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What are the measurements of a standard size modular concrete block ?
7 5/8 in height and 7 5/8 width times 15 5/8 length
In re-roofing applications metal flashing to which bituminous materials are to be adhered shall be?
Primed
Soil that has expansion characteristics should?
Should not be used for
Backfill
Concrete cured with a proper moisture and a favorable temperature typically achieves what percentage of specified compressive strength after 7 days ?
60-75%
The minimum headroom for a stairway is measured vertically from the ?
Sloped plane a adjoining the tread nosing
What is the maximum spacing between studs of a 2 x 4 framed interior partition supporting roof and ceiling only?
24 inches
What is assumed to be the load bearing capacity of clay soil if no test are required or made?
1,500 pounds per square ft
Who is responsible for training employees about the hazards of working in confined spaces?
Employer
What is the maximum on center spacing of vertical reinforcement for a 12 inch nominal thickness reinforced concrete foundation wall?
72 inches
A trench must have an adequate protection system if its depth is a minimum of how many feet?
5 ft
How many bundles of three tab shingles are contained in a square of roofing?
Three
Who should inspect a trench daily for safety?
A competent person
What is the first thing an individual should check before entering a confined space?
Availability for breathable air
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