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NASCLA Accredited Commercial General Contractor practice questions

229 free questions with answers and explanations.

Practice test
  1. 201.A commercial building's foundation walls are being prepared for backfilling. The specifications call for dampproofing application. What is the primary function of applying dampproofing to a foundation wall?Thermal and Moisture Protection
  2. 202.A commercial building project requires a high-performance, durable roof system for a low-slope application in a region with extreme temperature fluctuations and high UV exposure. The owner prioritizes long-term watertightness and energy efficiency. Which roofing membrane is best suited for these conditions?Thermal and Moisture Protection
  3. 203.A contractor is overseeing the installation of a new single-ply roofing system on a commercial building. The project specifications require the use of a vapor barrier directly beneath the insulation layer. What is the primary purpose of this vapor barrier in this specific roof assembly?Thermal and Moisture Protection
  4. 204.A commercial general contractor is managing a project under a lump-sum contract. During excavation, an unexpected underground water main, not indicated in the contract documents, is discovered. Repairing and rerouting this main will cause significant delays and additional costs. Under standard construction contracts, what is the MOST appropriate initial action the contractor should take?General Requirements
  5. 205.A general contractor is installing an automatic revolving door system at the main entrance of a commercial building. Which of the following safety features is mandated by building codes and industry standards to prevent entrapment and ensure pedestrian safety?Specialties and Equipment
  6. 206.A commercial general contractor is negotiating a contract for a new office building. The owner insists on a clause stating that the contractor will be responsible for any damages or losses incurred by the owner due to the contractor's negligence, errors, or omissions, even if the owner is partially at fault. What type of clause is the owner attempting to include?General Requirements
  7. 207.A general contractor is installing a new EPDM single-ply roofing system on a commercial building. The specifications require the use of a primer before applying adhesive to bond the EPDM membrane to the insulation boards. What is the most critical function of this primer in the EPDM roofing installation process?Thermal and Moisture Protection
  8. 208.A general contractor is reviewing the project schedule for a new commercial building. The critical path analysis indicates that the foundation work, structural steel erection, and exterior enclosure are sequential activities with no float. If a two-week delay occurs during the foundation work, what is the immediate impact on the project's overall completion date?General Requirements
  9. 209.A commercial roofing project involves the removal of an existing Built-Up Roofing (BUR) system and installation of a new one. During the tear-off, the contractor discovers that the underlying roof deck is significantly deteriorated in several areas due to moisture damage. What is the most appropriate immediate action the contractor should take?Thermal and Moisture Protection
  10. 210.A general contractor is performing a renovation on a historic commercial building. The project involves modifying existing structural elements and adding new load-bearing walls. According to standard building codes (e.g., IBC), which of the following professionals is REQUIRED to review and stamp the structural design drawings for these modifications?General Requirements
  11. 211.A contractor is installing sheet metal flashing at a roof-to-wall intersection on a commercial building. The flashing needs to be integrated with the roof membrane and extend up the wall to prevent water intrusion. Which type of flashing detail is specifically designed for this application, typically involving multiple pieces to manage water runoff?Thermal and Moisture Protection
  12. 212.A general contractor is managing a multi-phase commercial office complex project. To effectively manage risks, the contractor decides to implement a risk management plan. Which of the following is an example of 'risk mitigation' for a potential project delay due to material shortages?General Requirements
  13. 213.A commercial general contractor is evaluating the financial health of a potential subcontractor before awarding a significant portion of a large project. The contractor reviews the subcontractor's balance sheet and income statement. To assess the subcontractor's ability to meet its short-term obligations, which financial ratio would be MOST relevant to calculate?General Requirements
  14. 214.A commercial general contractor is evaluating the financial health of a potential subcontractor for a large, complex HVAC system installation. The subcontractor has provided their balance sheet and income statement. To assess their ability to meet financial obligations over the short term (typically within one year), which financial ratio should the general contractor primarily focus on?General Requirements
  15. 215.A commercial general contractor is managing a project with a total contract value of $5,000,000. The contract specifies a 10% retainage to be held from each progress payment. If the contractor has completed 60% of the work and submitted progress payment applications totaling $3,000,000, how much retainage has the owner withheld to date?General Requirements
