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Heavy Unit 3 Test
Unit 3
20
Other
Undergraduate 2
04/15/2008

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Cards

Term
Soil Types
Definition
Types A, B, and C
Term
Type A soil
Definition
solid Clay or rock. 1:.75 or 34 degrees
Term
Type B
Definition
Clay. 1:1 or 45 degrees
Term
Type C
Definition
Sand. 1:1.5 or 54 degrees
Term
Shoring
Definition
Braces that run perpendicular to the trench.
Term
Cofferdam
Definition
Temporary box-like structure used to hold back water or earth while work is being done inside
Term
Soldier Piles
Definition
Steel beams stuck in he ground and wood beams then placed in between them.
Term
Internal Bracing
Definition
Term
Sheet Pile
Definition
Steel. Interlocking. Used to construct below water table. Can be permanent.
Term
Earth tieback
Definition
use steel tie's into the earth
Term
Clay Swell and Shrinkage
Definition
Swell: 25% Shrink: 20%
Term
Sand Swell and Shrinkage
Definition
Swell: 12% Shrinkage: 12%
Term
Gravel Swell and Shrinkage
Definition
Swell: 12% Shrinkage: 12%
Term
Rock Swell and Shrinkage
Definition
Swell: 50% Shrinkage: -30%
Term
Dewatering System
Definition
series of well pints with each having a riser pipe and swing joins connecting to a common header manifold
Term
What is considered in protective systems
Definition
Type of soil, type of foundation, space around work area, depth of excavation, depth of water table.
Term
Rigging tension in each line: 90 degrees
Definition
50% of load (500 on 100 lb load)
Term
Tension: 60 degrees
Definition
57%
Term
Tension: 45 degrees
Definition
70%
Term
Tension: 30 degrees
Definition
100%
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