Building Component Safety Information Flashcards
A. Installation checklist for installing trusses
1. Upon delivery check for:
a.
b.
- Upon delivery check for:
a. Missing or damaged connector plates
b. Damaged wood members
Do not do what without the manufacturers guidelines or specifications?
Do not cut, drill, relocate or repair trusses without the manufacturers guidelines or specifications.
Protect trusses from
weather, corrosion, bending and damage.
A. Installation checklist for installing trusses
Examine structural
Examine structural framing bearing points
Review number of X and Y for girder trusses
plies and nailing patterns
Space trusses to within + or - X
Space trusses to within + or - 1/4”
When do you install structural sheathing to plumbed trusses.
as soon as possible
B. Unloading and Lifting Trusses
what do you avoid?
Avoid lateral bending
B. Unloading and Lifting Trusses
When do you remove banding materials
When you are ready for install
B. Unloading and Lifting Trusses
upright truss bundles should be
braced
B. Unloading and Lifting Trusses
Do not lift by .
truss bands or webs
Do not store on uneven ground. Horizontally stored trusses are to have blocking spaced at X. to Y. intervals. Trusses stored longer than a Z time period need to be protected from weather but
still provide ventilation.
8ft to 10 ft
1 week
On trusses longer than x feet, use an engineering spreader bar
30 feet
Diagonal cross bracing must be installed every X feet
20 feet
Use at least X, Y, and Z nails in each truss for lateral restraint and diagonal bracing. ( Check nail schedule)
Nails must be flush.
Use at least 2-10d, 2-12d, or 2-16d nails
Roof trusses should be what when installed
Roof trusses should be plumb when installed.
Maximum tolerance for a roof truss over eight feet in height is x
2 inches
Bearing points for trusses must be + or -X”
1/4”
Maximum out of plane for a 33ft. bottom chord is X.
two (2) inches.
Do not walk on
unbraced or flat laying trusses
Diagonal braces every X truss spaces. (Maximum Y feet)
10 truss spaces
Maximum 20 feet
Lateral 2x4x12 foot restraints overlapped at least X trusses
2 trusses
Bottom chord lateral restraint is minimum at X feet on center.
15 foot on center
Verify all temporary and permanent bracing with
provided truss drawings.
Trusses:
Never load
unbraced trusses.
Trusses:
Never stack material at
the peak (ridge).
Trusses:
Never stack materials on the extended portion of
cantilevered trusses.
Trusses:
Never drop loads on
trusses
Trusses:
Loads should only be set on
truss bearing points.
What part of MIOSHA is called for during truss installation.
MIOSHA fall protection requirements
Do not do what at the top chord of unbraced trusses
“tie off”
There are now MIOSHA approved X available for truss placement.
anchorage brackets
