Systems Contractor Exam Questions

CA D75 Ceiling-Mounted Storage Systems Contractor Exam Questions And Correct Answers (Verified Answers) Plus Rationale2026 Q&A| Instant Download Pdf

• What is the primary purpose of a ceiling-mounted storage system?
• To support HVAC ducting
• To provide structural support to the ceiling
• To maximize storage space without using floor area
• To improve ceiling aesthetics

Rationale: Ceiling-mounted storage systems are designed to utilize

overhead space for storage, freeing up floor space.

• Which material is most commonly used for ceiling storage racks?
• Wood
• Steel
• Aluminum
• Plastic

Rationale: Steel is preferred for its strength, durability, and load-

bearing capacity.

• When installing a ceiling storage system, which of the following is

most critical?

• Color of the racks
• Ease of access
• Structural integrity of the mounting surface
• Brand of hardware used

Rationale: Ensuring the ceiling can support the weight is essential to

prevent failure. 1 / 3

• What type of fastener is generally recommended for attaching storage

racks to concrete ceilings?

• Wood screws
• Drywall anchors
• Expansion anchors
• Staples

Rationale: Expansion anchors provide strong, reliable fastening in

concrete.

• The maximum recommended load for a typical residential ceiling-

mounted storage rack is approximately:

• 50 lbs
• 250 lbs
• 500 lbs
• 1000 lbs

Rationale: Residential racks are designed for moderate loads;

exceeding limits risks ceiling damage.

• Which safety equipment is essential during installation?
• Gloves
• Safety goggles
• Hard hat
• Ear plugs

Rationale: Hard hats protect from potential falling tools or materials.

• Ceiling joists should be spaced no more than how many inches apart

for safe installation of storage racks?

• 12 inches
• 18 inches
• 24 inches
• 36 inches

Rationale: Most ceiling joists are 16–24 inches apart; proper spacing

ensures rack stability.

• What is the first step before installing a ceiling-mounted storage

system?

• Painting the ceiling
• Measuring floor space
• Locating and marking ceiling joists
• Ordering materials 2 / 3

Rationale: Identifying joists ensures the rack is anchored to

structural supports.

• Which tool is used to locate joists in a ceiling?
• Level
• Tape measure
• Stud finder
• Hammer

Rationale: Stud finders detect joists behind drywall or ceiling

surfaces.

10. For added safety, ceiling racks should be anchored to:

• Plaster only
• Structural joists
• Drywall
• Ceiling paint

Rationale: Anchoring to structural joists ensures the rack can safely

support weight.

• What type of ceiling is least suitable for heavy storage

installations?

• Concrete
• Exposed beams
• Drop ceiling
• Steel frame ceiling

Rationale: Drop ceilings cannot bear significant weight and may

collapse.

• How often should load capacity labels be checked for ceiling-

mounted storage racks?

• Once a year
• Every 5 years
• Before each use
• Never

Rationale: Checking load limits ensures safe usage and prevents

overloading.

• What is a common method for increasing the strength of a

ceiling-mounted storage system?

• Painting the rack
• Using plastic anchors
• Adding cross braces
• / 3