Slideshow

Pattern 15: Daylight From top and Side (Office Building)

Section Depth of 40’-0” with Private Offices at Perimeter

Pattern Filmstrip

Despite the presence of re-lites in the partition wall, private offices at the perimeter leave the entire open office area substantially below minimum daylight illumination criteria. These offices also block all views to the exterior from the open office area. This is almost universally the case where private offices separate open office areas from the perimeter.

Pattern 15: Daylight From top and Side (Office Building)

Section Depth of 40’-0”

Pattern Filmstrip

This configuration represents a very common section depth in contemporary office buildings. At 40’-0” deep the section depth substantially exceeds the daylight potential of side lighting. The interior half of the open office area is much darker than the perimeter zone. The contrast between perimeter windows and the ceiling and vertical surfaces creates the potential for glare. Nearly half of the office area falls short of commonly accepted minimum daylight illumination criteria.

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Pattern 15: Daylight From top and Side (Office Building)

Section Depth of 40’-0” with Supplemental Skylights

Pattern Filmstrip

Through the inclusion of a ribbon skylight to supplement daylight from the perimeter, this open office area achieves effective and balanced daylighting to a section depth of 36’-0”.  Primary wall surfaces and the ceiling plane receive sufficient distribution of daylight illumination to maintain a balanced composition of ambient light. Horizontal illumination levels meet commonly accepted daylight illumination criteria across the open office area.

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Pattern 15: Daylight From top and Side (Office Building)

Section Depth of 40’-0” with Supplemental Skylights and Furniture

Pattern Filmstrip

Daylight from the perimeter supplemented by a ribbon skylight combine to provide a balanced distribution of ambient illumination in the open office area. Office partitions are kept low parallel to the daylight apertures to avoid excessive shadowing. Partitions that are perpendicular to daylight sources are allowed to be higher for visual and acoustic privacy. Horizontal daylight illumination is sufficient to meet ambient illumination goals during much of the occupied hours. Providing users with supplementary task lighting will allow for additional illumination at workstations when required.

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Pattern 15: Daylight From top and Side (Office Building)

Section Depth of 36’-0” with Supplemental Skylights and Furniture (As Built)

Pattern Filmstrip

Daylight from the perimeter supplemented by a ribbon skylight combines to provide a balanced distribution of ambient illumination in the open office area. Office partitions are kept low parallel to the daylight apertures to avoid excessive shadowing. Partitions that are perpendicular to daylight sources are allowed to be higher for visual and acoustic privacy. Horizontal daylight illumination is sufficient to meet ambient illumination goals during substantial periods of the occupied hours. Manually controlled task lighting is integrated into workstations for localized task illumination. Private offices are located adjacent to the skylight on the “in-board” side of the open office area. This allows for daylight and views from the open office areas, and the use of daylight responsive electric lighting controls throughout the open office to reduce lighting power consumption.

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Pattern 15: Daylight From top and Side (Office Building)

Section Depth of 30’-0”

Pattern Filmstrip

At 30’-0” deep, the section depth just begins to exceed the daylight potential of side lighting in this configuration. The “back” wall to the right begins to lose surface brightness and horizontal illumination levels fall short of commonly accepted daylighting criteria for office environments.

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Pattern 15: Daylight From top and Side (Office Building)

Section Depth of 30’-0” with Supplemental Skylights

Pattern Filmstrip

The addition of a linear skylight at the interior wall provides balanced daylight despite the 30’-0” section depth. The skylight “washes” the interior-most wall, creating balanced brightness across the section. Horizontal illumination levels meet commonly accepted daylight illumination criteria across the entire open office area.

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