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Parallam+ Deck Beam Sizer

iPhone / iPad
  • Utilities
  • Productivity
I want this app
Download from AppStore

Instantly & easily determine the proper 
Parallam® Plus PSL beam size for your deck.

• Eliminates unnecessary, view-obstructing columns.
• Uses three common inputs to ensure proper beam application in under 60 sec.
• Instantly emails calculations & building code documentation.


For longer spans & harsh exterior conditions 
— including decks — contractors turn to Trus Joist® 
Parallam® Plus PSL treated with Wolmanized preservative protection. This app quickly & easily determines the proper size Parallam® Plus PSL beam to use for your deck. 

Because Parallam® Plus PSL gives you more 
strength & greater durability, this app can reduce
 the number of required columns, preserving
 views & under-deck space without sacrificing
 safety or quality. 


• Developed for contractors, remodelers & other deck-building professionals
• Makes it easy to help your clients upgrade to the quality & performance of Parallam® Plus PSL
• Email & phone technical support available for complex or oversized decks & balconies


Building code = IBC
Use/Occupancy = Residential
Deck joist lengths = 10’, 12’, 14’ or 16’
(up to 2’ of which can be cantilevered)
Post Spacing = 10’, 12’, 14’, 16’, 18’ or 20'
(solution supports up to 2’ cantilevers on each side)
Supports = Two 6x6 Posts
Dead Load = 12 psf
Live Load = 40 Floor Load, 50 Snow Load,
60 Snow Load, or 70 Snow Load

Learn more about Parallam® Plus PSL by contacting 
your local Weyerhaeuser representative 
or visiting

PLEASE NOTE: The Parallam® Plus PSL Deck 
Beam Sizer was developed by Weyerhaeuser exclusively for use with Parallam® Plus PSL. It is NOT FOR USE with any other products, including traditional lumber.