Concrete
What is spalling?
When the surface of concrete chips and flakes away
What is a fire cut?
Angled cut on a floor joist in a masonry wall
How do you calculate one side length of an octagon?
Building width x 4.97 = answer in inches
Area of a circle?
3.14 * r squared
Safety factor for scaffolding?
4 : 1
What are the two types of piles?
Friction piles and bearing piles
What type of framing is most common?
Platform framing
Do you use RWO or FWO for stair calculations?
FWO
Circumference?
3.14 * diameter
Safety factor for rigging?
5 : 1
How do you install wedges for snap ties?
Hammer snug, 2 duplex nails through wedge, snap tie hole down
Where is a header located?
Roofs and floors
Why are basement stair stringers left long at the bottom?
So they can be scribed to the basement floor
Cubic feet to cubic yards?
Divide by 27
Min. Safe distance from a 125,000 volt power line?
3m
How do you delay the curing of concrete flat work?
Ponding/flooding
How do you calculate SJL (Supported Joist Length)?
Span of building divided by 2, minus thickness of foundation
What is the bottom number on the triangle for a hip rafter on a octagon roof?
12.988
Baluster spacing?
(Distance between newels plus 1 ghost baluster) / (max spacing + a baluster)
Max depth of trench before you need a ladder? (Canada wide)
1.2m
What is type 50 cement?
Sulphate resistant
What is the cut on the end of a stick framed ceiling joist?
Seat cut
If you’re given one side of an octagon, how do you find building width?
Divide by .4142
Radius, when volume is given to you?
Square root of (volume / 3.14 * height)
10:1