Roofs, walls and floors may be identified as ‘interior surfaces marking project boundaries’ (surfaces that cannot transfer heat) in TSPR.  There may be times, where you want to generate a TSPR for a portion of a building instead of the entire building. This might be the case if only a portion of the building has an HVAC system or a use type that can be analyzed by TSPR (see examples below).  


For such scenarios, select a block on the Construction screen, and select the ‘Interior surface marking project boundary’ checkbox for the Roof and/or Floor where applicable.  For Walls, select the 'Edit Surfaces' button and select individual walls and the checkbox to assign as 'Interior surface marking project boundary' surfaces.


This will prevent over estimation of heat transfer from surfaces that would have otherwise been modeled as exterior walls, roofs and/or floors.


Examples:


See the example images below which include a building with an office space adjacent to a warehouse, and a building with an office space above a post office.  Only the office portions of the buildings need to comply with TSPR; the warehouse and the post office do not.   


Building 1


Building 2


Entry and configuration steps:


Building 1:  

  1. Create a block and assign the Office use type.  
  2. Create and assign a Wall to the block from the Construction screen
  3. Click on the 'Edit Surfaces' button
  4. Click on the surface that would be adjacent to the warehouse
  5. Select the ‘Interior surface marking project boundary’ checkbox for that surface only

Building 2:  

  1. Create a block and assign the Office use type.  
  2. Create and assign a Floor to the block from the Construction screen
  3. Click on the block
  4. Select the ‘Interior surface marking project boundary’ checkbox for the Floor