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Contractor Licensing · S.6

Louisiana Contractor Curb, Gutter, Driveways, Sidewalks, Retaining Walls, Patios, Foundations Trade Examination Practice Test

This trade examination concerns concrete sitework for curbs, gutters, driveways, sidewalks, retaining walls, patios, and foundations. The practice material addresses field decisions around layout, drainage, concrete batching and transport, surface preparation, joints, and construction details that affect fit, water movement, and performance.

Exam overview

Exam providerLouisiana State Licensing Board for Contractors
Exam codeS.6
CategoryContractor Licensing

About the Louisiana Contractor Curb, Gutter, Driveways, Sidewalks, Retaining… Exam

Work across these applications calls for translating plans into accurate grades, alignments, and forms before concrete placement. Relevant decisions include checking driveway and patio slopes, keeping curved sidewalk forms consistent, and resolving utility conflicts before excavation. Concrete handling topics include maintaining consistent batch proportions and limiting separation during wheelbarrow transport. Surface preparation also matters when placing a bonded topping, while isolation joints separate a patio from a building foundation and control joints help manage cracking in sidewalks. For retaining walls, a granular drainage layer connected to an outlet helps relieve water pressure behind the wall. These concepts support practical judgment at several stages of a project: setting out the work, preparing forms and subgrades, managing concrete, and addressing drainage and movement details.

Sample Practice Questions

Review a selection from this exam's published US Practice Tests practice bank.

Question 1

A patio plan includes a slope away from the house. Which field check best confirms that the formed surface will follow the intended drainage direction before concrete placement?

  1. AMeasure elevations at suitable points and compare them with the plan's slope and drainage outlet
  2. BCheck only that the forms are parallel to the house
  3. CVerify that the forms have the same color
  4. DWait until the concrete is placed, then judge the slope by appearance
Show answerCorrect answer: A

Elevation checks against the planned slope confirm that the surface will drain as intended before placement, when adjustments to forms and grades are still practical.

Question 2

A concrete mixture is being batched on site. Which method best supports consistent proportions from batch to batch?

  1. AMeasure each ingredient using consistent, specified quantities
  2. BAdd cement until the mixture looks sufficiently gray
  3. CEstimate water by the amount remaining in the tank
  4. DChange aggregate proportions to suit each wheelbarrow load
Show answerCorrect answer: A

Consistent measurement of cement, water, and aggregates helps produce concrete with predictable workability and performance. Follow the approved mix proportions rather than relying on visual estimates.

Question 3

When laying out a driveway intended to drain toward a street, what should be checked before excavation begins?

  1. AThat the planned elevations create a continuous drainage path without directing water toward buildings
  2. BThat the driveway is level in every direction
  3. CThat the street is always the highest point on the site
  4. DThat the concrete thickness varies randomly along the driveway
Show answerCorrect answer: A

Checking elevations and drainage paths in advance helps avoid ponding and unintended water flow toward structures. The appropriate slope depends on site conditions and applicable requirements.

Question 4

What is the purpose of using a bond breaker or isolation joint where a concrete patio meets a building foundation?

  1. ATo allow the slab and foundation to move independently
  2. BTo bond the patio rigidly to the foundation
  3. CTo strengthen the patio by adding reinforcement at the edge
  4. DTo seal every crack that may form in the patio
Show answerCorrect answer: A

An isolation joint separates adjoining concrete elements so they can move independently as they shrink or respond to temperature changes, reducing unintended restraint and cracking.

Question 5

A retaining wall detail calls for a granular drainage layer behind the wall. What is the main purpose of that layer when properly connected to an outlet?

  1. ATo increase the weight of soil pressing on the wall
  2. BTo provide a path for water to drain and reduce water pressure behind the wall
  3. CTo prevent all soil movement by bonding the backfill to the wall
  4. DTo replace the need for a structurally adequate wall design
Show answerCorrect answer: B

A drainage layer connected to a functioning outlet helps convey water away from the wall, limiting hydrostatic pressure. It does not replace structural design or other required drainage measures.

Question 6

A crew is preparing a concrete surface that will receive a separate bonded topping. What should be established before the topping is placed?

  1. AThat the base surface is prepared to the specified condition for bonding
  2. BThat the base surface is covered with loose dust to fill small pores
  3. CThat the topping is placed over any curing compound without checking compatibility
  4. DThat the base is polished smooth regardless of the project requirements
Show answerCorrect answer: A

A bonded topping requires a properly prepared substrate, with surface condition and any bonding materials handled as specified. Dust, incompatible curing compounds, or an unsuitable finish can interfere with adhesion.

Question 7

Why are control joints commonly installed in a concrete sidewalk?

  1. ATo direct likely shrinkage cracking to planned locations
  2. BTo prevent all movement of the slab
  3. CTo increase the slab's surface hardness
  4. DTo replace the need for a stable base
Show answerCorrect answer: A

Concrete shrinks as it dries and may crack as it changes temperature. Properly located control joints create weakened planes that encourage cracks to occur at intended locations.

How to use this practice test

The free US Practice Tests practice bank contains 50 questions for this exam. Each session presents up to 20 random questions, with results shown after the session. Use the questions to check your reasoning on layout, drainage, concrete handling, joints, and related field decisions, then revisit any topic where your choice did not match the construction purpose.

Preparation tips

  • Practice checking grades with a level or other suitable field method, and trace how the planned slope carries water away from buildings or toward the intended outlet.
  • Review why isolation joints, control joints, and bond breakers are used; distinguish movement separation from crack-control measures and bonded-surface preparation.
  • Work through concrete batching and transport scenarios by identifying practices that keep proportions consistent and limit segregation.
  • For retaining-wall drainage details, trace the path from the granular layer behind the wall to its outlet and consider what happens if that path is blocked.
  • When a utility conflicts with a planned excavation, identify the information and coordination needed before altering the layout or digging.
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