equipment foundations

Question 1

The two most common types of foundations used in substations and switchyards are drilled shafts and ?

Answer 1

slabs on grade

Question 2

The specification that covers zinc coatings applied by the hot-dip process to steel hardware is the ? standard.

Answer 2

ASTM a153

Question 3

A cost-effective foundation requiring less excavation and backfilling, and little or no forming, is the ? type.

Answer 3

auger drilled pier

Question 4

If a casing is used when pouring a foundation, it is not removed until the concrete has set for 24 to 48 hours.

Answer 4

false

Question 5

Reinforcing steel (rebar) comes in ?

Answer 5

grade 40,50,60

Question 6

After adding the mixing water, concrete should be poured within ? . Concrete that has begun to set should be rejected.

Answer 6

1 1/2 hrs

Question 7

The steel used to manufacture rebar can be billet-steel, rail-steel, or ?

Answer 7

axel steel

Question 8

After completion of the concrete pour and vibration, the next step is to ?

Answer 8

recheck the anchor bolts for location and alignment

Question 9

A properly built transformer or oil switch foundation must be capable of withstanding compression and ? loads.

Answer 9

overturning

Question 10

When hydraulic jacks are used to raise and level the main power transformer on a slab, point loads or ? loads are generated.

Answer 10

compression

Question 11

If water cannot be removed or if the concrete is to be dropped vertically more than six feet, the use of a ? may be implemented. This is the preferred method of pouring a drilled pier.

Answer 11

tremie pie

Question 12

The use of ? conduit or hardware in a concrete foundation must be avoided.

Answer 12

aluminum

Question 13

Templates are used to accurately locate anchor bolts. The acceptable positioning tolerance is within ?

Answer 13

1/16 ‘’