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Chapter 06 Flash Cards
Chapter 6 Gen Contracting: Rough Carpentry, Insulation, Drywall & Roofing
152
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Professional
05/30/2012

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Term
The minimum clearance from a masonry
fireplace to wood trimming members is:
Definition
2"
Term
The tirst two coats ot plaster must have a total
thickness of
Definition
1/2"
Term
Which is a finish-coat plaster?
Definition
Keene s cement
Term
What is the best way to attach a wall to a steel
beam?
Definition
Weld on Hangers
Term
Energy requirements specify 2X6 studs in ail
walls. True or False
Definition
False
Term
2X6 studs must be used when R-19 fiberglass
bats are used to obtain R-19 wall insulation.
True or False
Definition
True
Term
The phrase "dropping a stringer''
Definition
To allow for the thickness of the first tread.
Term
When working on a roof, what type of shoes
should you be wearing?
Definition
Composition (rubber-soled)
Term
A galvanized drip edge is applied;
Definition
Under the felt at the eave, over the felt at the
rake, and to the sheathing
Term
Portland cement is a roof covering. True or
False
Definition
False
Term
To cut wallboard, score the____side first and
then cut the other side.
Definition
Smooth
Term
What type of furnace is used in an attic or
crawl space?
Definition
Horizontal
Term
Unlined masonry chimneys must be at least
Definition
8"
Term
You may not use platform framing in
California. True or False.
Definition
False
Platform (Western) framing is common in
California.
Term
R-19 walls may be constructed by installing
wall sheathing on the outside of 2X4" studs
with R-11 between the studs. True or False.
Definition
True
Term
What is the best nail for drywall?
Definition
Rust-resistant
Term
An advantage of sheetrock screws is:
Definition
Better fastening strength
Term
Loose-fill insulation is best for older homes.
True or False
Definition
True
Term
A.fter a set of wood cabinets is delivered to a
jobsite, to prevent warping you should:
Definition
Leave inside and unwrapped but covered for 4-
5 days
Term
You should insulate:
Definition
Exterior walls and ceilings
All walls, ceilings, roofs, and floors that separate
heated from unheated spaces should be insulated.
Term
Which duct has the least resistant?
Definition
Round
Term
The proper type of furnace when ducts are in
concrete is:
Definition
Down flow
Term
Where should the vapor barrier be
installed?
Definition
Between insulation and interior wall
Term
, In terms of energy and cost efficiency, the best
roof for a building in a temperate climate is:
Definition
, In terms of energy and cost efficiency, the best
roof for a building in a temperate climate is:
Term
RC channel is used for:
Definition
Soundproofing
RC = resilient channel. It separates concrete block
from gypsum board for sound insulation. Mounted
on one side of the wall only.
Term
You should insulate heating ducts:
Definition
Everywhere
Term
For lateral stability for columns and beams
you need:
Definition
Bracing
Term
The primary disadvantage of polyurethane is:
Definition
Flammability
Term
What causes a valley to leak?
Definition
Valley not sealed
Since water runoff is concentrated in valleys, they are especially vulnerable to leakage, and must be
property flashed.
Term
The starter course for asphalt shingles should
have an overhang of:
Definition
3/4"
Term
The primary disadvantage of a direct drop of
concrete with a flat chute is:
Definition
Segregation
Term
If you have a large opening in joists due, for
example, to a fireplace or ehimney, the joists
and headers should be:
Definition
Doubled
Term
If floor joists can't handle a span by the size of
the joists alone, add:
Definition
Columns and piers
Term
If a beam extends beyond its support it is
called:
Definition
Cantilever
A Cantilever beam is supported only at one end.
Term
Before applying asphalt shingles, the first step
is:
Definition
Install eave drip flashing
Term
You cannot use plastic cement on wood
shingles because;
Definition
Wood will expand and force the cement off.
Term
What should you do prevent condensation
on a cold water line?
Definition
Insulate the line.
Term
Where must vou insulate in a new house?
Definition
The walls and ceiling.
Term
Among these sheathing materials:Particle board - Fiberboard - Gypsum - Wall board (or
drywall) - and Styrofoam, which one is the best
insulation and also helpful for installation?
