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

Colorado-Building Construction 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 Excavating, Drainage, Compaction and Trenching Trenches must be sufficiently excavated and stones, rocks, or boulders should be removed to provide a minimum of ____ inches clearance under all portions of the pipe.
2 Earthworks, Excavating and Surveying General landfill is considered to be what % of compaction?
3 Grading, Compaction and Soils What are compaction methods sometimes called?
4 Underground Utilities, Drainage and Pipelines What is slip-lining mainly used for?
5 Excavating and Worksite During initial excavation, if ground water is encountered, one of the best methods of correcting it before proceeding is to __________.
6 Plumbing, PSI, Water Pressure, Water Flow, Pipelines and Water Pressure What are horizontal directional drilling methods mainly used for?
7 Plumbing, Valves, Gas Pipes, Oxygen, Gas Cylinders and Water Heaters All manholes must be equiped with _________.
8 Electrical Transmission Lines

In long transmission lines, as we move away from the receiving end, the reflected component of voltage __________ in magnitude and phase.

 

9 Boilers and Furnaces Mechanical plans and specifications are usually required for buildings having an area of _________ sq. ft. or more.
10 Pipeline Management, Inspection and Cleaning What are some conventional cleaning methods of sewer systems?
11 Coatings and Control Corrosion The use of high strength cementitious materials top coated with _____ coatings is a cost effective solution to renewal of severely deteriorated structures.
12 Pipe Welding, Installing and Ductile Iron Pipes

Using direct bury and tunneling, workers installed 4,000 feet of ___________ -inch-diameter HOBAS pipe in Salt Lake County, Utah, at depths from 2 to 26 feet.

13 Asphalt Paving Subsurfaces and Drainage Asphalt is sprayed at a rate of .10 to _________ gal. per yard.
14 Hot-Mix Paving

If the air void are above ___ to ____ %, the mix will permeable to air and  water and will not have the required durability.

15 Surface Coatings and Striping When temporary pavement delineation is applied to the top layer of permanent surfacing, traffic striping and pavement markings shall be applied within______________________________________.
16 Concrete, Foundations and Piles A _______________ is used to transfer the load of a structure down through the upper weak layer of topsoil to the stronger layer of subsoil below.
17 Concrete Formwork and Shotcrete What are some of the factors that determine the quality of the shotcrete?
18 Concrete, Unbonded Post-Tensioned and Mathematics

Moisture infiltration in unbonded post-tensioned cables can occur from numerous sources including initial construction, ground water, roof leakage, and poor quality grout pockets.

19 Structural, Reinforcing Steel, Rebar and Ties Metal decking for installation of roofing materials, or for concrete floor slab forms, must be calculated with allowances for _____________.
20 Steel Framing, Steel Columns and Steel Erection

Bracing connections are generally made with _______________ bolts in clearance holes. In theory at least, this allows some movement in the connection, but in practice this is ignored in orthodox construction. In some cases it may be that movement on reversal is unacceptable - preloaded connections should be used in these circumstances.

The general design process is:

  • Identify the load path through the connection
  • Arrange the connection to ensure that the design intent of the members is realised, e.g. the beam connections remain nominally pinned
  • Include the effects of any significant eccentricity
  • Check the components in the connection.
21 Joists and Girders

HOW MANY JOISTS SPACED 16" ON CENTER ARE REQUIRED FOR A BUILDING 120' LONG?

22 Rough Carpentry and Framing There should be no more than how many feet vertically between landings?
23 Insulation and Vapor Barriers Technically, any air-based insulation material cannot exceed an R-value of R-5.5/in. because _____________.
24 Aluminum, Roofing Panels, Galvalume, Galfan, Hips, Valleys and Seams How many inches should be to the weather on a 4 ply roof?
25 Roofing, Shakes, Flashing, Shingles, Tar, Roof Coverings, Galvanized and Steel Roll roofing is mostly used on _______________.
26 Roofing, Composition Shingles, Metal Roofing, Drainage Slope and Asphalt What is the medium pitch in inches for a cold process roof per foot?
27 Sanitary Sewers, Storm Sewers and Septic Tanks Exfiltration tests for storm sewers shall indicate leakage of no more than ___ gal/hr per inch of diameter per 100 feet of pipe.
29 Sewer System Tank Size, Soils, Pathogens and Gases The standard drain field for the pressure distribution system consists of perforated pipes, which are _____________ in diameter.
30 Sewer Installation, Pipes, Leach Fields and Tanks Sewer line connections to existing lines or manholes are not made until upstream lines have been _____________.
31 Sewer Installation, Cast Iron Pipes, Drainage and Trenches Characteristics of well points do not include _______________.
32 Sewer Installation, Joints, Field Elevations and Sewer Testing The necessary elevation of the bottom of the tank can be calculated from the _________________.
33 Masonry, Joints, Mortar, Concrete Blocks, Glass Blocks, Mortar Mixtures, Stairs and Steps Type S or N masonry cement can be used when making what type of mortar.
34 Masonry, Reinforcing Steel Bars, Walls, Mortar and Concrete The thickest stone of the sheet is used as the _________, during the troweling process.
35 Masonry, Mortar, Water Drains and Prisms What is the total height of masonry erected prior to the placement of grout called?
36 Landscaping, Grading and Low Voltage System

