ecotect presentaion

Ecotect

Design Analysis

Important Dates

There are four important dates to remember when consideringsun position:

21st December _winter solstice _sun at lowest noon altitude

21st March/ 21st September _spring/autumn equinox _sun risesdue east, sets due west

21st June _summer solstice _sun at highest noon altitude

Importing in Ecotect

• When importing a dxf file in Ecotect, make sure you import it under the proper scale.

• In order to maintain the layers, select: • Zone → Select All and then Zone →

Add New Zone and then Import Into Existing.

• 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:

• Select All and then Modify → Merge Coincident Triangles

• Check if the Surface Normals are pointing in the right direction (outwards).

• Display → Surface Normals (Ctrl + F9)• You may need to change from a

perspective view to plan view for a better control.

• In case there are surface norms pointing inwards you have to select them and reverse them

• Modify → Reverse Normals (Ctrl + R).

Setting Material Properties

Set the appropriate Material Propertiesfor the building elements.

Double click on the selected materials andedit their reflectivity (colour).

Proper reflectivity values are:

floors: 0.25 walls: 0.50 ceilings: 0.75

Setting up a Grid for Analysis

Grid cells should not be greater than 1 x 1 m.

Fit the grid to the selected floor area.

Finally, adjust the grid offset (i.e. working plane) according to the use of the building.(i.e. a kindergarten has a lower working plane than an airport check-in hall). Usually, the analysis grid is offset at 600 mm from the floor.

Sun Path

Annual

Sun Path

Hourly

Shadows and Shading

Shadows & Shading

(Ecotect images)

Shadows & Shading

Dudley House

Shadows & Shading

Right-to-Light

(Ecotect images)

Right-to-light analysis in the UK involves answering three basic questions:

• Are obstructions high enough for concern ?• If so, do they block too much of the sky ?• If so, is the no-sky-line of each room significantly impacted ?

Right-to-Light

When dealing with the height of obstructions, the guidelines suggest drawing a sectionthrough the site normal to each main face of the building.Then, a line is drawn from a point 2m above the ground outwards from the building at anangle to 25° to the horizontal.If any building projects above this line, it is high enough for concern.

Lighting Analysis – Daylight factor (%)

(Ecotect images)

Lighting Analysis – Daylight factor (%)

Walkden High School

Lighting Analysis – Illuminance (lux)

Masdar Hotel & Conference Centre

Lighting Analysis – Illuminance (lux)

Toronto Metro

10 x 2 m opening 10 x 6 m opening

Solar Radiation

• Incident solar radiation • Absorbed/ transmitted radiation• Sunlight/ overshadowing hours

Solar Radiation

Dudley House

Solar Radiation

Bothwell Plaza

Without Shading With Shading

Solar Radiation

Masdar Hotel & Conference Centre

ecotect presentaion

Documents