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Details

Pitch Pocket Detail

8/30/2015

 
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A Pitch Pocket is the last resort for sealing a roof penetration. When you have exhausted every possibility for accommodating a roof penetration in a more fool-proof way, a pitch pocket is the solution. 
A pitch pocket is simply a sheet metal sleeve flashed into the roofing membrane. The penetrating object, say a small angle, penetrates the roof membrane through the sleeve; and the sleeve is filled with a flowable, permanently mastic material to seal around the penetration. Originally this mastic material was wood resin, or pitch; ergo the name.
The reason a pitch pocket is a last resort is that nothing will maintain the seal forever in all types of weather. So you have just created an eventual leak. Yearly maintenance is required to avoid the leak.
The preferred solution is to penetrate the roof with a shape that can be easily flashed. Then transition to the irregular shape above the flashing. Equipment support frames are often done this way. 
Another alternative to a pitch pocket for small items like conduit is a 'Pipe Box'. 


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Linear Skylight & Ceiling Details

8/14/2015

 
Shell Detail
Skylights can have a dramatic impact on the interior of the building. Natural daylight provides interesting light and can reduce the need for other artificial types of lighting.  

A linear skylight requires integration with the structure. In this case roof joists were enclosed by and included into the ceiling design without adding any awkwardness.

The key features of the detail are the:
  • structural integration
  • roof flashing and counter-flashing
  • ceiling configuration and detailing to show off the skylight
  • identifying other components of the skylight system

B3020-A - Skylight


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Reception Counter Casework

8/5/2015

 
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A custom casework reception counter requires details to describe what is required. While striving to accommodate the work flow of the user, it is pointless to make it too customized - people move on.

Not shown here are the ADA counter height and knee space that is required now. See this article for one solution.

The transaction top is shown 14" deep, which is a good size for signing in on visitors' list. Overhanging the front face of the casework a few inches would improve the detail. Also using a work surface height of 30" would be preferred.

The front face of the casework can be any material you like. This counter was curved to fit the space, and limited the choices somewhat.

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