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Flashcards in Site Work Deck (18):
1

Soil is classified into four groups. What are they?

Sands and gravels, silts, clays, and organics

2

T/F Sand and Gravel are good bases for a building foundations.

TRUE

3

What are soil tests used to determine?

Bearing Capacity, Water Table Level, and Porosity.

4

Foundations below the water table are subjected to _________________.

Hydrostatic Pressure

5

With all types of fill there is an optimum relationship between the fill's density and moisture content. What method is used to determine this?

Proctor Test

6

_______ is the preloading of the ground with fill material to cause consolidation and settlement of underlying soil before building.

Surcharging

7

How thick should concrete paving be?

5" minimum

8

Expansion joints should be placed every _____ feet for concrete paving.

20'

9

How thick should a concrete walk be?

4"

10

Control joints are place every ____ feet and expansion joints every ____ feet on a concrete walk.

5'; 20'

11

_________ Is a fine grained sedimentary soil composed of material smaller than sand but larger than clay, and slightly plastic in their behavior.

Silt

12

_______ are composed of smaller particles than silts, have cohesion or tensile strength and are plastic in their behavior when wet.

Clays

13

_____ are materials of vegetable or other organic matter, and make poor bases for foundations

Organics

14

What does Hardpan mean when referring to clay sand or gravel

It is an unbroken mixture of clay, sand or gravel

15

What are the 6 methods of soil treatment?

Drainage Fill Compaction Densification Surcharging Mixing

16

Unshored sides of soil should be no steeper than?

Their angle of repose, or 1.5 units horizontal by 1 unit vertical.

17

In order to minimize subsurface water a minimum slope of ____ away from the building is required?

1/4" per 1'

18

_________ is a method of temporarily supporting existing foundations while they are being repaired or stregthened or being expanded to a lower level by using needle beams supported by the adjacent grade

Underp