C17 - Glazing Contractor Test 3
steel reinforcing clip
What should be done when you must replace a window and the opening is not square and plumb?
use shims
If the opening is out of square, you must fabricate the new frame to be square and fit within the
smallest dimensions of the opening. Shims are used on the bottom and sides to hold the new frame in
place, level and plumb.
Brainpower
Read More
slip stick
How many movers will it take to carry a piece of glass that measures 120 inches × 150 inches and is
1/8-inch thick if each mover can carry 75 pounds?
three
One square foot of glass 1/8-inch thick is approximately 1.64 pounds. 120 inches × 150 inches = 18,000
square inches. 18,000 square inches ÷ 144 square inches/square foot = 125 square feet. 125 square feet
× 1.64 pounds/square foot = 205 pounds.205 pounds ÷ 75 pounds/mover = 2.73 movers which is
rounded up to 3 movers.
Framing anchors shall provide for _____ adjustment to accommodate fabrication and construction
tolerances.
3-way
What is the most likely reason glass will break in heat?
the glass is fixed too tightly in the frame
Glass will expand when exposed to heat. If the frame is too tight, the glass is unable to expand and will
break when the edge of the glass is unable to expand farther into the frame. Glass will also break when
,there is uneven thermal expansion: one section heats up and expands while an adjacent section of the
same piece does not. This sets up stresses within the glass, which causes it to break.
What is the minimum size to a sliding glass door with a sidelite?
36-inch sliding door with a 36-inch sidelite
Accessibility standards require doors to have a clear opening of at least 32 inches provided by a standard
6-foot wide sliding patio door assembly
What is indicated by the arrows I and J in Figure 3? pivot hangs
Which of the following is MOST important when considering using a heavy door in a storefront
system?
Pivot hinges
Where do you connect a safety harness?
back shoulder
A body harness should be attached to the lanyard at the center of the wearer's back near shoulder level,
or above the wearer's head. The attachment point of a body belt is located in the center of the wearer's
back.
How much weight can a heavy-duty ladder safely hold?
250 pounds
What kind of glass do you use in a 3/4 fire door?
wired
Fire-rated doors are exempt from the Safety Glazing requirement and may be glazed with wired glass
"as limited by the Code." A 3/4-hour fire door is allowed a maximum 1,296 square inches (9 square feet)
area of opening. You should note that there are other products on the market, such as ceramic glass,
that carry a fire rating and can be used. There is also filmed or laminated wired or ceramic glass that has
both a fire and impact safety rating.
What is the stationary and active method of an OOX patio sliding door?
stationary, stationary, active
O is generally used to indicate a fixed (non-moving) panel. "X" is generally used to indicate a sliding
panel.
, water deflector
What kind of glass do you use for a fireplace cover?
safety glass
The Code does not directly address fireplace covers, but does require safety glazing where: 1. the
exposed area of an individual pane is greater than 9 square feet 2. the exposed bottom edge is less than
18 inches above the floor 3. the exposed top edge is greater than 36 inches above the floor and 4. one
or more walking surfaces is within 36 inches horizontally of the plane of the glazing. Not all fireplaces
are going to meet all of these requirements, but because of the location, it is prudent to install safety
glass.
What is involved when glass is etched?
acid wash
plate glass lifter
65 failed insulated units are being replaced and the cost of each unit is $89 and there is 8 percent sales
tax. What is the cost of labor if each unit takes two working hours and the cost is $90 per working
hour?
$12,000
65 units × 2 hours/unit = 130 hours 130 hours × $90/hour = $11,700. Round up to $12,000 Labor is not
generally subject to sales tax
What is the best thing to do when you discover asbestos while removing an old window?
stop work
Section 25914.2(c) of the California Health and Safety Code states: "In the event the contractor
encounters on the site materials he or she reasonably believes to be asbestos or a hazardous substance,
and the asbestos or hazardous substance has not been rendered harmless, the contractor may continue
work in unaffected areas reasonably believed safe, and shall immediately cease work on the area
affected and report the condition to the owner, or the owner's representative, or architect in writing."
steel reinforcing clip
What should be done when you must replace a window and the opening is not square and plumb?
use shims
If the opening is out of square, you must fabricate the new frame to be square and fit within the
smallest dimensions of the opening. Shims are used on the bottom and sides to hold the new frame in
place, level and plumb.
