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CET 1213 Intro to Construction - Exam 2 Study Set fully solved
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CET 1213 Intro to Construction - Exam 2 Study Set fully solved
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CET 1213 Intro to Construction - Exam 2Study Set fully solved
Plan Reading - What is the industry standard for labeling architectural and engineering building prints? -
correct answer ✔✔CSI Masterformat
Plan Reading - Where are detailed instructions and descriptions shown on building prints? - correct
answer ✔✔In the notes area at the top or bottom corner.
Wood - The heartwood of a living tree is ________ wood. - correct answer ✔✔Dead
Wood - The sapwood of a living tree is _________ wood. - correct answer ✔✔Alive / living
Wood - What is the very center of a tree called? - correct answer ✔✔Pith = the very first growth ring.
Wood - Which growth rings of a tree are alive? - correct answer ✔✔The living growth rings within a tree
include:
1. Inner bark
2. Cambian layer = source of new cells
3. Sapwood layers = store and transport nutrients
Wood - How does building with wood help lower greenhouse gases? - correct answer ✔✔Wood lumber:
1. Absorbs (sequesters) carbon
2. Avoids metals and concrete, which require more energy to make
Wood - Which growth rings of a tree are dead? - correct answer ✔✔The dead growth rings of a tree are:
1. Outer bark
2. Heartwood layers = provide structural strength
,Wood - What is Summerwood vs Springwood? - correct answer ✔✔Springwood grows faster (in the
Spring season) than Summerwood, which grows slower in the Summer due to the heat.
Wood - Summerwood is ( stronger /stiffer or weaker / more flexible ) than Springwood - correct answer
✔✔Stronger and stiffer - because trees grow slower in the summer and so their density is higher in
those layers since cells have time to mature.
Wood - Which are the 3 types of tree cuts for lumber? - correct answer ✔✔1. Plainsawn (aka Flatsawn) =
parallel to growth rings
2. Quartersawn (aka Edgesawn) = perpendicular to growth rings
3. Riftsawn = radial to growth rings
Wood - Which tree cut is most costly due to tree waste? - correct answer ✔✔Riftsawn is the most
wasteful because each cut is radial (toward the center) leaving wasted wood between cuts.
Wood - What is Plainsawn wood? - correct answer ✔✔Plainsawn (aka Flatsawn) lumber is wood cut with
the growth rings parallel to the wider face of the board. Easy to see the rings.
Wood - What is quartersawn lumber? - correct answer ✔✔Quartersawn lumber (aka Edgesawn) is wood
cut with the growth rings perpendicular to the wider face of the board.
Wood - Which tree cut is less costly? - correct answer ✔✔Plainsawn (aka Flatsawn) is easier (most
efficient) and least costly to cut compared to quartersawn and riftsawn cuts.
Wood - Which tree cut is most difficult and costly? - correct answer ✔✔Riftsawn is most difficult (least
efficient) and costly, and Quartersawn (aka Edgesawn) is in the middle.
Wood - What is "seasoning" of wood lumber? - correct answer ✔✔After lumber is sawn, it is seasoned
(dried), either in air or in kilns.
Seasoned lumber is lighter (due to less moisture content), stronger and stiffer than green (unseasoned)
lumber.
,Wood - Which is stronger and stiffer - seasoned or unseasoned lumber? - correct answer ✔✔Seasoned
lumber is stronger and stiffer because it has less moisture content. Moisture makes wood more flexible
and easier to bend.
Wood - Why is seasoning wood lumber important? - correct answer ✔✔Drying the wood reduces its
moisture content. Decay causing fungi cannot survive in dried wood with a moisture content (MC) below
~20%. Drying wood also makes it stronger and stiffer.
Wood - Which tree cut is most likely to lead to distorted lumber shapes (e.g., twisting, cupping, waning,
etc)? - correct answer ✔✔Plainsawn (aka Flatsawn) tree cuts lead to the most lumber distortion,
because of their difference between tangential and radial shrinkage.
Wood - How are the surface of lumber made smooth? - correct answer ✔✔Surfacing lumber on 2 (S2S)
or 4 sides (S4S) makes the sides smooth.
Surfacing wood while it's still green (wet / unseasoned) is easier and cheaper to cut, but risk of distortion
is higher.
Wood - How much is one Board-Foot of lumber? - correct answer ✔✔One board-foot is 12 square inches
of nominal cross section for every foot of length.
10' of 2x4 = (2x4)/12 x 10 = 20/3 = 6.67 board feet
Wood - Veneers are used to _________ lesser quality wood beneath. - correct answer ✔✔Veneer = use
laminated panels to cover cheaper wood (e.g., plywood or OSB).
Wood - Manufactured wood products are typically stronger / weaker than natural wood products. -
correct answer ✔✔Stronger - Manufactured wood products (e.g., plywood and OSB) are typically
stronger than natural wood, because they have cross-laid layers or fibers in alternate directions.
Wood - Joists are frequently made of OSB (manufactured wood) for the web section - true / false -
correct answer ✔✔True - I-joists are frequently made of an OSB web with actual wood flanges.
Wood - Lumber cannot be made of plastic due to its low strength - true / false - correct answer ✔✔False
- Wood Plastic Composites (WPC) is often used for decking and trim outside.
, Wood - How is plywood made? - correct answer ✔✔Plywood is made from laminated softwood veneers.
Wood - A 2x4 has 2" thickness and 4" width - true / false - correct answer ✔✔False = lumber is listed by
its "nominal" dimensions (i.e., rounding to the next whole number). A 2 x 4 = Actual size of 1½" x 3½".
Wood - Wood (lumber) that has been treated with pentachlorophenol can be painted - true/false? -
correct answer ✔✔False - because pentachlorophenol is an oil that seeps out of the wood and so paint
will not adhere so well.
Wood - Are box nails and common nails interchangeable in construction practices? - correct answer
✔✔No - because common nails have larger shanks and heads, which make them stronger and more
resistant to popping out.
Wood - When should you use box nails over common nails? - correct answer ✔✔Since box nails are
thinner than common nails (aka Penny nail), you should use box nails when concerned about splitting
the wood.
Wood - What is a sinker nail? - correct answer ✔✔A sinker nail is thinner than a common nail, coated
with adhesive to enhance holding power, with a funnel-shaped head, and a grid stamped on the top of
the head.
Wood - Do sinker nails have the same length as the same numerical size penny nail? - correct answer
✔✔No - sinker nails are shorter than penny nails (aka Common nails) of the same numerical size listed.
So a 9d penny nail will be longer than a 9d sinker nail.
Wood - Describe the 3 different nailing options when framing with wood. - correct answer ✔✔Face
nailing: loadbearing = 2 wood pieces face each other
End nailing: positional only = 2 wood pieces make a "T"
Toe nailing: loadbearing, but weaker than face nailing = angle
Wood - What are sheet metal joist hangers used for? - correct answer ✔✔To make a stronger connection
wherever wood joists (regular and I-beam joists) bear on one another at right angles.
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