5.
Refer to Table 1-1, page 1-6. You are required to determine the girder size for a specific building.
There are 14 units of floor area, and the total load per square foot is 80 pounds. What size girder (in
inches) is required?
A.
6x8
B.
6 x 10
C.
8 x 10
D.
8 x 12
6.
You know that floor joists are wooden members that make up the body of the floor frame and
sometimes must be doubled. Why is it necessary to double a floor joist?
A.
Because heavily concentrated loads must be supported.
B.
Because of the defective lumber you have to work with.
C.
Because of the extra long spans between foundation walls.
D.
Because of a weak floor.
7.
What is the strongest method for installing floor joists?
A.
Joists resting upon sills and girders
B.
Joists installed with ledger boards
C.
Joists installed using metal hangers
D.
Joists installed with metal hangers and 16d nails
8.
Why is bridging used when constructing the floor system?
A.
To
strengthen the weak parts of the subfloor.
B.
To
allow equal weight to be distributed across the girder.
C.
To
stiffen the floor frame.
D.
To
add strength to the joist hangers.
9.
How is cross bridging installed in a floor system?
A.
The top of the cross bridging is nailed to the top of the floor joist before the subfloor is
installed. The bottom of the bridging is nailed in place after the subfloor is installed.
B.
The bottom of the cross bridging is nailed to the floor joists. Next, the top of the bridging is
nailed to the top of the floor joists, then the subfloor is installed.
C.
The subfloor is installed. Next, the bridging is measured, marked, cut, and nailed in place
from beneath the floor.
D.
Before the subfloor is installed, the top and bottom of the bridging is installed.
EN5156
1-24
Previous Page
