Concrete and Masonry Work Safety
64 flashcards covering Concrete and Masonry Work Safety for the OSHA OSHA 10/30 Construction section.
Concrete and masonry work safety focuses on preventing hazards like falls, silica dust exposure, and structural failures during construction activities such as pouring concrete, erecting forms, and handling materials. This is defined by OSHA's regulations in 29 CFR 1926 Subpart Q, which outlines specific requirements for construction sites to ensure worker protection in both general industry and construction environments.
On OSHA 10/30 Construction certification exams, this topic typically appears in multiple-choice questions that test recognition of hazards, proper use of personal protective equipment, and safe work practices, such as verifying form stability. A common trap is underestimating the risks of cumulative silica exposure, leading trainees to overlook the need for ongoing monitoring.
In practice, workers often forget to conduct pre-shift inspections of tools and equipment to catch potential issues early.
Terms (64)
- 01
What is the requirement for concrete bucket design under OSHA standards?
Concrete buckets shall be designed to prevent accidental dumping; they must have positive interlocking devices or other means to prevent dumping during personnel hoisting (29 CFR 1926.705(a)).
- 02
Under 29 CFR 1926.703, what must be done with formwork before concrete placement?
Formwork shall be inspected and approved by the engineer or responsible person to ensure it can support loads; it must be designed for the proposed loads and erection stresses (29 CFR 1926.703(a)).
- 03
How must reinforcing steel be protected to prevent impalement hazards?
Reinforcing steel shall be guarded to eliminate the hazard of impalement; caps or other protective devices must be provided (29 CFR 1926.701(b)).
- 04
What is required when removing formwork from concrete structures?
Formwork shall be removed in a manner that ensures the structure can safely support its own weight and any superimposed loads; it must be done under the supervision of a competent person (29 CFR 1926.703(e)).
- 05
What precautions are needed for post-tensioning operations in concrete work?
Employees shall be kept from the area where the stressing operation is being performed; protective covers or other barriers must be used to prevent access to stressed strands (29 CFR 1926.705(c)).
- 06
Under OSHA regulations, what is the general requirement for shoring in concrete construction?
Shoring shall be designed to support loads and maintained in a safe manner; it must be inspected prior to erection and after any alteration (29 CFR 1926.703(a)).
- 07
What must be done to ensure stability of precast concrete members during handling?
Precast concrete members shall be adequately supported to prevent overturning or collapse during handling and erection; rigging must be inspected (29 CFR 1926.704).
- 08
How should bulk concrete be stored to prevent hazards?
Bulk storage bins, containers, and silos shall be equipped with conical or tapered bottoms and mechanical or pneumatic means to start material flow; access doors must be guarded (29 CFR 1926.702).
- 09
What is the procedure for locking out equipment during concrete pumping operations?
Equipment shall be locked out and tagged out to control hazardous energy before maintenance or servicing; follow the lockout/tagout procedures (29 CFR 1910.147, as applied to construction).
- 10
In a scenario where concrete forms are overloaded, what action should be taken?
Immediately evacuate the area and have a competent person inspect and reinforce or remove the forms to prevent collapse; ensure loads do not exceed design capacity (29 CFR 1926.703(b)).
- 11
What defines a competent person in concrete and masonry construction?
A competent person is one who is capable of identifying existing and predictable hazards and who has authorization to take prompt corrective measures; this is required for inspections (29 CFR 1926.32(f)).
- 12
How often must bulk concrete storage bins be inspected?
Bulk storage bins shall be inspected before each use and after any repair or modification to ensure they are in safe condition; regular maintenance is required (29 CFR 1926.702).
- 13
What is the first step when erecting shoring for concrete forms?
Inspect all shoring equipment for damage and ensure it meets design specifications before erection; assemble according to the manufacturer's instructions (29 CFR 1926.703(a)).
- 14
If a worker is exposed to wet concrete on skin, what should they do?
Immediately wash the affected area with water and soap; seek medical attention if irritation persists, as wet concrete can cause chemical burns (29 CFR 1910.1200, Hazard Communication).
- 15
Under 29 CFR 1926.701, what is required for vertical concrete reinforcement?
Vertical reinforcement steel must be protected to prevent workers from falling onto exposed ends; caps or other guards shall be used (29 CFR 1926.701(b)).
- 16
What is the requirement for lifting concrete slabs safely?
Lifting inserts and hardware shall be capable of supporting at least five times the maximum intended load; ensure proper rigging and inspection (29 CFR 1926.704).
