CH 7

Question 1

Dimensional lumber sizes

pg 182

Answer 1

available in lengths from 8-24 ft in 2ft increments

2x4= 1.5x3.5
4x4= 3.5x 3 9/16
6x6= 5.5x5 5/8
2x6= 1.5x5 5/8
2x8= 1.5x7.25

Question 2

solid wood facts

pg 183

Answer 2

useful tensile strength comparable to some kinds of steel on the basis of strength to unit weight

defects reduce strength

Question 3

standard tensile strength of wood

pg 183

Answer 3

700psi

Question 4

moisture content of standard structural lumbar

pg 183

Answer 4

19% or less

expressed in specific gravity

Question 5

wood strength and load direction

pg 183

Answer 5

stronger parallel to grain

compressive strength parallel 325-1700psi

Question 6

glue laminated beams

pg 184

Answer 6

range from 3/4-2inches thick

depths of 3-75 inches

lengths of up to 100ft

Question 7

glulam beams

pg 185

Answer 7

used in heavy timber construction

greater lengths

react to fire like solid timber

Question 8

SCL

pg 186

Answer 8

structural composite lumber

Question 9

LVL

pg 186

Answer 9

Laminated veneer lumber

sheets of veneer peeled from the outer portion of the log

laminated in parallel alignment

I joists and beam sections

1 3/4- 3 1/2 inches thick

Question 10

PSL

pg 186

Answer 10

Parallel strand lumber

veneers not as uniform as LVL

2-8ft in length

strongest of the three SCL products

Question 11

LSL

pg 186

Answer 11

laminated strand lumber

long strands up to 12 inches long

bonded with resin

short span beams and columns