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1. 1
2. 2 51 killed
170 feet above ground
Entire form peeled away from newly placed concrete
Cooling TowerSt. Mary’s West Virginia 1978
3. 3
4. 4
5. 5
6. 6 Part 1926 Subpart QConcrete and Masonry Construction 1926.700 - Scope, application, and definitions applicable to this subpart.
1926.701 - General requirements
1926.702 - Requirements for equipment and tools.
1926.703 - Requirements for cast-in-place Concrete.
7. 7 "Bull float"
"Formwork"
"Lift slab"
"Limited access zone"
"Precast concrete"
"Reshoring"
"Shore"
"Vertical slip forms"
“Jacking operation” 29 CFR 1926 700 Scope, application, and definitions applicable to this subpart.
8. 8 (a) Construction loads.
(b) Reinforcing steel.
(c) Post-tensioning operations.
(d) Riding concrete buckets.
(e) Working under loads.
(f) Personal protective equipment.
29 CFR 1926.701General requirements
9. 9
10. 10
11. 11
12. 12
13. 13
14. 14
15. 15 (a) Bulk cement storage.
(b) Concrete mixers.
(c) Power concrete trowels.
(d) Concrete buggies.
(e) Concrete pumping systems.
(f) Concrete buckets.
(g) Tremies.
(h) Bull floats.
(i) Masonry saws.
(j) Lockout/Tagout procedures.
702 Equipment and Tools.
16. 16
17. 17
18. 18
19. 19
20. 20
21. 21
22. 22
23. 23
24. 24
25. 25 (a) General requirements for formwork.
(b) Shoring and reshoring.
(c) Vertical slip forms.
(d) Reinforcing steel.
(e) Removal of formwork. 29 CFR 1926.703 Cast-in-place Concrete.
26. 26
27. 27
28. 28
31. 31
32. 32
33. 33
34. 34
36. 36
37. 37
38. 38
39. 39
40. 40
41. 41 (a) Adequate support of wall units, structural framing, and tilt-up panels
(b) Capability of inserts
(c) Imbedded inserts
(d) Lifting hardware
(e) No employee under pre-cast concrete members being lifted or tilted into position except those employees required for the erection of those members
1926.704 Pre-cast Concrete.
42. 42
43. 43
44. 44
45. 45 29 CFR 1926.705 lift-slab operations.
46. 46 (a) Lift-slab operations shall be designed and planned by a registered professional engineer
(b) Jacks/lifting units shall be marked
(c) Jacks/lifting units shall not be loaded beyond their rated capacity
(d) Jacking equipment shall not be overloaded
(e) Design and installation of jack lifting units
29 CFR 1926.705 lift-slab operations.
47. 47 (f) Jacks/lifting units shall have a safety device installed
(g) Jacking operations shall be synchronized
(h) Automatic controlled leveling (i) Manually controlled leveling
(j) Maximum number of manually controlled jacks/lifting units
(k) Number of employees allowed in the building
29 CFR 1926.705 lift-slab operations. (continued)
48. 48 (l) Temporary connections
(m) Welding on temporary and permanent connections
(n) Load transfer from jacks/lifting units to building columns
(o) Securing Jacks/lifting units
(p) Prevention of components from disengaging during lifting operations. 29 CFR 1926.705 lift-slab operations. (continued)
49. 49
50. 50
52. 52
53. 53
54. 54
55. 55
56. 56
57. 57
58. 58 a) Limited access zone
prior to the start of construction of the wall
equal to the height of the wall to reconstructed plus four feet, and shall run the entire length of the wall
on the side of the wall which will be un-scaffolded
restricted to entry by employees actively engaged in constructing the wall
shall remain in place until the wall is adequately supported
(b) All masonry walls over eight feet in height shall be adequately braced 29 CFR 1926.706 Masonry construction.
59. 59 1926.706(a) Limited access zone