Beams and Columns

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25 Νοε 2013 (πριν από 3 χρόνια και 7 μήνες)

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Beams and Columns

Beams (Girder)


Supports floor joists


Placed in cut
-
outs in the foundation wall


Height
-

usually top of beam is flush with the
top of the sill plate


1/2” of clearance between the beam and the
foundation for air circulation (decay) and
expansion & contraction


at least 4” of beam sitting on foundation


number of beams depends on the layout or
style of the home


Considerations

o

cost

o

ceiling height

o

span necessary


Types

o

steel




most common



little expansion and contraction
which leads to less cra
cking



not as big as a wooden beam so
provides greater headroom

o

Wooden



some are solid



mostly built up layers of 2 x 10 or

2 x 12, at least 3 wide


Size


found in building code


Bearing Beam supports a wall above


Non
-
bearing Beam supports live & dead
loads
above


Layout is the same as ring board, joists

Posts


Supports
the
beam


Steel

adjustable

telescopic jacks


Concrete


poured or block


Wooden


solid or laminated