Construction Safety

Unit Assessment

QUESTION 1

In evaluating soil, if the thumb penetrates no further than the length of the thumbnail, it is probably __________.

1.		type A soil
		type B soil
		type C soil
		layered geological strata

QUESTION 2

Which of the following is NOT a specification for a limited access zone during masonry wall construction?

1.		On the unscaffolded side of the wall
		Established prior to the start of construction
		Equal in width to one-half the height of the wall
		Run the entire length of the wall

QUESTION 3

What is the minimum required clearance when a crane is operating in the vicinity of a 150-kV power line?

1.		10 feet
		15 feet
		20 feet
		25 feet

QUESTION 4

For excavations that are more than 4 feet in depth, what is maximum allowable travel distance to the nearest safe means of egress?

1.		10 feet
		15 feet
		20 feet
		25 feet

QUESTION 5

Hardware used in the lifting precast concrete must capable of supporting __________ times the intended load applied or transmitted.

1.		6
		5
		4
		2

QUESTION 6

Discuss the site evaluation steps that should be taken before starting an excavation project. Which step(s) are likely to contribute the most in preventing excavation injuries? Why? Your response should be at least 200 words in length.

QUESTION 7

What is the purpose of conducting an engineering survey prior to a demolition project? Describe and discuss the major components of an engineering survey for the demolition of a two-story wood structure. Your response should be at least 200 words in length.

QUESTION 8

Explain how the different types of trenching and excavation protective systems (shielding, shoring, and sloping) are selected based on construction site conditions. Also, please provide a brief description of each type of protective system in your discussion.  Your response should be at least 75 words in length.

QUESTION 9

Discuss hazards and precautions to be taken when operating a crane near power lines.  Your response should be at least 75 words in length.