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1. OSHA Subpart Q Concrete and Masonry Construction
2. Concrete Construction Protruding reinforcing steel, onto and into which employees could fall, shall be guarded to eliminate the hazard of impalement
3. Post-tensioning Operations No employee shall be permitted to be behind the jack during tensioning operations, except those essential to the jacking operation
Use signs and barriers to limit employee access to post-tensioning area during this operation
4. Placing Concrete with Buckets Riding Concrete Buckets is not permitted
7. Pumping Concrete Operator of the pneumatic hose must wear proper protective head and face equipment
8. Bulk Cement Storage Storage bins to have tapered or conical bottoms
No employee is permitted in the storage facility unless the ejection system is shut down, locked out, and tagged.
9. Power Concrete Trowels Powered, but manually guided, trowels shall be equipped with a control switch that will automatically shut off the power whenever the hands of the operator are removed
10. Concrete Buckets with Hydraulic or Pneumatic Gates Shall be equipped with positive safety latches or similar devices to prevent premature or accidental dumping
11. Bull Floats If used near energized electrical conductors, bull floats shall be constructed of nonconductive material or insulated with a nonconductive sheath.
12. Cast-in-Place Concrete Formwork shall be designed and constructed so that the forms will be capable of supporting, without failure, all vertical and lateral loads that can be reasonably anticipated.
13. Cast-in-Place Concrete Shores and reshores shall be inspected prior to use.
Erected shoring equipment shall be inspected immediately prior to, during, and immediately after concrete placement.
14. Cast-in-Place Concrete Sills for shoring shall be sound, rigid, and capable of carrying the maximum intended load.
15. When to inspect formwork shoring: Immediately prior to concrete placement
During concrete placement
Immediately after concrete placement
16. Shoring for Formwork Sills for shoring shall be sound, rigid, and capable of carrying the intended load
There shall be no eccentric loads on shore heads, unless for this purpose
17. Single post shores when used on top of another (tiered) The system shall be designed by a qualified design
The erected system shall be inspected by an engineer qualified in structural design
Single post shores shall be vertically aligned
Single post shores are not to be raised after concrete is placed
18. Reshoring Reshores are to be put in place as the original forms and shores are removed
Reshores are required when the concrete cannot support the loads
19. Vertical Slip Forms Steel rods and pipes on which jacks climb or by which the forms are lifted shall be designed for the purpose
Shall be provided with scaffolds or work platforms where employees are required to work or pass
Loads shall not exceed the rated loads of the jacks
20. Vertical Slip Forms The jacks or lifting devices shall be equipped with mechanical dogs or automatic holding devices to support the slip forms when the power supply or lifting mechanism fails
Do not exceed the predetermined safe rate of lift
21. Reinforcing Steel Reinforcing steel for wall, piers, columns and similar vertical structures shall be adequately supported to prevent overturning
Prevent unrolled wire mesh from recoiling
22. Removal of Formwork Forms and shores (except slab on grade and slip forms) shall not be removed until the concrete has gained sufficient strength to support its weight and superimposed loads
According to the plans and specs
Concrete strength has been tested
Don’t remove reshores until concrete
strength is adequate
23. Precast Concrete Includes wall units, structural framing and tilt-up wall panels
Shall be adequately supported to prevent overturning and collapse
Lifting inserts (tilt-up panels) shall be capable of carrying twice the intended load
Lifting inserts (members other than tilt-up) shall be capable of carrying four times the intended load
Lifting hardware to carry 5 times the intended load
24. Placing Concrete Members No employees hall be permitted under precast concrete members being lifted or tilted into position
Exception, employees required to be so located for the erection of those members
25. Lift Slab Construction Designed by a registered professional engineer
Jacks to support 2.5 times the load being lifted
All jacking points shall stay within 1/2” of that needed to maintain the slab in a level position
Only essential jacking personnel permitted in the structure when jacking is taking place
26. Masonry Construction Limited Access Zone - To be established whenever a masonry wall is constructed
27. Limited Access Zone Established prior to beginning construction of the wall
Runs the length of the wall
Horizontal projection that is equal to the wall height plus 4 feet
Established on the side of the wall that is not scaffolded
28. Limited Access Zone
29. Limited Access Zone Must remain in place until the wall is adequately supported to prevent overturning
If over 8 feet in height, the zone is to remain in place until the wall is adequately braced to prevent overturning. The bracing is to remain in place until the permanent supporting elements of the structure are in place.