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# Ecotect Presentaion

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A how to guide for using Ecotect

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• nice jobe but im am in a big mess with ecotect, and i dont know what to do?

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### Ecotect Presentaion

1. 1. Ecotect Design Analysis
2. 2. Important Dates <ul><li>There are four important dates to remember when considering </li></ul><ul><li>sun position: </li></ul><ul><li>21st December _winter solstice _sun at lowest noon altitude </li></ul><ul><li>21st March/ 21st September _spring/autumn equinox _sun rises </li></ul><ul><li>due east, sets due west </li></ul><ul><li>21st June _summer solstice _sun at highest noon altitude </li></ul>
3. 3. Importing in Ecotect <ul><li>When importing a dxf file in Ecotect, make sure you import it under the proper scale. </li></ul><ul><li>In order to maintain the layers, select: </li></ul><ul><li>Zone -> Select All and then Zone -> Add New Zone and then Import Into Existing. </li></ul><ul><li>Once you have imported the model you need to structure your file to contain the minimum amount of surfaces, i.e. reduce the number of polygons: </li></ul><ul><li>Select All and then Modify -> Merge Coincident Triangles </li></ul><ul><li>Check if the Surface Normals are pointing in the right direction (outwards). </li></ul><ul><li>Display -> Surface Normals (Ctrl + F9) </li></ul><ul><li>You may need to change from a perspective view to plan view for a better control. </li></ul><ul><li>In case there are surface norms pointing inwards you have to select them and reverse them </li></ul><ul><li>Modify -> Reverse Normals (Ctrl + R). </li></ul>
4. 4. Setting Material Properties <ul><li>Set the appropriate Material Properties </li></ul><ul><li>for the building elements. </li></ul><ul><li>Double click on the selected materials and </li></ul><ul><li>edit their reflectivity (colour).  </li></ul><ul><li>Proper reflectivity values are: </li></ul><ul><li>floors: 0.25     walls: 0.50     ceilings: 0.75 </li></ul>
5. 5. Setting up a Grid for Analysis <ul><li>Grid cells should not be greater than 1 x 1 m. </li></ul><ul><li>Fit the grid to the selected floor area. </li></ul><ul><li>Finally, adjust the grid offset (i.e. working plane) according to the use of the </li></ul><ul><li>building.(i.e. a kindergarten has a lower working plane than an airport check- </li></ul><ul><li>in hall). Usually, the analysis grid is offset at 600 mm from the floor. </li></ul>
6. 6. Sun Path Annual
7. 7. Sun Path Hourly