Chapter 7

Question 1

What are the six types of wood framed construction.

Answer 1

Log Cabin
Post and Frame
Balloon Frame
Platform Frame
Plank and Beam
Truss Frame

Question 2

Balloon frame construction started in ___.

Answer 2

1833

Question 3

___ stories are typically the limit for platform-frame construction.

Answer 3

3 stories

Question 4

There is one common vertical means of fire spread in both balloon frame and platform frame buildings: the ___.

Answer 4

Open stairwell

Question 5

Floor joists in platform frame are usually spaced ___ or ___ inches on center.

Answer 5

16” or 24”

Question 6

Platform frame… wood walls, consisting of studs spaced ___ on center.

Answer 6

16”

Question 7

The Empire State building weighs ___ pounds per cubic foot.

Answer 7

23

Question 8

Modern high-rises weight as little as ___ pounds per cubic foot.

Answer 8

8

Question 9

Gusset plates, also known as gang nails, contain a series of small ___ inch teeth.

Answer 9

3/8”

Question 10

Truss roofs lack the ___ that is present in legacy construction.

Answer 10

Ridge pole

Question 11

CO… ___ ppm can be fatal after a few breaths.

Answer 11

12,500 ppm

Question 12

The flammability range of CO is from ___ to ___ %.

Answer 12

12.5% to 74%

Question 13

The ignition temp of CO is ___.

Answer 13

1,128°F

Question 14

Wooden I-beams are manufactured in lengths up to ___.

Answer 14

60 feet

Question 15

Recent tests of wooden I-beams have shown failure in just over ___ minutes.

Answer 15

6 minutes

Question 16

Fire stops typically limit ___ movement.

Answer 16

Vertical

Question 17

Fire stopping material may consist of at least ___ inch nominal lumber, two thicknesses of ___ inch nominal lumber with broken up lap joints, or ___ in plywood.

Answer 17

2 inch
1 inch
23/32”

Question 18

Draft stops, in contrast to fire stops, limit ___ movement.

Answer 18

Horizontal

Question 19

Draft stopping may consist of at least ___ gypsum board, ___ plywood, _____, or other approved materials, usually applied parallel to the main framing members.

Answer 19

1/2” gyp
3/8” ply
Sheet metal

Question 20

UL subjects pressure treated wood to a test for ___ instead of the usual 10 minutes.

Answer 20

30 min

Question 21

Construction in which plywood provides some of the structural strength of the building, particularly in providing resistance to shear stresses, is often described as ___ or ___.

Answer 21

“stressed skin”

“diaphragm”

Question 22

Plank like sections of nominal 2 inch boards are glued together under pressure to produce large arches, beams, girders, and columns… Such timbers are known as ___ or ___, a trade name.

Answer 22

Laminated timbers

“Glulam”

Question 23

___ is often a misused generic name for any low density fiberboard.

Answer 23

Celotex

Question 24

Plywood siding, sometimes referred to as ___ plywood, a trademark of the APE-Engineered Wood Association, is delivered in 4 foot wide sheets, side matched.

Answer 24

“T1-11”

Question 25

Longer, thicker shingles are called ___.

Answer 25

Shakes

Question 26

Siding… ___ can explode when heated.

Answer 26

Asbestos cement shingles

Question 27

Bricks laid with the ends showing are called ___. In a bearing wall, they can be seen usually every ___ rows.

Answer 27

Headers

Seventh