saftey part three

Question 1

You have performed the following visual inspection and manual tests. How would you
classify a soil that has the following properties?
Visual Observations: Trench 12 feet deep
Soil Observation: Angular Gravel
Unconfined Compressive strength: 1.12 tsf
Surrounding Area & Trench Conditions: an open field
A. Type A soil
B. Type B soil
C. Type C soil
D. Stable Rock

Answer 1

B. Type B soil

Question 2

You have performed the following visual inspection and manual tests. How would you
classify a soil that has the following properties?
Visual Observations: Trench 16 feet deep
Soil Observation: Sand
Unconfined Compressive strength: 0.43 tsf
Surrounding Area & Trench Conditions: an open field
A. Type A soil
B. Type B soil
C. Type C soil
D. Stable Rock

Answer 2

C. Type C soil

Question 3

You have performed the following visual inspection and manual tests. How would you
classify a soil that has the following properties?
Visual Observations: Trench 6 feet deep
Soil Observation: Clay
Unconfined Compressive strength: 1.73 tsf
Surrounding Area & Trench Conditions: An open Field
A. Type A soil
B. Type B soil
C. Type C soil
D. Stable Rock

Answer 3

A. Type A soil

Question 4

You have performed the following visual inspection and manual tests. How would you
classify a soil that has the following properties?
Visual Observations: Trench 14 feet deep
Soil Observation: Sandy Clay
Unconfined Compressive strength: 1.73 tsf
Surrounding Area & Trench Conditions: water is freely seeping
A. Type A soil
B. Type B soil
C. Type C soil
D. Stable Rock

Answer 4

C. Type C soil

Question 5

You have performed the following visual inspection and manual tests. How would you
classify a soil that has the following properties?
Visual Observations: Trench 9 feet deep
Soil Observation: Silty Clay
Unconfined Compressive strength: 2.40 tsf
Surrounding Area & Trench Conditions: Previously Disturbed Soil
A. Type A soil
B. Type B soil
C. Type C soil
D. Stable Rock

Answer 5

B. Type B soil

Question 6

You have performed the following visual inspection and manual tests. How would you
classify a soil that has the following properties?
Visual Observations: Trench 16 feet deep
Soil Observation: Sandy Clay
Unconfined Compressive strength: 0.47 tsf
Surrounding Area & Trench Conditions: Sloped Layered system with
4H:1V
A. Type A soil
B. Type B soil
C. Type C soil
D. Stable Rock

Answer 6

C. Type C soil

Question 7

You have performed the following visual inspection and manual tests. How would you
classify a soil that has the following properties?
Visual Observations: Trench 13 feet deep
Soil Observation: Clay Loam
Unconfined Compressive strength: 1.56 tsf
Surrounding Area & Trench Conditions: Vibration Nearby
A. Type A soil
B. Type B soil
C. Type C soil
D. Stable Rock

Answer 7

B. Type B soil

Question 8

You have performed the following visual inspection and manual tests. How would you
classify a soil that has the following properties?
Visual Observations: Trench 7 feet deep
Soil Observation: Sandy Loam
Unconfined Compressive strength: 1.05 tsf
Surrounding Area & Trench Conditions: Previously Disturbed
A. Type A soil
B. Type B soil
C. Type C soil
D. Stable Rock

Answer 8

B. Type B soil

Question 9

What is the maximum lateral travel distance in feet to a means of egress in a 5’ deep
trench?
A. 25
B. 50
C. 75
D. 100

Answer 9

A. 25

Question 10

What does the term Uprights from the timber shoring tables mean?
A. The vertical supports that separate the wales
B. The vertical sheet piles that restrain the soil
C. The studs or braces that support the vertical shoring system
D. The posts or shores that support the horizontal shoring system

Answer 10

B. The vertical sheet piles that restrain the soil

Question 11

What is the difference between the C series and D series Tables?
A. Table C is for Aluminum Hydraulic Shoring. and Table B is for Soil Type A
B. Table C is for Steel Sheeting and Table D is for Aluminum Hydraulic Shores
C. Table C is for Maximum Allowable Slopes and Table D is for Sloping
D. Table C is for Timber Shoring and Table D is for Aluminum Hydraulic

