201bB: Wall Framing - B Flashcards
1x4
18x89
2x3
38x64
2x4
38x89
2x6
38x140
2x8
38x184
2x10
38x235
2x12
38x286
12oc
300oc
16oc
400oc
24oc
600oc
4’x8’
1200x2400
Purposes of plates
1) maintain OC
2) transfer loads
Secondary purpose of CAP PLATES
tie corners together
Common exterior studs
2x6
Common interior studs dimensions
2x4
Common plumbing wall studs
2x6
What supports lintels?
Trimmer
Lintel bearing minimum on ONE END
38mm
Can you splice a trimmer?
No, must be full length from sole plate to lintel
Can a trimmer stand alone?
No, must be nailed to full size stud
Common lintel size
38x235 (2x10)
Common lintel ply number
2
Can INTERIOR LINTELS be on flat and single?
Yes, only when non-load-bearing. Load bearing walls need proper load transfer to the floor
What do cripples do besides frame the window bottom height?
Maintain OC for exterior and interior sheathing/finishes
Are fillers and rough sills the same length?
Yes
4 purposes of corner posts (L’s)
1) Tie walls together
2) exterior sheathing support
3) interior backing for drywall
4) insulation space
Where do we find stud length on blueprints?
Refer to ceiling height from floor to determine which studs + 3 plates must be used
What is a common miscalculation when determining exterior plate locations and lengths?
Not accounting for 3/8 sheathing (10mm)
Can I overhang my 2x6 wall plate by 2-1/2”?
No, your max overhang is 1/3 of the board, not half
Layout direction
Left to right, front to back
Ideal stud spacing falls on top of joists?
Yes
My wall isn’t straight even after bracing, what went wrong?
Shitty bent plates selected
3 ways to splice walls
1) same stud
2) staggered studs (top and bottom plates)
3) build separate walls and nail together + tie with cap plate
All windows dimensions and door WIDTHS must add how many mm for RO?
20mm
All door HEIGHTS must add how many mm for RO?
10mm
What dimension do we need to start laying out a window on plates?
Dimension from plan to CENTRE of opening
Why are all lintels kept the same size even when not necessarily needing that much strength?
Consistent heights to minimize mistakes
On a typical opening with two trimmers total, what is the lintel LENGTH?
RO + (trimmer thickness x2)
3 ways to frame wall junctions
1) L
2) U
3) ladder blocked between studs to join other wall
Can I start building walls when all have ready are studs?
No, make a cut list and create all your framing members first
Why are my lintel nails showing?
So inspectors can see them from inside the building
How do cap plate tie walls together?
Lap over top plates
What is important to do to a constructed wall before sheathing?
SQUARE IT
How do we prevent “Saskatchewan corners”?
Run sheet past the same width as the wall so it overlaps the end of the joining wall
Quickest way to cut an RO out of sheathing
Router
Roof layout off a ladder?
Do it on the floor before standing a wall
When to use vapour barrier?
Hot to cold
How to straighten walls
String line
Leave wall braces until roof is sheeted?
Yes
Strongest bracing angle
45deg
Max notch size
1/3 material load bearing
Leave 40mm material non-load bearing
Fire stop required for 2m wall?
No, need it at 3m (10’) walls or greater
Do I need poly on my top floor walls where they meet the ceiling?
Yes since the roof/attic space is cold compared to the warm room
Can my framing touch my Chimney?
NO WOOD NEAR FIRE THAT YOU DONT WANT BURNED
