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QPR 4 Study Guide > Roof > Flashcards

Roof Flashcards

1
Q

Gable trusses are to be held _________ with the wall below (no tolerance).

A

Flush

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2
Q

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.

A

Damaged
Splintered
1/2”
1”

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3
Q

What’s the tolerance for plumb on trusses?

A

1/4” over the entire height of the truss

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4
Q

What’s the gap between trusses and non-bearing interior walls after the roof is loaded?

A

Minimum 1/4” gap

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5
Q

How much can you notch the top plate of a non-bearing interior wall?

A

1/2”

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6
Q

What connector must be installed on all trusses at bearing walls?

A

H2.5 or equivalent

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7
Q

Ceilings are flat within ______ of an inch in ______ feet, except at ceiling to wall joints where the tolerance is _____ of an inch in ______ feet.

A

3/8” in 8’

1/4” in 8’

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8
Q

If fascia joints exceed ______ of an inch, it is to be replaced.

A

1/4”

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9
Q

Gun nails in fascia are to be _________.

A

Patched

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10
Q

2X6 truss tails are nailed a minimum of ______ nails.

2X4 truss tails are nailed a minimum of ______ nails.

A

2X6: 3 nails

2X4: 2 nails

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11
Q

How are fascia returns that butt up to an adjacent wall installed?

A

A minimum 15lb grade D vapor barrier is installed completely behind the return, it extends a minimum 12” past all edges.

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12
Q

Fascia returns that do not butt up to an adjacent wall are to extend a minimum of ______ inches past the last truss.

A

24”

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13
Q

How are barge blocks nailed?

A

3 nails through the fascia and 2 nails into the outlook

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14
Q

The barge fascia is cut _______ inches off the roof deck for flat tile, and ______ inches for S tile.

A

3 1/2”

5 1/2”

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15
Q

Where are fascia clips installed?

A

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.

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16
Q

Eave blocks and vents are to be installed ___________, __________ and ____________.

A

Plumb
Level
Square

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17
Q

Caulk gaps in eave blocks that are between ________ of an inch and _______ of an inch.
Do NOT caulk gaps smaller than ________ of an inch.

A

1/8” - 1/4”

1/8”

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18
Q

Replace eave blocks that have gaps that exceed ________ of an inch.

A

1/4”

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19
Q

Roof sheathing is installed with the long dimension running ____________ to the trusses.

A

Perpendicular

20
Q

Roof sheathing should be installed with the joints _____________.

A

Staggered

21
Q

All roof sheathing is to be installed with adjoining edges _________ to each other + or - _________ of an inch.

A

Flush

1/16”

22
Q

Roof sheathing fasteners are set ___________ with the surface of the sheathing.

A

Flush

23
Q

For proper diaphragm nailing, the roof sheathing is to be fastened to the eave blocks with a minimum of ______ nails, or ______ staples.

A

3

6

24
Q

Hip and ridge board should be between ___________ and _______ inches away from the edge of the fascia.

A

12” - 15”

25
Q

What size hip and ridge board is used for FLAT tile?

A

Hip: 2” x 4”

Ridge: 2” x 2”

26
Q

What size hip and ridge board is used for S-tile?

A

Hip: 2” x 6”

Ridge: 2” x 4”

27
Q

What size mopboard do we use?

And where is it installed?

A

2x6

Head and rake walls

28
Q

What type of material do we use for lath backing?

A

2x6

29
Q

How do we install lath backing above mopboard?

A

Between the studs at all spaces over 6”, and 1” above the mop.

30
Q

All flat roofs have a minimum slope of ______ of an inch in ______ feet.

A

1/2” in 12’

31
Q 
How are gable vents installed?
1. 
2.
3.
4.
A
  1. Plumb, level and square
  2. With solid backing around the perimeter
  3. Defect free
  4. Minimum 15lb grade D vapor barrier or window flashing around the perimeter
32
Q

What size are O’Hagin vent cutouts?

A

7” x 19”

33
Q

O’Hagins are to be cut ______ feet away from hips, ridges or valleys.

A

2’

34
Q

The framers are to _____________ O’Hagin cutouts.

A

Protect (block across hole)

35
Q

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.

A

30” x 30”

9”

36
Q

_________ the edges of the catwalk if it’s not supported by the truss.

A

Block

37
Q

A min. _________ inch wide continuous catwalk is to be attached to the AC/Furnace work platform.

A

22 1/2”

38
Q

Attic accesses are to have a min. _______ inch head clearance.

A

30”

39
Q

Attic accesses within an insulated area are to have a min. ______ inch tall insulation barrier made from ________ material.

A

12”

2x

40
Q

What is to be done with all shiners at exposed roofing areas?

A

Removed and patched

41
Q

What is the tolerance for damage, splits, or wane in fascia?

A

No tolerance

42
Q

What is the tolerance for cracks/splits in exposed wood (beams, blocks, tails)?

A

6” in length and 3/32” in width

43
Q

Knot holes in exposed wood (beams, blocks, tails) are not to exceed ________ of an inch in diameter.

A

1/2”

44
Q

Defects or delamination of any exposed wood is _______________ and must be _____________.

A

Unacceptable

Replaced

45
Q

How is truss lateral bracing to be installed?

A

Specifically per the engineered truss calcs

46
Q

Trusses are not to sit on top of any non-bearing wall after what?

A

The roof has been loaded.

47
Q

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.

A

Shimmed

H2.5

QPR 4 Study Guide (8 decks)

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