Socrative - Framing Flashcards
How do you square a wall before it is raised?
Measure the diagonals
How much depth would be left over in a 2X6 (38mmX140mm) if you made the deepest notch allowed by the code?
3 11/16” (93mm)
After installing floor joists, what is the next step in laying out the first row of plywood subfloor?
Snap a control chalk line perpendicular to joists
What is the theoretical length (before deductions) of a common rafter on a building with a 24’ (7.315M) span and a 1:1.5 slope?
14’-51/16” (4.396M)
What numbers would be used on the framing square to layout cross bridging for a floor with 2X10 joists joists spaced 16” on center?
Joist depth less 3/8” on the tongue and the distance between the joists on the body
What is the maximum on center spacing of blocking under a non-loadbearing wall parallel to the floor joists?
1200mm
What is the largest increment of 3-4-5 that could be used to assure a building that is 36’-6” X 45’-3” is square, if your space is too restricted to go outside the building’s footprint?
33-44-55
Multiple of 11
Where should you begin installing floor sheathing on top of the joists?
Corner
What length should continuous ridge blocks be cut to?
22 3/8”
Calculation
O.C. 24” - 3/4” - 3/4” - 1/8
What is the maximum diameter hole that can be drilled into the center of a joist at mid span?
1/4 the joist depth
Key word: Drilling
9.23.5.1. Holes Dilled in Framing Members
1 Holes dilled in roof, floor or ceiling framing
members shall be not larger than one-quater the depth of
the member and shall be located not less than 50 mm from
the edges, unless the depth of the member is increased by
the size of the hole.
If nailed properly, what is the minimum size ledger strip that can be used to rest joists on when attaching to the side of a wood beam?
A 38mmX38mm
9.23.9.2. Joists Suppoted by Beams
1 Floor joists may be suppoted on the tops of beams
or may be framed into the sides of beams.
2 When framed into the side of a wood beam, joists
refered to in Sentence 1 shall be suppoted on,
(a) joist hangers or other acceptable mechanical
connectors, or
(b) not less than 38 mm by 64 mm ledger stips nailed
to the side of the beam, except that 38 mm by 38 mm ledger
stips may be used provided each joist is nailed to the beam
by at least four 89 mm nails, in addition to the nailing for
the ledger stip required in Table 9.23.3.4.
What length would the collar tie be placed 6’ (1.828M) above the top plate on a roof with a 36’ (10.972) span and a 1:1 slope?
24’ (7.316M)
What angle would you set the saw to when cutting the end of a ridge board on a hip roof?
90°
What is the correct sequence to install these framing members around an opening in a floor?
Inner trimmers, outer headers, tail joists, inner headers, outer trimmers
How far can 2X 8 floor joists be cantilevered when supporting a roof load?
400mm
Key words: Cantilevered floor joists
9.23.9.9. Cantilevered Floor Joists
1 Floor joists suppoting roof loads shall not be
cantilevered more than 400 mm beyond their suppots
where 38 mm by 184 mm joists are used and not more than
600 mm beyond their suppots where 38 mm by 235 mm or
larger joists are used.
What is the minimum size of web member in a roof truss?
2X3
How much sheathing is required for one end of a gable roof with a 32’ (9.753M) span and a 1 in 1.5 roof slope?
170.6 ft2 (15.854M²)
What is the size of the ribbon board housed into studs to rest joists on?
19mm X 89mm
9.23.9.1. End Bearing for Joists
(1) Except when supported on ribbon boards, floor joists
shall have not less than 38 mm length of end bearing.
(2) Ribbon boards referred to in Sentence (1) shall be
not less than 19 mm by 89 mm lumber let into the studs
What is the length of a hip rafter for a building with a span of 22’ (6.705M) with a 1:3 slope?
15’- 11 13/16”
4.871M
If the floor joists span 3M, what would be the minimum number of rows of cross bridging required?
1
9.23.9.4. Strapping and Bridging in Tables
A1 and A2
1 Except as permitted by Sentence 5, where
strapping is specified in Table A1, it shall be,
(a) not less than 19 mm by 64 mm, nailed to the
underside of floor joists,
(b) located not more than 2.1 m from each suppot or
other rows of strapping, and
(c) fastened at each end to a sill or header.
2 Where bridging is specified in Table A1, it shall
consist of not less than 19 mm by 64 mm or 38 mm by 38
mm cross bridging located not more than 2.1 m from each
support or other rows of bridging.
# of rows of bridging =
= 1.42857 round up = 2 - 1 (no starter or end)
= 1 row
What is the minimum distance between joints in the top two plates of a framed wall?
One stud spacing
Key words: Top plates, joints
9.23.11.4. Joints in Top Plates
(1)Joints in the top plates of loadbeaing walls shall be
staggered not less than one stud spacing
How are the joists treated when framing around a typical stairwell opening?
