What is the main purpose of ceiling joists? - ANSWER Ceiling joists tie the
exterior walls together
How should ceiling joists be fastened to wall plates? - ANSWER The ceiling
joists must be toenailed to the wall plate with two 82mm (3 1/4") long nails
Identify 3 ways in which ceiling joists can meet on top of the interior bearing
wall. - ANSWER 1. Butted and cleated together
2. Lapped
3. Lapped with blocking between them that is the same thickness as the rafters
How is joist layout affected when joists are lapped over an interior wall? -
ANSWER The layout on one exterior wall will be offset by the thickness of the
ceiling joists
What must be done to the outside ends of ceiling joists? - ANSWER The joists
need an angled cut that matches the roof slope
What are stub joists? - ANSWER Stub joists are short ceiling joists that run at
90 degrees to the regular joists. They are used on buildings with hip roofs,
where the regular joists would interfere with the rafters
According the the National Building Code, what is the minimum size of an attic
access required for a single family home? - ANSWER The minimum size for
, an attic access in a single family home is .32m squared with no dimension less
than 500 mm (20")
What must be done to the joists if an opening in the ceiling is wider than two
joist spacings? - ANSWER The ceiling joists must be doubled on either side of
an opening that is wider than two joist spacings
Where would you find a flush beam required? - ANSWER A flush beam
would be required in an area in which no interior bearing wall available to
support the ceiling joists and the width of the building exceeds the maximum
allowable span of the joists.
What is a strongback? - ANSWER A strongback is an L shaped framing
member that is fastened to the tops of the ceiling joists. The strongback stiffens
the joists, reduces the deflection and maintains proper on-centre spacing.
What is the maximum span for ceiling joists that are 38 mm x 235 #1 grade
Western Hemlock material and spaced 600 mm on-centre - ANSWER The
maximum span for these ceiling joists is 6.85
What is a trussed rafter - ANSWER a pre-assembled unit built to form the
shape of a desired roof style
What distances can modern trusses span without the installation of intermediate
load-bearing partition walls? - ANSWER Spans in excess of 18m (60 feet) are
possible
How do increased spans affect the interior design of a building - ANSWER
Increased truss spans provide greater freedom in design and allow the inclusion
exterior walls together
How should ceiling joists be fastened to wall plates? - ANSWER The ceiling
joists must be toenailed to the wall plate with two 82mm (3 1/4") long nails
Identify 3 ways in which ceiling joists can meet on top of the interior bearing
wall. - ANSWER 1. Butted and cleated together
2. Lapped
3. Lapped with blocking between them that is the same thickness as the rafters
How is joist layout affected when joists are lapped over an interior wall? -
ANSWER The layout on one exterior wall will be offset by the thickness of the
ceiling joists
What must be done to the outside ends of ceiling joists? - ANSWER The joists
need an angled cut that matches the roof slope
What are stub joists? - ANSWER Stub joists are short ceiling joists that run at
90 degrees to the regular joists. They are used on buildings with hip roofs,
where the regular joists would interfere with the rafters
According the the National Building Code, what is the minimum size of an attic
access required for a single family home? - ANSWER The minimum size for
, an attic access in a single family home is .32m squared with no dimension less
than 500 mm (20")
What must be done to the joists if an opening in the ceiling is wider than two
joist spacings? - ANSWER The ceiling joists must be doubled on either side of
an opening that is wider than two joist spacings
Where would you find a flush beam required? - ANSWER A flush beam
would be required in an area in which no interior bearing wall available to
support the ceiling joists and the width of the building exceeds the maximum
allowable span of the joists.
What is a strongback? - ANSWER A strongback is an L shaped framing
member that is fastened to the tops of the ceiling joists. The strongback stiffens
the joists, reduces the deflection and maintains proper on-centre spacing.
What is the maximum span for ceiling joists that are 38 mm x 235 #1 grade
Western Hemlock material and spaced 600 mm on-centre - ANSWER The
maximum span for these ceiling joists is 6.85
What is a trussed rafter - ANSWER a pre-assembled unit built to form the
shape of a desired roof style
What distances can modern trusses span without the installation of intermediate
load-bearing partition walls? - ANSWER Spans in excess of 18m (60 feet) are
possible
How do increased spans affect the interior design of a building - ANSWER
Increased truss spans provide greater freedom in design and allow the inclusion
