Contractor School Online ®
The premiere national online resource to assist you in passing your Contractor License Exam.
Tell a friend!

Email or Call (800)966-9596
Home  |  National Contractor License  |  Request Information  |  Construction Glossary  |  Login

District of Columbia-Concrete Online Practice Test

These are actual questions from our online practice test.

We have included a question from each chapter of the test. Every question will be multiple choice. The answers are not included with the sample.

Sample Questions

# Chapter Title Question
1 Concrete, Mixtures, Strength and Pressure Which of these allowable drop heights, when pouring concrete, would be an acceptable limit?
2 Formwork What should forms be made of?
3 Foundations

Control joints are generally located how many ft. apart on concrete slabs on grade, as a rule, ____ to ______ times the thickness.

4 Shotcrete What are some of the factors that determine the quality of the shotcrete?
5 Reinforcing Steel, Rebar and Ties A ___________________ is a long metal trough with rounded bottom and open ends used for conveying concrete to a lower elevation.
6 Unbonded Post-Tensioned, Mathematics and Calculations

Materials that exhibit body couples and couple stresses in addition to moments produced exclusively by forces are called _____________ materialsThese materials are then those materials with only moments of forces. In the classical branches of continuum mechanics the development of the theory of stresses is based on these materials.

Therefore, the sum of all applied forces and torques (with respect to the origin of the coordinate system) in the body can be given by

mathcal F = int_V mathbf a,dm = int_S mathbf T,dS + int_V 
homathbf b,dV
mathcal M = int_S mathbf r 	imes mathbf T,dS + int_V mathbf r 	imes 
homathbf b,dV
7 Excavating, Layout, Drainage and Compaction Excavations in fractured rock can often avoid sheeting altogether, either by injecting grout into the joints of the rock to stabilize it or by drilling into the rock and inserting __________ that fasten the blocks together.
8 Excavating Sitework What is necessary for support, when excavation goes below foundations of existing structures?
9 Tools and Supplies A _______________ is an implement consisting of a broad blade or scoop attached to along handle.
10 Definitions A/An _________________ is a slab of concrete extending beyond the entrance to a building, particularly at an entrance for vehicular traffic.
11 Concrete Safety After the concrete is deposited in the desired area by chute, pump, or wheelbarrow, it should be pushed—not lifted—into final position with a _________.
12 Safety and Dig Alert

If an emergency notice must be given to District One Call,  the utility companies will attempt to respond within _______.

13 Bid Preparation and Estimating The notice to owner contained in a contract, informs the customer of _________________.
14 Basic - Blueprint Reading and Plans A revision (marker) is shown on the completed set of working drawings by _______________.
15 Mathematics and Calculations 5/8 - 3/10 = 25/40 - 12/40 =


Go Back
What We Offer  |  Obtaining a Trade License  |  Test Preparation  |  About Us  |  Contact Us

Copyright © 1998-2019, Contractor School Online®,All Rights Reserved