Quiz 5

Question 1

The ends of floor joists shall bear a minimum of ____ on wood or metal.

Answer 1

1 1/2 inches

Question 2

Doubled joists under parallel bearing partitions that are separated to permit the installation of piping or vents shall be blocked at maximum intervals of ____ on center.

Answer 2

48 inches

Question 3

Where floor joists frame from opposite sides across the top of wood girder and are lapped, the minimum lap shall be _______.

Answer 3

3 inches

Question 4

Bridging shall be provided to support floor joists laterally where the minimum 2x joist depth exceeds __________.

Answer 4

12 inches

Question 5

What is the maximum permitted length of a notch in a floor joist?

Answer 5

1/3 the depth of the joist

Question 6

A hole bored through a floor joist shall have a maximum diameter of _________.

Answer 6

1/3 the depth of the joist

Question 7

Tail joists exceeding ________ in length shall be supported by framing anchors or on complying ledger strips.

Answer 7

12 feet

Question 8

Where wood structural panels are used for required draft stops in concealed floor/ceiling as lies, what is the minimum thickness mandated?

Answer 8

3/8 inch

Question 9

Where Species Group 2 sanded plywood is used as combination sub floor underlayment, what is the minimum required plywood thickness where the joists are spaced 16 inches on center?

Answer 9

5/8 inch

Question 10

In a steel floor framing system, No. 8 screws spaced at a maximum of ____ on center on the edges and ______ on center at the intermediate supports shall be used to fasten the sub-floor to the floor joists.

Answer 10

6 inches

12 inches