Residential Floor Frames Flashcards
The main disadvantage of platform framing system is the potential for ____ at every floor level.
Shrinkage
Bridging or strapping placement needed when joist span greater than _____ m.
2.1 m
All solid wood joists require ____ minimum end bearing.
38 mm
The maximum projection of joists beyond a beam is ______.
150 mm
Joist hangers are required by code for double header joists supported by double trimmer joists. T or F
False
When are double trimmers required around an opening?
When the header is 800 mm +
When are double headers required around an opening?
1.2 m
Name two framing styles other than platform framing.
Balloon and Post-and-Beam
If a non load bearing wall runs parallel to the main joists, what must be installed below it?
A beam or load bearing wall
The required clearance between a floor joist and a masonry chimney that is within the building walls is _____ mm.
50 mm
Fireplace clearance to combustion material - interior: _____ mm. Exterior: _____ mm.
Interior: 100 mm (4”)
Exterior: 50 mm (2”
Greatest concern for wood floor system?
Shrinkage
Minimum joist bearing?
38 mm
Minimum beam bearing ____?
89 mm
For a plumbing wall, blocking should be ______ o.c. Maximum.
1.2 m
2x8 floor joists only supporting roof loads can be cantilevered ____ mm beyond their support.
However, 2x10 joists can be cantilevered ____ beyond their support.
400 mm
600m
Cantilever ratio back to double header is?
1:6
What is balloon framing?
What are the advantages?
The wall studs are continuous from the sill plate on foundation to the top of the wall at the roof
Little or no shrinkage
When joists are lapped on a beam the maximum recommended length of lap is _____ mm.
300 mm
The sill system requires a minimum of 2x4 lumber for the sill. T or F
T
If header joist exceeds _____mm, an engineers design is required.
3200 mm
If load bearing walls to right angle of joists only support roof and ceiling loads then they should be located no more than ____ from the joist support.
900 mm
Joist restraint must not be more than _____ from supports or other rows of bridging.
2.1 m
If joist slam is greater than 2.1 m a row of joist restraint is required at the centre of span. T or F
T
If a joist is over _____ mm then two rows of bridging are required.
4.2 m
Subfloor sheathing should be nailed ____ from the panel edges and ____ at intermediate supports.
150 mm
300 mm
Engineered floor components must be stored how?
Vertical position