Definition
Fiberboard
Term
What is the disadvantage of using styrofoam
for wall sheathing?
Definition
It adds no structural strength to the walls.
Term
Of sheet metal, iiberglass, polyurethane, and
brick, what type of insulation has the highest
R-value?
Definition
Polyurethane
Term
Among wood, brick, concrete, and aluminum
which one has the highest R-vaiue?
Definition
Wood
Term
What is the main limitation of Urethane foam
insulation?
Definition
It is flammable.
Term
What is the most preferred type of insulation
for all types of construction?
Definition
Fiberglass
Term
For an old house, or an existing structure,
what is the most common way to insulate?
Definition
R-25
Term
, When insulating under a floor with foil-faced
insulation, which direction would the vapor-
barrier face?
Definition
up, toward the living area.
Term
What is the best way to insulate heating and cooling ducts?
Definition
3 layers of insulation, loosely wrapped
Term
Sound control acoustical insulation is installed
in a manner similar to:
Definition
Thermal insulation
Term
What is the most efficient for sound control in
partitions?
Definition
Designed sound control watts.
Term
What is an outstanding advantage of acoustical
plaster over other acoustical material?
Definition
Fire resistance value.
Term
To be classified as energy efficient, south-
facing glazing must be:
Definition
At 22.5 degree from true south.
Term
. What type of glass allows the least amount of
cool air or warm air to escape (from the
structure)?
Definition
Double-glazed
Term
Thoroughly mixing I cubic yard of coarse
aggregate with V2 cubic yard of fine aggregate
will make approximately_____cubic yard of
material.
Definition
One cubic yard.
Term
What is the strongest type of aggregate?
Definition
Washed-river-run, or round-shape.
Term
What is the proper way to store sand?
Definition
On a hard base in moisture controlled area.
Term
What is the proper way to store pea gravel?
Definition
Build up in gradual horizontal layers on a hard
base.
Term
What is the proper way to store crushed rock?
Definition
Build up in gradual horizontal layers on a hard
base, or in vertical storage bins directly over
discharge.
Term
Which of the following retains heat the
longest: Air, water, rock, or sand?
Definition
Rock
Term
Why do you put the footing rebar and the
vertical rebar together in the same block cell?
Definition
To connect stem wall into footing.
Term
When hanging rebars in a form, when do you
set them?
Definition
Before pouring concrete.
Term
What is the purpose of tying rebar?
Definition
To hold them in place for concrete.
Term
The best precise for splicing rebar is:
Definition
Overlap the tied ends by a length that equals to
40 times of the diameter.
Term
It is usually specified that hooks in reinforcing
bars greater than 3/4" in diameter should be__________.
Definition
Hot bent
Term
On a steel frame structure, how are wooden
joist attached?
Definition
To a wooden nail board.
Term
When preparing to frame a wall, the first step
is to layout subfloor, and;
Definition
Mark the opening.
Term
When laying a subfloor, you should lay it in
relation to the joists in what way?
Definition
At right angles.
Term
What is the purpose of a cross-bridging in a
floor?
Definition
To stiffen the floor, and spread the load.
Term
A characteristic of post-and-beam construction
is:
Definition
Horizontal and vertical framing.
Term
The type of framing where the studs extend
from the sole plate to the roof plate is called:
Definition
A "Balloon" framing.
Term
How should you attach steel frame to a wall?
Definition
With lag bolts.
Term
[n good wood framing, all joists and rafters
should be framed with the crowning edges:
Definition
Up
Term
When putting posts to support beams, the posts
should be placed on__________.
Definition
Pedestals
Term
What is used to eliminate the lateral movement
of columns and beams?
Definition
Bracing
Term
The construction of a wall begins with:
Definition
The sole plate.
Term
What do you call a wall, or a partition that
support itself and a vertical load?
Definition
A bearing wall, or bearing partition.
Term
What is the portion of a wall that widens for a
short distance called?
Definition
A pilaster.
Term
What is the normal length of a drywall stud?
