- Trusses are designed for Residential Use Only.
- All trusses are designed based on asphalt shingle/plywood roof and drywall ceiling.
- Trusses are desinged to be installed on 2x4 or 2x6 stud walls only (except PD trusses).
- No truss can be field modified without written authorization from our office.
- Sealed drawings for trusses are available at a cost of $12.00 each design and must
be requested before fabrication.
- Wind resistant uplift connectors are not included in price (order separate).
- Trusses are designed for 90mph wind speed.
- Trusses (except PD trusses) are loaded as follows:
OHIO
Top chord .............. 25# (snow) LL, 10# DL
Bottom chord ........ 10# DL |
PA
Top chord .............. 30# (snow) LL, 7# DL
Bottom chord ........ 10# DL |
Light Storage Trusses are designed for 20# LL additional in storage area only
Attic truss room loads are designed as follows:
Room Height over 7' 0" ................ 40# Live Load
Room Height under 7' 0" .............. 30# Live Load
- Pole Barn trusses are for Agricultural Use Only.
- Trusses spaced 4' 0" on center are designed for steel roofing
installed
on purlins 2' 0" and no ceiling.
- Bottom chord bracing is required. (See engineering drawing for details)
- PB Trusses are loaded as follows:
OHIO
Top chord ............. 25# (snow) LL, 5# DL
Bottom chord ........ 2# DL |
PA
Top chord ............. 30# (snow) LL, 5# DL
Bottom chord ........ 2# DL |
Special Design Considerations
Listed below are some (but not all) of the special conditions
that must be designed by our office:
- Trusses with overhangs over 3' 0"
- Trusses with cantilevers over 4' 0"
- Any Attic truss with cantilevers
- All trusses with Brick Cantilevers
- Any truss with interior load bearing walls
- Trusses used for Commercial jobs
- Scissor trusses that are to be installed on walls wider than 2x6
- Trusses with special loads or design load other than shown above
- Trusses spaced wider than 2' 0" (dormers, stairways and chimneys, etc.)
- Girder trusses