Deck 11: Pricing Concrete Work

Question 1

Where a central tower crane is not in place on a site, using ______ to place concrete is usually the most economical alternative. ​

A)a hand-operated buggie
B)a conveyor
C)a powered buggie
D)pumps

Answer 1

D

Question 2

The most economical method of placing concrete is to _________.

A)use hand-operated buggies
B)use conveyors
C)discharge it into position directly from the truck
D)use a crane and bucket setup

Answer 2

C

Question 3

The cost of supplying concrete to a site includes the cost of cement, sand, aggregate, water, and equipment to mix and transport the concrete.

Answer 3

True

Question 4

The most time-consuming activity involved in setting up a form system is usually the placing and adjusting of ____.

A)form ties
B)form walls
C)rebar
D)form marks

Question 5

Buggies require a small number of personnel to operate them in order to maintain reasonable production rates in terms of cubic yards placed per hour.

Question 6

Concrete cannot be placed using the crane and bucket setup.

Question 7

The "____" is the area of the form system that will be in contact with the concrete.

A)load area
B)contact area
C)support area
D)form area

Question 8

Most contractors tend to use the same screed system on all their jobs so the estimator may be able to obtain cost information from a previous job and use it to price the next job.

Question 9

The need for a multitude of calculations of form materials prices can be entirely avoided by using a(n)"____" for all form materials required on a project.

A)budget price
B)trade price
C)reference price
D)average price

Question 10

Reinforcing steel for concrete includes ____ and reinforcing bars.

A)welded wire mesh
B)wire
C)stranded wire mesh
D)welded wire coil

Question 11

Form hardware is often computed at a rate of between ____ of the total value of formwork material included in the estimate.

A)10% and 20%
B)10% and 30%
C)15% and 30%
D)20% and 30%

Question 12

The factor that, perhaps, has the most influence on the cost of placing concrete is the method used to convey the concrete from the mixing trucks to its final location.

Question 13

____ for cast-in-place concrete may be constructed of lumber, plywood, aluminum, steel, and combinations of these materials.

A)Loadwork
B)Form standards
C)Formwork
D)Form loads

Question 14

____ additives to concrete are used to maintain a low water/cement ratio in a concrete mix for maximum strength.

A)Hardener
B)Elasticizer
C)Accelerator
D)Superplasticizer

Question 15

The cost of materials used in a formwork system would include the rental or purchase cost of all the components involved in its construction, including form ties and other hardware items.

Question 16

Chutes over ____ feet long can be harmful to the concrete mix by causing segregation of concrete constituents.

A)4
B)6
C)8
D)10

Question 17

An allowance for waste and spillage of concrete is added as a waste factor to concrete takeoff quantities.

Question 18

The use of concrete buggies has increased significantly in recent years.

Question 19

____ has randomly distributed fibers incorporated into the concrete mix with the object of improving the tensile strength of the concrete and increasing the concrete's ability to resist cracking and deformation.

A)GRC
B)FRC
C)DRC
D)TRC

Question 20

The value of waste factors usually lies between 1% and ____% for concrete placed in formwork.

A)5
B)10
C)12
D)15