Double joists all around opening
Both are typically doubled because the average stairwell opening is larger that both dimensions listed
below (1.2M X 800mm).
9.23.9.5. Header Joists
(1) Header joists around floor openings shall be doubled
when they exceed 1.2 m in length.
9.23.9.6. Timmer Joists
(1)Timmer joists around floor openings shall be
doubled when the length of the header joist exceeds 800
mm.
How long is the ridge board on a hip roof, If the house is 18’ (5.485M) X 35’ (10.667M)?
17’0” (5.182M)
How many square feet (metres) of subfloor would cover a circular floor with a 13’ (3.962M) diameter?
132.73 ft² (12.33M²)
What is the length of the 5th hip jack rafter in from the corner of the building if your on center spacing is 16” (406mm) and your roof has a 2:3 slope?
B
8’ - 0 3/16”
(2440mm)
When laying out 1 1/2” wall studs on the top and bottom plates at 24” (610mm) on center, what would be the distance from the starting edge of the plates to the face of the 3rd stud?
47 1/4” (1.201M)
What is a floor framing member placed perpendicular to regular joists called?
Header
What can be done to reduce deflection in floor sheathing?
Decrease the on center spacing of the floor joists
How long must a header joist be before it has to be doubled?
1200mm
9.23.9.5. Header Joists
Header joists around floor openings shall be doubled
when they exceed 1.2 m in length.
How many joists spaced 16” (406mm) on center are required for a floor that is 52’ (15.834M) long?
40
# of joists = (length of building ÷ o.c spacing rounded up to the next whole #) + 1 starter Imperial: # of joists = 52' ÷ 1.333333' = 39 + 1 = 40 Metric: # of joists = 15.834M ÷ .406M = 39 q1 = 40
What is done when sheathing a floor to prevent it from squeaking in the future?
Apply adhesive to floor joists prior to laying sheathing.
What is the minimum size material used for collar ties?
38mm X 89mm
Key words: Collar ties
9.23.13.7. Intermediate Support for Rafters and Joists
Ceiling joists and collar ties of not less than 38 mm
by 89 mm lumber are permitted to be assumed to provide
intermediate support to reduce the span for rafters and joists
where the roof slope is 1 in 3 or greater.
What should non-loadbearing partitions running parallel to floor joists be placed over?
Blocking
Whenever you install a partition parallel to the floor joists the bottom plate needs to have sufficient
bearing on the floor framing below to prevent deflection and weakening the floor system. Options A and
11/2”
C will only provide
of bearing, which is not enough. Option B will satisfy code, but option D is the
best answer because it gives your petition full support, while doubled up 2X joists will only give you 3” of
bearing.
- In what order should these components be installed when constructing a traditional overhang?
Rafter, fascia, ledger, lookout
Install rafters, attach fascia to end of your rafters, install ledger board above
soffit line against exteior wall, and level lookouts from ledger board to rafter
connection.
How should floor joists with crowned edges be installed?
Place all crown edges up
How much larger than the window dimensions should the rough opening be for a window?
1”
You will need to add 1” (1/2” each side) to the width and 1” (1/2” to the top and 1/2” to the bottom.
-the 1/2” on the bottom is to give you room for adjustment while levelling the bottom of your window
-the 1/2” space above the window is to allow for the building frame to settle without crushing/ cracking
the window, and,
- the 1/2 “ on either side is to allow rooms for shims while plumbing the side of the window frame
What’s the difference in lengths of gable studs spaced 16” (406mm) on center for a 1:2 sloped roof?
8” (203mm)
difference in length of gable stud= on center spacing X (unit rise /unit run)
What is the main purpose of a lintel?
To distribute the load to the jacks at the sides of the opening
What is the minimum size of a let-in brace for a 2X4 stud wall?
A
19mm X 89mm
9.23.10.2. Bracing and Lateral Support
1 Except as provided in Sentence 2, each exterior
wall in each storey shall be braced with at least one diagonal
brace conforming to Sentence 3.
2 Bracing is not required where the walls,
(a) have an interior finish conforming to the
requirements of Section 9.29., or
(b) where the walls are,
(i) clad with panel-type siding,
(ii) diagonally sheathed with lumber, or
(iii) sheathed with plywood, OSB, waferboard,
gypsum or fiberboard sheathing.
3 Where bracing is required, it shall,
(a) consist of not less than 19 mm by 89 mm wood
members,
(b) be applied to the studs at an angle of approximately
45° to the horizontal, and
(c) extend the full height of the wall on each storey
When using steel studs as framing members, how should all wall, floor and ceiling components be installed?
All framing is installed “in-line” to transfer loads continuously