Definition
921/4"
Term
What is the common width of a drywall?
Definition
48"
Term
What type of nail should you use on drywall
boards?
Definition
Annular ring
Term
When installing drywall, an installer would be
most concern with:
Definition
Plumbing
Term
What is the advantage of screwing in
drywalls?
Definition
The drywall will be more secured.
Term
To cut wallboards, you should_______the
smooth side first, then cut the other side.
Definition
Score
Term
Drywall is the same as:
Definition
Wall board
Term
A sheetrock hammer face should be:
Definition
Convex
Term
Among plaster, sheetrock, stucco, and
greenboard (waterboard, which one is less
absorbent?
Definition
Greenboard
Term
What should be inspected before drywalls?
Definition
The rough plumbing, the insulation, and the
rough electrical wiring.
Term
What type of building paper is used between
the suds and the siding?
Definition
Vapor-resistant type.
Term
What should you use when cutting a small and
thin piece of material?
Definition
A push stick
Term
How many nails go into a header from a king
stud (not a metal stud)?
Definition
6 of#16 penny nails.
Term
Blunting the end of a nail to keep it from
splitting the wood is a common practice. What
is the negative aspect of this practice?
Definition
The nail will not hold as well.
Term
When nailing trim board, nails are driven:
Definition
straight in
Term
stringers are planks running the total length of
the stairway, and are notched to support the
treads and risers, true or false?
Definition
True
Term
Why do you "drop the stringer" on the bottom
step?
Definition
To compensate for the thickness of the first
step.
Term
A horizontal tie beam in a roof above the wall
plate is a:
Definition
Collar beam
Term
What is the purpose of a collar beam?
Definition
To connect 2 opposite rafters at a level above
the wall plat, and to support the weight of a
roof.
Term
A. roof that rise 12" per horizontal foot is:
Definition
A half-Ditch
Term
The surface of a cornice in a vertical position
is:
Definition
A fascia
Term
A roof formed of 4 straight sides, all sloping
up toward the center of the building,
terminating in a ridse, is commonly called a:
Definition
Hip roof
Term
The intersection of the gable roof and the
main roof is called:
Definition
The valley
Term
On a "Hip and Valley" roof, what caused the
valleys to leak?
Definition
Valleys not sealed (dubbed flashing)
Term
A "Roofing square" is the roofer's unit of
measure, and it equals to:
Definition
100 square feet
Term
In roofing language, "Felt" is actually:
Definition
Asphalt impregnated felt.
Term
Asphalt saturated (impregnated) felt is
eommonly used under_______shingles.
Definition
Asbestos
Term
When installing asphalt (composition)
shingles, what do you do first?
Definition
Roll out the felt.
Term
Is nailing required on a wood roof deck when
using a mechanical felt laying machine?
Definition
Yes
Term
What do you use to seal roll roofing?
Definition
Bituminous tar
Term
Red cedar shingles are manufactured on three
lengths, 16", 18" and 24" and each bundle
contains_______square feet.
Definition
25
Term
How many bundles of cedar shingles will
cover 100 sq.?
Definition
4 bundles
Term
When shingles are laid adjacent (next to eaeh
other), what are the laps (or overlaps) called?
Definition
exposures
Term
What is the most likely reason for a leak in the
valley?
Definition
Dubbed (poorly sealed) valley flashing.
Term
What's wrong with using plastic roof cement
on a wood roof?
Definition
Woods will soak up water, expand, and break
the seal.
Term
To tell if a roof vent is causing leaks, where
do you look for moisture?
Definition
Between the shingles and the paper.
Term
What is the purpose of a "cant strip"?
Definition
Protect the edges when rolling up curbs.
Term
What type of roof colors would you use in a
temperate zone?
Definition
Reflective
Term
Where is a cap and base used?
Definition
On the chimney.
Term
When doing a suspended channel ceiling,
what should be done first?
Definition
Determine the finished height of the new
ceiline.
Term
"Crossed-fiirring" is the term used to denote
furring members attached to the other
structural component to support lath in the_________.
Definition
Suspended ceilings.
Term
Which type of lath is least likely to cause
cracks in the plaster?
