# Reading Assignment for next week: HCL Chapter 14 ELECTRIC LIGHTING.

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Reading Assignment for next week: HCL Chapter 14 ELECTRIC LIGHTING

DAYLIGHTING Assignment 2 Office Building Daylighting Exercise

Assignment 02: Office Building Daylighting Exercise Design the façades and the roof of a given three story office building in order to maximize the use of daylight.

The following design parameters apply: For energy efficiency reasons, the maximum glazing area of the envelope cannot exceed 50% (per floor, measured from finish floor to finish floor) Average Daylight Factor for daylit general office areas as per recommendations (page 60, Green Studio Handbook) 2 nd Floor: Determine and maximize the depth of the space to be daylit. Depth is the distance inward from the perimeter wall. Use sidelighting as daylighting strategy 3 rd floor: all floor area (except core areas) to be daylit with recommended average daylight factor. Use a combination of top and sidelighting as daylighting strategy. All windows, except north facade to be equipped with light shelves, determine correct location and sizes based on design procedure and sample problem in Green Studio Handbook. Shading requirements No direct sunlight on the glazing areas below the light shelve of the south façade for Altitude angles of 50° or higher (measured perpendicular to the façade) No direct sunlight on the glazing areas below the light shelve of the east and west façades for Altitude angles of 30° or higher (measured perpendicular to the façade) No direct sunlight on the glazing areas of the north façade for Azimuth angles between 0° and 20° north of east, and north of west. These requirements will need to be addressed in the form of external shading devices such as horizontal/vertical louvers, screens, etc.

For energy efficiency reasons, the maximum glazing area of the envelope cannot exceed 50% (per floor, measured from finish floor to finish floor)

Average Daylight Factor for daylit general office areas as per recommendations

2 nd Floor: Determine and maximize the depth of the space to be daylit. Depth is the distance inward from the perimeter wall. Use sidelighting as daylighting strategy

5 th floor – possible location of library

5 th floor: all floor area (except core areas) to be daylit with recommended average daylight factor. Use a combination of top and sidelighting as daylighting strategy.

All windows, except north side to be equipped with light shelves, determine correct location and sizes based on design procedure and sample problem in Green Studio Handbook.

Shading requirements No direct sunlight on the glazing areas of the south façade for Altitude angles of 50° or higher (measured perpendicular to the façade) No direct sunlight on the glazing areas of the east and west façades for Altitude angles of 30° or higher (measured perpendicular to the façade) No direct sunlight on the glazing areas of the north façade for Azimuth angles between 0° and 20° north of east. These requirements will need to be addressed in the form of external shading devices such as horizontal/vertical louvers, screens, etc.

Deliverables: Plan of typical floor (2-4) indicating exterior shading systems and extent of sidelit daylighting zone. Scale: 1/32=1-0 Reflected ceiling plan (RCP) of 5th floor indicating exterior shading systems, extent of sidelit daylighting zone, extent of toplit daylighting zone, location and extent of skylights, roof monitors, etc.) Scale: 1/32=1-0 Schematic plan, section, exterior elevation of a typical 2 nd floor exterior wall bay of the East/West,South and North facades (20wide, 1 story high). Scale: ¼=1-0 Schematic plan, section, exterior elevation of a typical toplighting device of the top floor Scale: ¼=1-0 2 Isometrics or Perspectives of overall building (showing all 4 facades plus roof) Calculations showing compliance with all design parameters (closely follow the format of the sample problems in the Green Studio Handbook Reading), use simple diagrams to support calculations Format as 11x17 landscape pages, package as a pdf file.

Deliverables: Revit Conceptual Massing Exercise: Model and calculate three different options, and present the resulting energy use diagrams 1. Floor to ceiling glass windows 2. 50% glazing, no shading devices 3. 50% glazing with shading devices (use the same u and r-values for walls and windows for all three schemes) Tutorial can be found here: http://usa.autodesk.com/adsk/servlet/item?siteID=123112&id=15400801 Format as 11x17 landscape pages, package as a pdf file.

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