MIDTERM CC1 MIDYEAR - TERMS

A contract has a value engineering clause that allows the parties to share and improvements that reduce cost. The contractor had originally planned to transport concrete on site for a small pour with motorized wheelbarrows. On the day of the pour, however, a concrete pump is available and is used substantially reducing the contractors labor cost for the day This is an example of

Efficient methodology whose benefit is to the contractor only

Compaction has been employed for centuries to improve the engineering properties of soil which includes the following improvements
I. Increased bearing strength
II. Reduced compressibility
III. Improved volume — change characteristics
IV. Reduced permeability
V. All the above

V only

It is particularly effective in compaction of cohesion less soils such as sands and gravel

Vibratory roller

What test has been developed to evaluate a soils moisture-density relationship under a specified compaction effort

Proctor Compaction Test

The process of giving natural soils enough abrasive substance and shear strength to accommodate traffic or design loads is called

Stabilization

Remotely located, unattended excavations may be left open (unfilled)

When the excavation has been barricaded or covered

Excavations site emergency rescue equipment (respirators, harnesses and lifelines, and basket stretchers) is required by OSHA when

Hazardous atmospheres exist

Acceptable means of entering and exiting trenches do NOT include

Derricks used with fall arrest harnesses

Which of the following does NOT constitute a protective system for excavation?
A. Sloping or benching sides of the trench

B. Trench shields

C. Shoring

D. Ladders

Ladders

Which of the following is NOT normally necessary prior to excavating a trench with a backhoe?

A. Contacting the utility company or property owner

B. Ensuring underground utilities are protected and supported

C. Determining the soil type by a competent person

D. Notifying the local OSHA office

Notifying the local OSHA office

When a competent person performs an inspection of an excavation site, the inspection does NOT need to include checking for

First-responder response time

A construction worker may enter an excavation without a protective System when the excavation is

Less than 5 ft deep with no indication of a potential cave-in

When two flaggers direct traffic approaching in two opposing directions, all of the following are required EXCEPT

Communication devices

Which statement about Portland Cement is correct?

A. May cause chemical burns

B. Is toxic in cement-rich mixtures

C. Remains chemically active for years

D. Can be recovered by pulverizing concrete

May cause chemical burns

Which of the following is NOT true of flashing arrow board signs used to channel traffic around construction zones?
A. Lights should be dimmed during the day and brightened during the night

B. Lights should not be glaring to drivers of oncoming truck traffic

C. Lights should be visible from a minimum or greater distance

D. Lights powered by solar panels require more careful aiming than generator-powered lights

Lights should be dimmed during the day and brightened during the night

In regard to cranes and derricks, what is generally NOT included in the definition of a critical lift
A. A lift of exceeds 70% of the crane's capacity

B. A lift that is on the critical path of the lift schedule

C. A lift that is close to power line

D. A lift that moves high-value material

A lift that is on the critical path of the lift schedule

A crane's capacity generally does NOT consider

Wind speed and air temperature

What is NOT generally a reason for lubricating wire hoisting rope?

To reduce external friction between the rope and sheaves

Workers in an excavation works shall be protected from cave ins using the following methods
I. Sloping or benching of the sides of the excavation

II. Supporting the sides of the excavation by shoring

III. Placing a shield between workers and the sides of excavators

IV. All the above

IV. All the above

When vibrating concrete in vertical forms, allow the vibrator head to penetrate through the freshly placed concrete about

2.5 cm but not more than 20 cm into previously placed layer of concrete

Which of the following relations is corrected to determine activity times?
A. Total float = Late finish- Early finish

B. Early finish = Late finish- activity duration

C. Late start = Late finish- Early start
D. Late start = Late finish + Activity Duration

Total float = Late finish- Early finish

What are the types of contracts by method of award?

Formally advertised contract and negotiated contract

What are the classification of fixed price contract?

Lump sum contracts and unit price contract

In the measures of congestion of highway capacity, what will happen as the density continues to increase?

The point is reached at which speed declines noticeably

To fulfill its functions harbor must satisfy the following requirements except:

A. The harbor entrance should be narrow enough to permit ready passage for shipping and wide enough to restrict the transmission of excessive amount of energy in time of storm.
B. Natural or artificial ship channels must have sufficient depth for the draft of vessels that are to be accommodated
C. Protection against destructive wave action must be provided by land masses or by breakwaters
D. The bottom should furnish secure anchorage to hold ships against the force of high winds

A. The harbor entrance should be narrow enough to permit ready passage for shipping and wide enough to restrict the transmission of excessive amount of energy in time of storm.

Based on the figures, determine the “pancake collapse”

B.

The volume at a section of a two-lane highway is 1500 veh/h in each direction and the density is about 25 veh/km. A large dump truck loaded with soil from an adjacent construction site joins the traffic stream and travels at a speed of 10 km/h for a length of 2.5 km along the upgrade before turning off onto a dump site. Due to the relatively high flow in the opposite direction, it is impossible for any car to pass the truck. Vehicles just behind the truck therefore have to travel at the speed of the truck which results in the formation of a platoon having a density of 100 veh/km and a flow of 1000 veh/h. Determine how many vehicles will be in the platoon by the time the truck leaves the highway

420 vehicles

Which of the following represents the correct sequence of the stages of fire development?
A. Growth, Ignition, Decay, Fully Developed
B. Ignition, Fully Developed, Growth, Decay

C. Incipient, Growth, Fully Developed, Decay

D. Decay, Growth, Incipient, Fully Developed

C. Incipient, Growth, Fully Developed, Decay