Definition
Expanded metal lath.
Term
A bundle of metal lath normally contain
_______square yards, or 10 sheet per bundle
at 18 square foot per sheet.
Definition
20
(10 sheets x 18 sq.ft.) ,9 = 20
(There are 9 square foot in a square yard.)
Term
Metal lath is normally used with it's long
dimension of the sheet in a_____position.
Definition
Horizontal
Term
What is the most common or best plaster
base?
Definition
Wire mesh or expanded metal lath.
Term
How is "key" in plaster obtained?
Definition
Basic ingredients: Gypsum or its products as a
binder.
Term
Plaster which is not mixed with sand or any
aggregate or water is called:
Definition
"neat" plaster
Term
Which plaster is the most fire resistant?
Definition
Neat plaster
Term
Portland cement plaster should not be placed
over gypsum lath, wood lath, or:
Definition
Fiber insulation lath.
Term
What do you add to the final decorative
plastering coat mix?
Definition
Color
Term
How many 8' x 3" boards are needed to cover
this attic wall?
Definition
60 boards
Term
What is the minimum ceiling height for any
room in dwelling or an apartment house,
measured from the finish floor to the finished
ceiling?
Definition
7'6"
Term
In addition to the "dead load", each floor of a
hotel, apartment house, or dwelling must be
constructed as to support safely a "live load" of
not less than____lbs. per square foot of floor
areas.
Definition
40 lbs.
Term
What is the minimum "live load" you must
build for, if a roof is 200 sq.' in area or less,
and has a pitch of less than 4 in 12 (4:12, or
1/3)?
Definition
20 Ibs./sq.'
Term
Each bedroom, or any room intended for
sleeping purpose in a welling shall have a
superficial floor area of not less than____
sq.'
Definition
70 sq.
Term
What is the minimum superficial floor area
must every kitchen in an apartment house or
dwelling have?
Definition
No minimum specified.
Term
Every HALLWAY in a hotel, apartment
house, or dwelling, there shall be a clear
ceiling height of___', measured from the
finished floor to the finished ceiling.
Definition
7'
Term
______plaster is applied over lath.
Definition
3-coat
Term
What is the first coat of plaster on three-coat
work commonly called?
Definition
The scratch coat.
Term
What is the second coat of plaster applied on
three-coat work commonly called?
Definition
The bond coat or brown coat.
Term
What is the third coat of plaster applied on
three-coat work commonly called?
Definition
The finished coat.
Term
Which coat is the hardest (most durable,
toughest) coat on plaster?
Definition
Gauging coat, or the finish coat.
Term
What is the minimum total thickness of the
first and second coat of plaster for 3-coat
Portland cement plaster work?
Definition
According to the UBC, it is 3/4".
Term
The recommended minimum thickness of
gypsum plaster, including finish coat, applied
over metal lath is:
Definition
5/8"
Term
How long should you wait between the
brown coat and finish coat?
Definition
7 days
Term
The final decorative coat of plaster is usually
mixed with_____plaster.
Definition
Color
Term
Prevent cracking due to shrinkage of the stud
with:
Definition
Expanded metal lath
Term
If you want to minimize flammability, use the
following as the plaster basecoat:
Definition
Wood-fibered plaster
Term
When insulation is blown into a wall, the hole
should be:
Definition
High on the wall
Term
When insulation is blown into a wall, the
diameter of the hole on the hole should be no
larger than:
Definition
3" It is recommended that the diameter of the hole be
no greater than 3 " and no less than 2 "
Term
The distance that adjacent shingles overlap
horizontally is called the:
Definition
Side lap
Term
Which is best for decorative finishing?
Definition
Finish-coat plasters (acoustical, molding,
etc..)
Term
Which type of flexible insulation has the
vapor barrier on one side only?
Definition
Faced
Term
The adhesion on rolled roofing should be:
Definition
Cold
Term
The height difference between a cantilevered
and an exposed roof rafter is____.
Definition
2"
Term
When insulating under a floor with foil-
faced insulation, which direction would the
vapor barrier face?
Definition
up, toward the living area.
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