BCT 219 Cabinetmaking I
Assignment 1-B
AWI Chapter 100
Lumber Standards
1.
List the finished thickness’ of the following nominal rough lumber thickness’:
Rough Thickness
4/4
Finished Thickness
_______ 3/4
5/4
_______ 1
6/4
_______ 1 1/4
8/4
_______ 1 1/2
10/4
_______ 2
12/4
_______ 2 1/2
2. AWI standards allow you to glue up 2 - 3/8 thick pieces of lumber to acquire 3/4 thick lumber.
True
False
3.
How many natural characteristics would be allowed in a piece of grade 1 white ash lumber
measuring
12 96? _______ 4
4.
Substitute White Oak in question 3 and determine the number of natural characteristics allowed.
_______ 3
5. What is the maximum practical length of the following hardwood lumber:
Quarter sawn red oak _______________ 8-10
Walnut _______________ 7-10
Maple ________________ 11-0
Fir _______________ 15-8
6.
What is the optimum moisture content of wood used in finished woodworking in Portland Oregon?
______________ 8%
7.
What range of interior relative humidity is necessary to keep the moisture content of architectural
woodwork at its optimum value in Portland Oregon? _____________________ 25%-55%
8.
At 75 what relative humidity is necessary to maintain an 8.5% moisture content in wood?
_____________________45.8% 47 - 44 = 3, 8.7 - 8.2 = .5, 3/.5 = x/.2, x = 1.2 47 - 1.2 = 45.8