CHAPTER 5: FOUNDATION

Prior to the design and construction of a given foundation, the _____ at the site must be reliably determine.

• dewatering

• ground water level

• soil

If the ground water is high, some of the following problems are encountered. What are these problems?

• Foundation drainage

• Dewatering the site during construction

• Waterproofing or dampproofing

• All of the above

Sometimes the cost of dewatering the site is excessive and consequently the total construction cost may be high.

• True

• False

When construction is made below the ground water level, the site must be dewatered.

• True

• False

A cost comparison should be made for all feasible types of foundations or schemes of substructures from which the most _____ design can be selected.

• economical

• stable

The amount of free water that will flow into the excavation is difficult to predict. Under such circumstances, the design must be made _____ enough so that it can be adjusted to suit the actual conditions

• fixed

• flexible

_____ necessary for deep excavation in permeable soils.

• Extensive dewatering

• Little dewatering

_____ is required for shallow excavations or excavations in impervious soils.

• Extensive dewatering

• Little dewatering

A successful dewatering job does not depends upon the proper selection of the method and the constant vigil on the operation.

• True

• False

The dewatering may be done in one or a combination of methods of dewatering.

• True

• False