IEC 203
What is R-Value?
measure of thermal resistance
Which material is more common today for structural support?
metal
Which material is most resistant to damage by fire?
metal
How are electrical boxes sized?
number of conductors and raceway size
Which of the following is considered a hardwood?
oak
Per NEC® Section 300.4(E), boxes and raceways installed under roof decking must be ___.
protected from physical damage
The gauge of a metal stud determines the ___ of the stud.
thickness
Which is a industry best practice or preferred method to bring power to a RTU?
through the curb
There are ___ types of lumber used in construction.
two
Aside from paint, there are many other interior finishes. What is an example of an interior finish?
wood paneling
Match the following nominal stud size to its actual size: 3/4" × 11/2"
1 × 2
If we are roughing in a wall with 3/4″ gypsum and the mounting bracket has a setback of 1/4″, what depth plaster ring would be required to ensure our installation would be flush to drywall surface?
1″
How many cavities does a typical masonry block contain?
2
Match the following nominal stud size to its actual size: 11/2" × 111/4"
2 × 12
Match the following nominal stud size to its actual size: 11/2" × 11/2"
2 × 2
Match the following nominal stud size to its actual size: 1/2" × 31/2"
2 × 4
Match the following nominal stud size to its actual size: 11/2" × 51/2"
2 × 6
Match the following nominal stud size to its actual size: 11/2" × 71/4"
2 × 8
What is the minimum distance apart boxes in the same wall cavity of a fire rated wall must be spaced to eliminate the need for firestopping?
24″
Plywood is composed of which of the following?
3 or more plies of wood
What is the permissible exposure level (PEL), in micrograms, for crystalline silica for an 8 hour shift?
50
Which degree of angle is preferred when passing through a structural concrete beam?
90
Which conductor material has a higher resistance?
AL
Which conductor has lower resistance?
CU
Which type of PVC do plumbers use for venting?
DWV
What does FRP stand for?
Fiber Reinforced Plastic
Typically, where would we find the finishes that are to be installed in a commercial building?
Finish Schedule
What does LFNC stand for?
Liquidtight Flexible Nonmetallic Conduit
MEP is the acronym for ___.
Mechanical, Electrical, and Plumbing
What does PVC stand for?
Polyvinyl Chloride
What is insulation rated by?
R-value
Who is typically required to warranty the roof against leaks?
The roofer
What is the nominal size of lumber?
The size prior to surfacing and drying
Similar to stainless steel, if FRP is properly maintained, it can inhibit what?
bacteria
Which should we review, if possible, prior to beginning our overhead rough in? a.duct plan b.mechanical shop drawings c.reflected ceiling plan d.both a and b
both a and b
Which of the following is considered a softwood?
cedar
What does PEX stand for?
crossliked polyethylene
What is used to elevate the RTU off of the roof?
curb
Which of the following are roofing types? a.membranes b.gravel c.asphalt shingles d.all the above
d.all the above
Per NEC® Section 300.21, openings around electrical penetrations must be sealed using approved ___.
firestopping methods
What could occur if we do not maintain proper spacing between our wiring methods and the plumbers' installation?
galvanic action
When securing to pressure-treated lumber, it is recommended to use ___.
galvanized fasteners
Sheetrock® is a registered tradename for ___.
gypsum board
Which is the number one assassin of profitability?
rework
What is the actual name for a "Witch's Hat"?
roof jack
When installing electrical components on or through a roof, it is important that the electrician wait to complete his or her raceway until after the ___.
roof jack is installed
What is ductwork typically made of?
sheet metal
Where do we find the interior components of a wall in the drawings?
wall detail