What is necessary to protect irrigation electrical control systems from lightning striking the ground?

37 Landscape Irrigation

Modern irrigation methods are efficient enough to supply the entire field uniformly with water, so that each plant has the amount of water it needs, neither too much nor too little. Water use efficiency in the field can be determined as follows:

  • Field Water Efficiency (%) = (Water Transpired by Crop ÷ Water Applied to Field) x ______________ .
38 Landscape Site Preparation, Grading, Contours, Drainage, Irrigation and Pipes Increasing pipe size will increase flow and decrease ___________.
39 Turf, Sod and Greenhouse

Heat transport in both amorphous and crystalline dielectric solids is by way of elastic vibrations of the lattice (phonons). This transport mode is limited by the elastic scattering of acoustic phonons at ___________ defects. These predictions were confirmed by the experiments of Chang and Jones on commercial glasses and glass ceramics, where the mean free paths were limited by "internal boundary scattering" to length scales of 10−2 cm to 10−3 cm. The phonon mean free path has been associated directly with the effective relaxation length for processes without directional correlation. If Vg  is the group velocity of a phonon wave packet, then the relaxation length l; is defined as:

l;=V_g t
40 Painting and Interior Decorating What primer sealer should be used for new plaster and drywall surfaces?
41 Finish Carpentry, Wood Flooring, Installing and Parquet Flooring Subfloor sheathing is typically manufactured in _______ sheets.
42 Finish Carpentry, Wood Flooring, Installing, Staining, Sanding, Sealers and Thermal Moisture Protection ________________ are high performance building panels used in floors, walls, and roofs for residential and light commercial buildings. The panels are made by sandwiching a core of rigid foam plastic insulation between two structural skins of oriented strand board (OSB), or plywood. Plywood thickness may increase with larger buildings.
43 Siding Regarding shingles and siding: diverging lines are obvious mistakes: With shingles or lapped siding, diverging starting and ending points can be hidden a little at a time by slightly tapering the course _____________.
44 Swimming Pool Construction, Soils, Earthwork and Excavating

An inlet pipe on a swimming pool can be used to fill the pool in 36 hours. The drain pipe can be used to empty the pool in 45 hours. If the pool is 12 filled and then the inlet pipe and drain pipe are opened, how long from that time will it take to fill the pool?

45 Swimming Pool Piping

Effluent is an outflowing of water or gas from a natural body of water, or from a human-made structure.

46 Swimming Pool Concrete and Kool Decks
  • Blowups, from expansion of concrete due to hot weather and sun, are more commonly caused by contraction joints that are not sealed and that then fill up with noncompressible materials (rocks, dirt). They can also be due to very long ____________ sections.
47 Tile, Terrazzo, Marble, Backing, lnstallation, Grouting, Mortar Mix and Adhesives What is the sum of one riser plus one thread?
48 Definitions
A short beam used like a bearing plate to distribute large reactive loads to a wall such as the load from a joist girder.
49 Job Safety Traffic Control An employee was injured because the contractor had overlooked a hazardous situation. Which of the following is a correct statement regarding responsibility for the injury?
50 ADA Parking Requirements Signs displaying "Unauthorized Parking" shall be 17 inches by 22 inches minimum in size with lettering_____inch(es)minimum high.
51 OSHA Safety, Dig Alert, Asbestos Code of Federal Regulations, Title 29, Part 1926 and Training

All emergency action plans required by a particular OSHA Standard. The emergency action plan shall be  ______________ and shall cover those designated actions employers and employees must take to ensure employee safety from fire and other emergencies.

52 General Regulations and Fire Extinguishers On a jobsite, you have to have a fire extinguisher for safety purpose within:


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

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