Roof Flashcards
Gable trusses are to be held _________ with the wall below (no tolerance).
Flush
Trusses are not to be ________, _________, or have wane in excess of _______ of an inch on the narrow face, and ________ inch on the wide face of the member.
Damaged
Splintered
1/2”
1”
What’s the tolerance for plumb on trusses?
1/4” over the entire height of the truss
What’s the gap between trusses and non-bearing interior walls after the roof is loaded?
Minimum 1/4” gap
How much can you notch the top plate of a non-bearing interior wall?
1/2”
What connector must be installed on all trusses at bearing walls?
H2.5 or equivalent
Ceilings are flat within ______ of an inch in ______ feet, except at ceiling to wall joints where the tolerance is _____ of an inch in ______ feet.
3/8” in 8’
1/4” in 8’
If fascia joints exceed ______ of an inch, it is to be replaced.
1/4”
Gun nails in fascia are to be _________.
Patched
2X6 truss tails are nailed a minimum of ______ nails.
2X4 truss tails are nailed a minimum of ______ nails.
2X6: 3 nails
2X4: 2 nails
How are fascia returns that butt up to an adjacent wall installed?
A minimum 15lb grade D vapor barrier is installed completely behind the return, it extends a minimum 12” past all edges.
Fascia returns that do not butt up to an adjacent wall are to extend a minimum of ______ inches past the last truss.
24”
How are barge blocks nailed?
3 nails through the fascia and 2 nails into the outlook
The barge fascia is cut _______ inches off the roof deck for flat tile, and ______ inches for S tile.
3 1/2”
5 1/2”
Where are fascia clips installed?
All joints and corners. Not required at the ridge. However, if one is installed at the ridge, there must be clips on all the ridges.
Eave blocks and vents are to be installed ___________, __________ and ____________.
Plumb
Level
Square
Caulk gaps in eave blocks that are between ________ of an inch and _______ of an inch.
Do NOT caulk gaps smaller than ________ of an inch.
1/8” - 1/4”
1/8”
Replace eave blocks that have gaps that exceed ________ of an inch.
1/4”
Roof sheathing is installed with the long dimension running ____________ to the trusses.
Perpendicular
Roof sheathing should be installed with the joints _____________.
Staggered
All roof sheathing is to be installed with adjoining edges _________ to each other + or - _________ of an inch.
Flush
1/16”
Roof sheathing fasteners are set ___________ with the surface of the sheathing.
Flush
For proper diaphragm nailing, the roof sheathing is to be fastened to the eave blocks with a minimum of ______ nails, or ______ staples.
3
6
Hip and ridge board should be between ___________ and _______ inches away from the edge of the fascia.
12” - 15”
What size hip and ridge board is used for FLAT tile?
Hip: 2” x 4”
Ridge: 2” x 2”
What size hip and ridge board is used for S-tile?
Hip: 2” x 6”
Ridge: 2” x 4”
What size mopboard do we use?
And where is it installed?
2x6
Head and rake walls
What type of material do we use for lath backing?
2x
How do we install lath backing above mopboard?
Between the studs at all spaces over 6”, and 1” above the mop.
All flat roofs have a minimum slope of ______ of an inch in ______ feet.
1/2” in 12’
How are gable vents installed? 1. 2. 3. 4.
- Plumb, level and square
- With solid backing around the perimeter
- Defect free
- Minimum 15lb grade D vapor barrier or window flashing around the perimeter
What size are O’Hagin vent cutouts?
7” x 19”
O’Hagins are to be cut ______ feet away from hips, ridges or valleys.
2’
The framers are to _____________ O’Hagin cutouts.
Protect (block across hole)
A min. ______ inch x ______ inch work platform is to be installed for the AC/Furnace a minimum of _______ inches up from the bottom edge of the bottom cord of the truss.
30” x 30”
9”
_________ the edges of the catwalk if it’s not supported by the truss.
Block
A min. _________ inch wide continuous catwalk is to be attached to the AC/Furnace work platform.
22 1/2”
Attic accesses are to have a min. _______ inch head clearance.
30”
Attic accesses within an insulated area are to have a min. ______ inch tall insulation barrier made from ________ material.
12”
2x
What is to be done with all shiners at exposed roofing areas?
Removed and patched
What is the tolerance for damage, splits, or wane in fascia?
No tolerance
What is the tolerance for cracks/splits in exposed wood (beams, blocks, tails)?
6” in length and 3/32” in width
Knot holes in exposed wood (beams, blocks, tails) are not to exceed ________ of an inch in diameter.
1/2”
Defects or delamination of any exposed wood is _______________ and must be _____________.
Unacceptable
Replaced
How is truss lateral bracing to be installed?
Specifically per the engineered truss calcs
Trusses are not to sit on top of any non-bearing wall after what?
The roof has been loaded.
All 3 point bearing trusses are to be ____________ for full bearing, and have an _________ installed at the wall to truss connections at the time the trusses are set.
Shimmed
H2.5