- 17
How must concrete mixers be operated to prevent hazards?
Concrete mixers shall have guards on all moving parts and be operated only by trained personnel; emergency stop devices must be accessible (29 CFR 1926.702).
- 18
What procedure must be followed before stressing tendons in post-tensioned concrete?
Ensure the area is cleared of personnel and that protective measures are in place to prevent access; verify equipment is in good condition (29 CFR 1926.705(c)).
- 19
In a scenario involving a concrete pour near an excavation, what safety measure is needed?
Protect workers from cave-in hazards by ensuring excavations are properly sloped or shored; coordinate with fall protection requirements (29 CFR 1926.651, as related to concrete work).
- 20
What is the general definition of formwork in concrete construction?
Formwork is the total system of support for freshly placed concrete, including the mold and all supporting members; it must be designed to handle all loads (29 CFR 1926.700(b)).
- 21
How often should concrete pumping equipment be inspected?
Pumping equipment shall be inspected before each shift and after any malfunction to ensure it is in safe operating condition; check for leaks and structural integrity (29 CFR 1926.702).
- 22
What is the first action when a concrete form shows signs of failure?
Evacuate the area immediately and notify a competent person to assess and stabilize the form; do not proceed with work (29 CFR 1926.703(e)).
- 23
If masonry walls are being constructed, what fall protection is required?
Fall protection systems shall be used when working at heights of six feet or more; guardrails or personal fall arrest systems must be in place (29 CFR 1926.501(b)(1)).
- 24
Under 29 CFR 1926.702, what is required for concrete buggies?
Concrete buggies shall be equipped with brakes or other means to prevent runaway; operators must be trained on safe handling (29 CFR 1926.702).
- 25
What must be ensured regarding ventilation when mixing concrete indoors?
Adequate ventilation shall be provided to prevent accumulation of dust or fumes; use exhaust systems if necessary (29 CFR 1926.57, as applied).
- 26
What is the procedure for handling hazardous chemicals in concrete mixing?
Follow hazard communication standards by labeling containers and providing safety data sheets; train employees on hazards (29 CFR 1910.1200).
- 27
How must workers be protected from silica dust in masonry work?
Use engineering controls like water sprays or ventilation to minimize exposure; provide respirators if needed (29 CFR 1926.1153).
- 28
What defines safe operation of a concrete vibrator?
Vibrators shall be equipped with insulated handles and guards; operators must wear appropriate personal protective equipment (29 CFR 1926.701).
- 29
In a scenario where concrete is being placed in a confined space, what is required?
Obtain a permit and follow confined space entry procedures, including atmospheric testing and attendant presence (29 CFR 1910.146, as applied to construction).
- 30
What is the requirement for eye protection during concrete work?
Workers shall wear eye protection when there is risk of exposure to flying particles or chemical splashes from concrete (29 CFR 1926.102).
- 31
How often must personal protective equipment be inspected for concrete workers?
PPE shall be inspected before each use to ensure it is in good condition; replace if damaged (29 CFR 1926.95).
- 32
What is the first step in responding to a chemical burn from wet concrete?
Flush the affected area with water for at least 15 minutes and seek medical help; remove contaminated clothing (29 CFR 1910.1200).
- 33
Under 29 CFR 1926.704, what is required for lifting precast concrete?
Lifting hardware must be designed to handle the load and be inspected; use multiple points for large panels (29 CFR 1926.704).
- 34
What must be done to prevent electrical hazards in concrete work near power lines?
Maintain safe distances from power lines and use insulated tools; de-energize lines if possible (29 CFR 1926.416).
- 35
How should masonry walls be braced to prevent collapse?
Walls over eight feet high shall be adequately braced or guyed until permanent supporting elements are in place (29 CFR 1926.706).
- 36
What procedure is needed for cleaning concrete tools?
Use appropriate methods to avoid exposure to hazardous substances; wear gloves and eye protection (29 CFR 1926.33).
- 37
In a scenario with high noise from concrete cutting, what protection is required?
Provide hearing protection for workers exposed to noise levels above permissible limits; monitor exposure (29 CFR 1910.95).
- 38
What is the definition of shoring in concrete construction?
Shoring is the vertical or inclined structural members used to support formwork or excavations; it must be capable of supporting loads (29 CFR 1926.700(b)).
- 39
How often must fall protection systems be inspected in masonry work?