Answer 11

D. Table C is for Timber Shoring and Table D is for Aluminum Hydraulic

Question 12

What is the difference between Table C-1.1 and C-2.1?
A. Table C-1.1 is for Mixed Oak and Table C-2.1 is for Douglas Fir
B. Table C-1.1 is for Douglas Fir and Table C-2.1 is for Mixed Oak
C. Table C-1.1 is for Soil Type A and Table C-2.1 is for Soil Type B
D. Table C-1.1 is for Steel Sheeting and Table C-2.1 is for Aluminum Hydraulic

Answer 12

A. Table C-1.1 is for Mixed Oak and Table C-2.1 is for Douglas Fir

Question 13

What is the difference between Table C-1.1 and C-1.2?
A. Table C-1.1 is for Mixed Oak and Table C-1.2 is for Douglas Fir
B. Table C-1.1 is for Douglas Fir and Table C-1.2 is for Mixed Oak
C. Table C-1.1 is for Soil Type A and Table C-1.2 is for Soil Type B
D. Table C-1.1 is for Steel Sheeting and Table C-1.2 is for Aluminum Hydraulic

Answer 13

C. Table C-1.1 is for Soil Type A and Table C-1.2 is for Soil Type B

Question 14

What is the maximum depth in feet that you can use shoring tables C and D?
A. 20
B. 60
C. 100
D. 125

Answer 14

A. 20

Question 15

A trench is excavated in a Type A soil, 13 feet deep and 5 feet wide. The cross braces
available are a 6” x 6” and the shoring available is a Mixed Oak. What is the horizontal
and vertical spacing of the cross braces, the size and spacing of the wales and the size
and spacing of the sheeting?
A. Cross braces are spaced 6 feet horizontally and 5 feet vertically. The wales are
8” x 8” spaced 5 feet vertically, and the uprights are 2” x 6” spaced 2 feet
horizontally
B. Cross braces are spaced 8 feet horizontally and 4 feet vertically. The wales are
6” x 8” spaced 4 feet vertically, and the uprights are 4” x 6” spaced 4 feet
horizontally
C. Cross braces are spaced 10 feet horizontally and 4 feet vertically. The wales
are 8” x 10” spaced 4 feet vertically, and the uprights are 2” x 6” spaced 5 feet
horizontally
D. Cross braces are spaced 10 feet horizontally and 4 feet vertically. The wales
are 8” x 8” spaced 4 feet vertically, and the uprights are 4” x 8” spaced 5 feet
horizontally

Answer 15

C. Cross braces are spaced 10 feet horizontally and 4 feet vertically. The wales
are 8” x 10” spaced 4 feet vertically, and the uprights are 2” x 6” spaced 5 feet
horizontally

Question 16

A trench is excavated in a Type B soil, 19 feet deep and 5 feet wide. The cross braces
available are 8” x 8” and the shoring available is a Douglas Fir. What is the horizontal
and vertical spacing of the cross braces, the size and spacing of the wales and the size
and spacing of the sheeting?
A. Cross braces are spaced 6 feet horizontally and 5 feet vertically. The wales are
10” x 12” spaced 5 feet vertically, and the uprights are 3” x 6” spaced close
horizontally
B. Cross braces are spaced 6 feet horizontally and 5 feet vertically. The wales are
6” x 8” spaced 4 feet vertically, and the uprights are 4” x 6” spaced close
horizontally
C. Cross braces are spaced 10 feet horizontally and 4 feet vertically. The wales
are 8” x 10” spaced 4 feet vertically, and the uprights are 3” x 6” spaced close
horizontally
D. Cross braces are spaced 10 feet horizontally and 5 feet vertically. The wales
are 12” x 12” spaced 5 feet vertically, and the uprights are 4” x 6” spaced
close horizontally

Answer 16

D. Cross braces are spaced 10 feet horizontally and 5 feet vertically. The wales
are 12” x 12” spaced 5 feet vertically, and the uprights are 4” x 6” spaced
close horizontally