What is purpose of Insulation
Stop heat transfer, stop sound transmission
What are 3 methods of heat transfer
Conduction, convection, radiation
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how does hea...
What is a CMU made out of? - ANSWER- Portland Cement
Water
Fine aggregates
Admixtures
How heavy is a Standard Weight CMU? - ANSWER- 45 Lbs
How heavy is a Light Weight CMU? - ANSWER- 25 Lbs
Can light weight CMU be used underground? - ANSWER- No, only heavy weight
CMU can be used underground level
What is the difference between Type 1 and Type 2 CMU? - ANSWER- Type 1 is
M.C. controlled
Type 2 is not restricted to M.C.
What is the best grade of CMU? - ANSWER- N- Suitable for general use - exterior
wall
Above or below grade
What does the R-value mean? - ANSWER- R-Values- Resistant to heat transfer
(Gain or Loss) Higher R-value is better
Weathering grades name them. SW, NW, NW, FBX, FBS - ANSWER- SW- Severe
weather
MW- Moderate Weather
NW- negligible weather
FBX
Best quality- size/ shape uniform, narrow color range
FBS
Wide range of colors, greater size variation
, What are the pros of Exterior Plywood, and what quality grade? - ANSWER-
Exterior
Waterproof glue
Only 'C' grade veneer and better
What is the pros of Interior Plywood, and what grade? - ANSWER- Interior
'D' grade and better veneer
2 levels of exposure w/in the interior
Exposure 1 - waterproof
Exposure 2 - water resistant
What are the grades of plywood? - ANSWER- N- Neutral
A
B
C- Pugged
C
D
Composite S1S vs S2S - ANSWER- S1S Smooth one side
S2S - Smooth two side
Non-veneered advantages? - ANSWER- Advantages
No warp- expansion/construction- no pattern
OBS advantages? - ANSWER- No warp- mp grain pattern
No core
No knots
No patches
Moisture resistant
5 most common roofs? - ANSWER- Gable, Hip, Mansard, Gambrel, Dormer
Steep Roof slope? - ANSWER- Slope and greater
Low roof slope? - ANSWER- Slopes less than
How to calculate pitch of a roof? - ANSWER- Rise / 2 times run
How much is a square of underlayment? - ANSWER- 100 sq/ft
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