Brainpower
Read More
slip stick
How many movers will it take to carry a piece of glass that measures 120 inches × 150 inches and is
1/8-inch thick if each mover can carry 75 pounds?
three
One square foot of glass 1/8-inch thick is approximately 1.64 pounds. 120 inches × 150 inches = 18,000
square inches. 18,000 square inches ÷ 144 square inches/square foot = 125 square feet. 125 square feet
× 1.64 pounds/square foot = 205 pounds.205 pounds ÷ 75 pounds/mover = 2.73 movers which is
rounded up to 3 movers.
Framing anchors shall provide for _____ adjustment to accommodate fabrication and construction
tolerances.
3-way
What is the most likely reason glass will break in heat?
the glass is fixed too tightly in the frame
Glass will expand when exposed to heat. If the frame is too tight, the glass is unable to expand and will
break when the edge of the glass is unable to expand farther into the frame. Glass will also break when
,there is uneven thermal expansion: one section heats up and expands while an adjacent section of the
same piece does not. This sets up stresses within the glass, which causes it to break.
What is the minimum size to a sliding glass door with a sidelite?
36-inch sliding door with a 36-inch sidelite
Accessibility standards require doors to have a clear opening of at least 32 inches provided by a standard
6-foot wide sliding patio door assembly
What is indicated by the arrows I and J in Figure 3? pivot hangs
Which of the following is MOST important when considering using a heavy door in a storefront
system?
Pivot hinges
Where do you connect a safety harness?
back shoulder
A body harness should be attached to the lanyard at the center of the wearer's back near shoulder level,
or above the wearer's head. The attachment point of a body belt is located in the center of the wearer's
back.
How much weight can a heavy-duty ladder safely hold?
250 pounds
What kind of glass do you use in a 3/4 fire door?
wired
Fire-rated doors are exempt from the Safety Glazing requirement and may be glazed with wired glass
"as limited by the Code." A 3/4-hour fire door is allowed a maximum 1,296 square inches (9 square feet)
area of opening. You should note that there are other products on the market, such as ceramic glass,
that carry a fire rating and can be used. There is also filmed or laminated wired or ceramic glass that has
both a fire and impact safety rating.
What is the stationary and active method of an OOX patio sliding door?
stationary, stationary, active
O is generally used to indicate a fixed (non-moving) panel. "X" is generally used to indicate a sliding
panel.
, water deflector
What kind of glass do you use for a fireplace cover?
safety glass
The Code does not directly address fireplace covers, but does require safety glazing where: 1. the
exposed area of an individual pane is greater than 9 square feet 2. the exposed bottom edge is less than
18 inches above the floor 3. the exposed top edge is greater than 36 inches above the floor and 4. one
or more walking surfaces is within 36 inches horizontally of the plane of the glazing. Not all fireplaces
are going to meet all of these requirements, but because of the location, it is prudent to install safety
glass.
What is involved when glass is etched?
acid wash
plate glass lifter
65 failed insulated units are being replaced and the cost of each unit is $89 and there is 8 percent sales
tax. What is the cost of labor if each unit takes two working hours and the cost is $90 per working
hour?
$12,000
65 units × 2 hours/unit = 130 hours 130 hours × $90/hour = $11,700. Round up to $12,000 Labor is not
generally subject to sales tax
What is the best thing to do when you discover asbestos while removing an old window?
stop work
Section 25914.2(c) of the California Health and Safety Code states: "In the event the contractor
encounters on the site materials he or she reasonably believes to be asbestos or a hazardous substance,
and the asbestos or hazardous substance has not been rendered harmless, the contractor may continue
work in unaffected areas reasonably believed safe, and shall immediately cease work on the area
affected and report the condition to the owner, or the owner's representative, or architect in writing."