Fall protection equipment shall be inspected before each use and after any event that could affect its integrity (29 CFR 1926.502).
- 40
What is the first action when a concrete mixer malfunctions?
Shut down and lock out the equipment; inspect for hazards before restarting (29 CFR 1910.147).
- 41
If a worker reports respiratory issues from silica exposure, what should be done?
Remove the worker from exposure and provide medical evaluation; implement controls to reduce dust (29 CFR 1926.1153).
- 42
Under 29 CFR 1926.705, what is required for personnel hoisting with concrete buckets?
Personnel shall not be hoisted in concrete buckets unless designed for that purpose and equipped with safety devices (29 CFR 1926.705(a)).
- 43
What must be ensured for the stability of concrete tilt-up panels?
Panels shall be braced and secured until permanently attached; use multiple braces as needed (29 CFR 1926.704).
- 44
How must concrete delivery trucks be operated on site?
Trucks shall have functional brakes and be chocked when parked; operators must follow traffic control plans (29 CFR 1926.601).
- 45
What procedure is required for demolishing concrete structures?
Ensure the structure is stabilized and workers are protected from falling debris; use engineering surveys (29 CFR 1926.850).
- 46
In a scenario involving concrete curing, what environmental controls are needed?
Protect curing concrete from extreme temperatures and drying; use covers or water as appropriate (29 CFR 1926.703(f)).
- 47
What is the requirement for guarding openings in concrete floors?
Openings shall be guarded by covers or guardrails to prevent falls; secure covers must be in place (29 CFR 1926.501).
- 48
How often should concrete form release agents be handled safely?
Always follow safety data sheets for handling; train workers on hazards before use (29 CFR 1910.1200).
- 49
What is the first step in setting up a concrete pump?
Inspect the pump and outriggers for stability and ensure the area is clear of personnel (29 CFR 1926.702).
- 50
If electrical equipment is used near wet concrete, what precaution is needed?
Use ground-fault circuit interrupters and ensure equipment is properly grounded (29 CFR 1926.416).
- 51
What defines proper use of a bull float in concrete finishing?
Operators shall wear slip-resistant footwear and avoid electrical hazards while using the tool (29 CFR 1926.701).
- 52
Under 29 CFR 1926.706, what bracing is required for masonry walls?
Masonry walls shall be braced to prevent collapse due to wind or other loads until permanent supports are installed (29 CFR 1926.706).
- 53
How must workers be trained on concrete hazards?
Provide training on recognition of hazards like chemical burns and falls; conduct annually or as needed (OSHA Outreach Training Program Requirements).
- 54
What is the procedure for storing precast concrete elements?
Store elements on stable foundations and secure them to prevent tipping; inspect storage areas regularly (29 CFR 1926.704).
- 55
In a scenario with a concrete spill, what cleanup method is required?
Contain the spill to prevent environmental contamination and clean up using appropriate absorbents; follow waste disposal rules (29 CFR 1926.20).
- 56
What is the definition of a competent person for inspecting formwork?
A competent person is one who can identify hazards in formwork and has the authority to correct them; required for all inspections (29 CFR 1926.32(f)).
- 57
How often must lockout/tagout be verified for concrete equipment?
Verify lockout/tagout procedures each time before servicing equipment; ensure energy sources are isolated (29 CFR 1910.147).
- 58
What action should be taken if noise exposure exceeds limits during concrete breaking?
Provide hearing protection and administrative controls to reduce exposure; monitor levels regularly (29 CFR 1910.95).
- 59
Under 29 CFR 1926.55, what gases might be present in concrete work?
Control exposure to gases like carbon monoxide from equipment; ensure ventilation (29 CFR 1926.55).
- 60
What must be done to prevent struck-by hazards from flying concrete debris?
Use barriers or screens to protect workers from debris; wear hard hats (29 CFR 1926.20).
- 61
How should concrete saws be operated safely?
Equip saws with guards and use at proper speeds; operators must wear eye and respiratory protection (29 CFR 1926.303).
- 62
What is the requirement for emergency eyewash stations near concrete mixing areas?
Provide eyewash facilities where corrosive materials are used; ensure they are accessible (29 CFR 1926.50).
- 63
In a scenario where a worker falls into wet concrete, what response is needed?
Immediately remove the worker and decontaminate; provide first aid and medical attention (29 CFR 1926.20).
- 64
What is the general rule for using cranes in concrete placement?
Cranes shall be operated by certified personnel and inspected daily; follow load charts (29 CFR 1926.550).