  16. 216.A general contractor is implementing a new quality control plan for a high-rise residential project. The plan includes regular inspections, material testing, and adherence to manufacturer specifications. Which aspect of quality control is MOST directly addressed by inspecting completed work against the project's contract documents and specifications?General Requirements
  17. 217.A general contractor is managing a commercial renovation project where asbestos-containing materials (ACMs) have been identified. According to OSHA regulations, what is the MAXIMUM permissible exposure limit (PEL) for airborne asbestos fibers averaged over an 8-hour workday?General Requirements
  18. 218.A general contractor is preparing a bid for a new commercial office building project. The project specifications require adherence to the latest International Building Code (IBC) and specific accessibility standards. During the pre-bid phase, the contractor identifies several discrepancies between the architectural drawings and the structural engineering plans, particularly regarding the placement of a load-bearing wall. What is the MOST appropriate action for the contractor to take?General Requirements
  19. 219.A commercial general contractor is negotiating a contract for a new retail complex. The owner insists on a clause that transfers the risk of loss or damage to the project, as well as liability for third-party claims, from the owner to the contractor. This clause requires the contractor to protect the owner from any claims, damages, losses, or expenses that arise out of the contractor's work. What type of clause is the owner requesting?General Requirements
  20. 220.A construction crew is installing an air barrier system on a commercial building's exterior walls. The chosen system uses a fluid-applied membrane over the sheathing. To ensure optimal performance and continuity, what is the most critical aspect to address during the installation of this fluid-applied air barrier?Thermal and Moisture Protection
  21. 221.A commercial general contractor is managing a multi-story office building project. During the excavation phase, the crew discovers an undocumented underground utility line that was not indicated on the contract drawings. This discovery requires a temporary halt to work and a redesign of a portion of the foundation. Which of the following contract clauses is MOST likely to address the contractor's entitlement to additional time and cost for this unforeseen condition?General Requirements
  22. 222.A general contractor is preparing a bid for a new commercial office building. The project specifications require the contractor to submit evidence of sufficient insurance coverage, including general liability, workers' compensation, and builder's risk. Which of the following is the PRIMARY reason for the owner to require builder's risk insurance for this project?General Requirements
  23. 223.A commercial general contractor is hired for a project with a fixed completion date. The contract includes a clause stating that for every day the project is delayed beyond this date, the contractor will pay the owner $1,500. This amount is a reasonable pre-estimate of the actual damages the owner would incur. What type of contract clause is this?General Requirements
  24. 224.A general contractor is installing a new cleanroom facility for a pharmaceutical manufacturing plant. The client specifies ISO Class 7 requirements. Which of the following is the most critical design parameter for the HVAC system to achieve and maintain this classification?Specialties and Equipment
  25. 225.A general contractor is evaluating bids from subcontractors for a complex mechanical system installation. To mitigate risk, the contractor wants to ensure the chosen subcontractor has sufficient financial capacity to complete the work and cover potential liabilities. Which of the following financial documents is MOST critical for the general contractor to review for this purpose?General Requirements
  26. 226.A general contractor is evaluating an invoice from a concrete supplier. The invoice indicates a '2/10 net 30' payment term. If the invoice amount is $15,000, and the contractor pays it on the 8th day, what is the net amount the contractor will pay?General Requirements
  27. 227.A commercial building renovation involves replacing deteriorated sealant joints around window frames. The existing sealant has failed due to excessive movement and UV exposure. The new sealant must accommodate significant joint movement, adhere well to dissimilar materials (aluminum frames and masonry), and offer long-term durability. Which type of sealant would be the most suitable for this application?Thermal and Moisture Protection
  28. 228.A general contractor is pouring a concrete foundation in hot weather conditions, with ambient temperatures consistently above 90°F (32°C). To prevent plastic shrinkage cracking, which of the following measures should be implemented immediately after concrete placement and finishing?Concrete
  29. 229.A concrete contractor is preparing to pour a 12-inch thick structural slab for a commercial building. The project specifications require a minimum concrete cover of 1.5 inches for all reinforcing steel exposed to weather. If the main reinforcement bars are #6 bars, what is the maximum recommended clear spacing between the horizontal main reinforcement bars to ensure proper concrete consolidation and bond?Concrete