Concrete
A 94 pound bag of Portland cement contains:
1 cubic foot.
Portland cement is usually packaged in sacks containing:
1 cubic foot.
When all the ingredients are properly combined the approximate weight of a cubic foot of concrete is:
150-160 pounds.
What lumber material should be used to make a form for a 3 1⁄2" slab?
2x4s
Using the 1-2-3 rule, how many shovels of sand are needed to mix with 15 shovels of Portland cement?
30
John needs 28 cubic yards of concrete for a construction job and he needs to allow for 10% waste. If he has to order in whole yards, how many should he order?
31
How many cubic yards of concrete are needed to make a driveway 10' wide, 270'long, and 4" thi
33.33
Too much slump in concrete can be corrected by adding:
Aggregates
Moisture in wood or on the wood's surface will cause paint to:
Blister and Peel
What makes the smoothest finish on concrete?
Concrete finishing trowel
Most concrete used in construction is:
Delivered ready-mixed.
Rough places and specks on a painted surface are caused by:
Dust.
When a spray gun is used to paint, a "sandy or dusty" surface finish is caused by:
Holding gun too far from surface.
The purpose of floating concrete is to:
Impact concrete at the surface and make it easier to finish.
Portland cement is manufactured from:
Limestone.
A disadvantage of painting with a paint brush, rather than a spray gun, is that the:
Paint brush is slower.
How can bleeding of water on the top surface of concrete placed in tall forms be corrected?
Pour concrete more slowly and use a stiffer mix.
The fine aggregate used in concrete is:
Sand.
Less sand, gravel, and water are used in the mixture when concrete will have:
Severe use.
A disadvantage of painting with a spray gun, rather than a paint brush, is that the:
Spray gun costs more.
Cracking and scalding of paint is caused by:
The surface expanding and contracting.
In warm weather, forms should remain in place:
Two to three days.
When machine mixing concrete, the first thing put in the mixer is:
Water
Which material is the BEST reinforcement material for concrete?
Welded wire
