General Contractor Part A
Which is not a grade of asphalt
(Ans- 40-60
Concrete mix formula
(Ans- 1 part cement, 2 parts sand, 4 parts gravel
What backfill should be used after concrete forms removed?
(Ans- Gravel
C^2=b^2+a^2 refers to:
(Ans- Vertical rise
What temperature does steel start to deform
(Ans- 500 degrees Celsius
What is Rankine
(Ans- Absolute zero scale for Fahrenheit
Best time to make splices on Rebar?
(Ans- After placing and spacing, and after supports are set
Absolute zero scale for centigrade is:
(Ans- Kelvin
Supports beneath horizontal formwork are called
(Ans- Shores
What angle does separation of concrete occur?
(Ans- 1:02
Minimum embedment of 1/2″ anchor bolts:
(Ans- 7″
Max distance to an exit in bldg without auto sprinklers is:
(Ans- 200 feet
Minimum spacing for anchor bolts
(Ans- 6′ o.c. And within 12″ of ends
Dalton’s law:
(Ans- When 2 fades occupy the same space, combined gasss fill the same
volume that either gas would fill by itself
Which instrument used to test continuity
(Ans- Ohmmeter
Armature windings on an electric motor are
(Ans- Single phase
When cutting a road, first excavation should be:
(Ans- Drainage ditches
Minimum width of a vestibule according to UBC:
(Ans- 44″
Slowest curing cement
(Ans- Type IV
1 horsepower = X watts
(Ans- 746 watts
What does sulfate salt do to concrete
(Ans- Causes swelling and disintegration
1/8 pipe bend is X degrees
(Ans- 45