Enter the required transmittance or select it from the typical surface types list box and press the Replace button Clean button Removes any surface type definitions from the model that were previously assigned to at least one surface but are not now (because these surfaces have now been assigned other surface types using this dialogue box). Use this after any large scale editing to retrieve any wasted space in the model. Page 60 of 80

61 Close button Closes this dialogue Surface display colours dialogue box This allows you to change the colours displayed in the Assign surface properties dialogue box. Clicking either colour displays a standard Windows colour picker dialogue box where you can select a different colour. Pressing the Default button restores the default colours Toolbars Dialogue Box This dialogue box allows you to turn on or off the display of the available toolbars Toolbar List Lists the available toolbars. The ones with a tick are currently displayed. Click the items to turn on or off the display OK Button Press this to close the box. Page 61 of 80

62 4.22. About FlucsPro Dialogue Box This is displayed when you use the use the About FlucsPro option. The full path to the executable file is given, along with its version number. Page 62 of 80

63 4.23. Threshold Table Dialogue Box This is displayed when you select the Threshold table menu option or button. The actual format of the table depends on which option you selected in the Preferences dialogue box. For the general purpose table, the values displayed depend on whether you are currently displaying illuminances or daylight factors, and also on the threshold value in the Daylight Threshold dialogue box. For the LEED NC 2.2 Credit 8.1 table, illuminance is always used and the threshold value is 25 fc or its metric equivalent (depending on the units in force). Page 63 of 80

64 4.24. Select Colour Set Dialogue Box This allows you to select a different false colour scheme for the contour plots. Page 64 of 80

65 4.25. IES HTML Viewer This is IES general-purpose version of the Internet Explorer browser, used to show the calculation results. It is displayed when calculations have finished or when you use the Show Results option. Using the File menu or the Print button, you may print the current data. Using the Edit menu, all or selected parts of the HTML may be copied to the clipboard ready to be pasted into a document. Page 65 of 80

66 4.26. Model Viewer This is displayed when you use the use the Model Viewer option. The tools are the same as when called from elsewhere in <VE>. Note that light fittings, working planes and task areas are also visible in the viewer. However, the illumination levels are not Model dialogue bar Key-in Used for entering key-in commands, which are mainly concerned with the accurate positioning of coordinates instead of using the mouse, e.g. DX=1.1,3.7. See the <VE> documentation for details of the available commands. Page 66 of 80

67 Prompt area Used for various prompts to the user while performing commands, but also to give you feedback when moving the mouse over the room surfaces after the analysis calculations. When expected to enter a point to start creating a working plane, it prompts you to enter the point: When no lighting calculations have been performed on the current room, it tells you this: When lighting calculations have been performed on the current room, and the mouse is moved over a selected surface at body level and illumination mode, or at surface level, it shows the surface name and the illumination at the nearest point on the surface: Page 67 of 80

68 5. Worked Example This example shows the use of both the calculation methods: Designing the layout using the Design command. Analysing the layout using the Analysis command Designing the Layout Using the Design Command Select a room and invoke the Design command. This brings up the Design dialogue box, which is a property sheet with three pages. Set an appropriate illuminance level and glare limit, and leave the rest of the data unchanged. Close the dialogue box. The design calculations then proceed until the Design results dialogue box is displayed. Page 68 of 80

69 Double-click a solution with a tick next to it. This closes the dialogue box, and another dialogue box shows you a summary of the FlucsPro design calculations. Close this dialogue box, and observe that the room is now populated with the selected layout. Note you must make sure that the tool for displaying Page 69 of 80

70 luminaires is selected: 5.2. Analysing the Layout Using the Analysis Command Make sure the same room is selected and that contour levels are toggled on (for faster display update). Invoke the Analysis command. This brings up the Analysis dialogue box: Page 70 of 80

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73 Step through the Wizard, entering values as shown on the diagrams; make sure you enter 0.01m for both the grid sizes. Press Finish. For a reasonably large room this will cause a warning similar to the one shown below: Please note that this is an indication of minimum processing time only, and may not be a particularly accurate prediction. The processing time may usually prove to be longer than predicted. However, if the time is excessive, press No to step back through the Wizard to change grid sizes, surface options etc. Then step through and press Finish again. This time the dialogue box may close with a different warning or none at all. If you still get a warning, press Yes to continue anyway. The calculations then proceed. At each phase the Progress dialogue box will show the progress. While creating the surfaces and grid points for the calculation: Page 73 of 80

74 While calculating artificial lighting from the light fittings: While calculating day lighting on the internal surfaces from the external openings (for efficiency this only looks at patches of sky that can be seen through openings from the internal surfaces): While calculating daylight on external surfaces (this is treated differently in daylight calculations each patch of sky is treated as a source of light): NB Daylight calculations may take quite a while if you have large windows. While performing the full inter-reflection calculations using progressive radiosity (this also may take a long while): Page 74 of 80

75 NB The full inter-reflection calculation may not converge very quickly if there are a large number of small patches in a room. You may press the Cancel button at any time - if so you will be asked if you really wish to cancel. The screen will be updated periodically to show the latest results. This can be useful when you are performing the full progressive radiosity inter-reflection calculation. When the calculations are finished the Analysis Results dialogue box is displayed. A selection of pages is shown below (but not the whole results as there are quite a lot). When this is closed you can use the commands to change the way the data is Page 75 of 80

76 displayed. Select some surfaces using the mouse or the Surface browser. Then use the various buttons to see the effect they have on the display. Page 76 of 80