Deck 27: Floor Systems and Foundation Support

Question 1

A concrete slab is often used for the floor system of residences in warm, dry climates.

Answer 1

True

Question 2

When concrete construction must be interrupted, a ____is used to provide a clean surface where work can be resumed.

A) construction joint
B) wire mesh
C) girder
D) expansion joint

Answer 2

A

Question 3

The crawl space is the area formed between the floor system and the ground.

Answer 3

True

Question 4

When a slab is placed on more than 4" (100 mm) of uncompacted fill, _____ should be specified to help the slab resist cracking.

A) a vapor barrier
B) gussets
C) flanges
D) welded wire fabric

Question 5

The floor slab can be poured as an extension of the foundation wall and footing, in what is referred to as monolithic construction.

Question 6

A _____ is used to provide support for floor joists and the subfloor when they intersect the concrete.

A) flange
B) ledger
C) open-web truss
D) control joint

Question 7

Which of these are used to span between the foundation walls?

A) floor joists
B) purlins
C) rebar
D) complex beams

Question 8

The post-and-beam floor system is a popular floor framing choice for _____.

A) building sites on coastlines
B) building sites in hot, dry climates
C) steep building sites
D) flat building sites

Question 9

Slabs built above grade are most commonly used in basements.

Question 10

Friction between the slab and the soil causes cracking, which can be controlled by a(n) ____.

A) steel girder
B) expansion joint
C) contraction joint
D) anchor bolt

Question 11

Concrete slabs can often be poured over unstable soil by using a method of reinforcement known as ____.

A) grading
B) post-tensioning
C) slab insulation
D) metal flashing

Question 12

Which of these components should be shown on a slab foundation plan?

A) concrete strength
B) pier sizes
C) changes in floor level
D) insulation

Question 13

A ____ is a horizontal load-bearing member that spans between two or more supports at the foundation level.

A) rebar
B) purlin
C) girder
D) joist

Question 14

When a municipality requires a concrete slab to be insulated to prevent heat loss, the insulation must always be placed on top of the slab.

Question 15

Which of these components should be specified by note only?

A) mudsill size
B) exterior footings
C) floor joists
D) door openings in foundation walls