Blue Book Chapter Five

Question 1

The main point to remember in the performance of wood as a structural member is the ____

Answer 1

surface to mass ratio.

Question 2

____ is the key factor in fire performance of wood.

Answer 2

Mass

Question 3

The second most important point to remember in wood-frame construction is ___.

Answer 3

the connection method.

Question 4

Platform frame is sometimes referred to as ___.

Answer 4

western framing

Question 5

____ is the most common type of new frame construction in use today.

Answer 5

Platform Frame

Question 6

In platform frame structures, the wall studs are attached to a single board on the bottom called the ___.

Answer 6

sill plate

Question 7

Platform frame can be ___ stories high.

Answer 7

Three

Question 8

A barn typically uses what framing system?

Answer 8

Post and beam

Question 9

In post and beam framing, the beams are __ x __ and can be set how far apart?

Answer 9

4x4 (Minimum 2” on roof planks)

6-8 ft apart

Question 10

___ is a larger version of post and beam.

Answer 10

plank and beam

Question 11

Where can plank roofing be seen typically?

Answer 11

churches and assembly halls

Question 12

What framing method is used in the wall construction of a typical truss frame home?

Answer 12

platform frame

Question 13

Truss Frame can be how many stories?

Answer 13

Three

Question 14

Gusset plates are how thick?

Answer 14

.05”

Question 15

What type of truss is the bowstring?

Answer 15

Timber Truss

Question 16

Bowstring trusses can span how far?

Answer 16

50-100’ and spaced 20’ on center.

Question 17

The weak link in any construction method is ___.

Answer 17

how structural members are connected.

Question 18

Gusset plates penetrate wood ___ inches.

Answer 18

.25” - .375”

Question 19

Years ago to resist moisture, insects, and fire they applied ___ and ___; which deteriorates and makes the wood brittle.

Answer 19

phosphates and sulfates

Question 20

How thick are the floors in IV construction?

Answer 20

3” or greater.

Question 21

Large sections of wood more than ___ inches thick can have more fire resistance than exposed steel.

Answer 21

6 inches thick

Question 22

What are the roof, floors, and walls in Type III construction made of?

Answer 22

Roof - wood
Floors - wood
Walls - Masonry load bearing

Question 23

The thickness of walls in Type III construction can be how thick? How tall are these buildings?

Answer 23

6”-30”

Up to three stories typically, have been up to 10 stories.

Question 24

Type III floor and roof joists may have fire cut joists at what angle?

Answer 24

30 degree angle

Question 25

Type I Spreaders run which direction?

Answer 25

parallel to the joists, ties the walls together

Question 26

Type II spreaders run which direction?

Answer 26

Perpendicular to the floor joists and tie the first 3 or 4 together.

Question 27

Type II construction uses what method for building the roof?

Answer 27

Metal decking on metal trusses.

Question 28

Steel expands one inch for every 10’ at ___ degrees.

Answer 28

800 degrees

Question 29

Type I construction are constructed typically with what materials for the floor and roof?

Answer 29

Reinforced concrete and steel bar joists for floors and roof.

Question 30

In truss construction, the top board is ___ and the bottom board is ___. They are called the ___.

Answer 30

Top - compressed
Bottom - tension
Chords

Question 31

Trusses are tied together with ___.

Answer 31

Ties

Question 32

Truss connections are ___ points.

Answer 32

panel

Question 33

The most common truss roof construction is ___.

Answer 33

peaked roof truss

16” - 24” on center

Question 34

____ truss is used for both roofs and floors.

Answer 34

Parallel chord

Question 35

Type II construction typically uses what type of truss?

Answer 35

All steel.

Question 36

What is the main problem with parallel chord trusses?

Answer 36

Interstitial Space

Question 37

The shortcoming of truss construction is ___.

Answer 37

The connectors

Question 38

In unprotected steel trusses, the steel can begin to lose strength at ___ degrees and fail around ___ degrees.

Answer 38

lose strength at 800 degrees

fail at 1000 degrees

Question 39

What two things have helped the building industry span larger open distances with load-bearing ability, and at a lower cost?

Answer 39

Laminated Beams

Engineered I - Beams

Question 40

What are the top and bottom boards on an engineered I-Beam referred to as?

Answer 40

Flanges