1. Top edge height of railing 0.95 M. (38”) Min.
2. Top edge height of railing 1.15 M. (45”) Max.
3 GR downward loads 90 KG.
4. GR and wall distance more or less ( 14”) if
more than GR must .
5. Use Fall Body Harness shall be rated of
capacity at least 2,260 KG.
6. Lifeline fastens in capable 2,300 KG.
7. Lifeline wire rope 10mm Min. diameter.
8. Toe board height 4” Min.
9. Toe board thick 1” Min.
10. Toe board and working plate bet. Gaps not more than 6mm.
11. Toe board must be load and downward 23 KG.
12. Headroom two flooring Min.1.8 M. and Max.
2.0 M.
13. Stairways ladder gap 30” Min. and wide 22”
Min.
14. Temporary stair riser height 6” Min., 8”
Max.
15. Temporary stair tread depth 9” Min., 11”
Max.
16. Riser and tread depth not more than 6mm.
17. Temporary stairways handrail Min. 35”,
Max. 37”.
18. Handrail should be anywhere can lift at 90
KG.
19. Stairways door less than 20”.
20. High wind requirements velocity 65 KPH (
40 MPH ).
21. Wood and aluminum ladder not painted.
22. Ladder rungs between 10” to 14” on center.
23. Ladder rungs spacing 12” preferable.
24. Ladder slope 4 vertical and 1 horizontal.
25. Ladder above landing flat form 900mm (3
FT.) Min.
26. Bottom rungs not more than 2 FT.
27. Ladder projecting objective away Min. 24”,
Max. 30”.
28. Minimum toe ladder at the top 4”.
29. Rungs length 16”.
30. Step ladder max. Length 6 M.
31. Floatation ring provide intervals not more
than 15 M. apart.
32. Job made ladder length Max. 4.5 M.(15
FT.).
33. Single rung 25 work men’s only if more
than use double rung.
34. For side rail lumber use 2”x 4”.
35. Double rung ladder 3.6 x 4.5 M. in length.
36. For side railings use 2” x 6” lumber.
37. Rungs length 20”, 20mm THK. 80mm WIDTH.
38. Rungs length more than 20” to 30”, 20mm THK,
95mm WIDTH.
39. Rungs should be inside 13mm.
40. Platform and toe board gaps between Max.
6mm.
41. Ladder extension 11 M. overlap 1.2 M. Min.,
14.6 M. overlap 1.5 M. Min.
42. Scaffolding tube outside dia. 48.3mm.
43. Girder coupler always in pair.
44. Right angle –double or load bearing
coupler class EN74-B, SWL 9.4KN (940KG.).
45. Swivel coupler class A SWL 5.3 KN (530
KG.).
46. End to end sleeve coupler tension class B
300 KG., bend class B 59 KG.
47. Bearer single putlog SWL 53 KG.
48. Wood plank marked BS2482
49. Wood plank thick 38mm (1-1/2”), wide 225mm
Min.
50. Wood plank spot not more than end 1”.
52. Twist not more than 13mm.
53. Sole boar under jack long 675mm Min.
(30”).
54. Base plate 150 x 150 mm (6”x 6”), 6mm THK.
(¼”).
55. Jack-up to half treads Max.
56. Tie –first tie if wide 2M then tie first
one 8M if wide 4M first one 16M.
57. First to second distance 9M and general
height vertical 8M gap.
58. Raker ratio tube length 6.4 M. no joints
other tube.
59. Raker two standard joint above raker only
one lift.
60. Plank thick. 38mm (1-1/2) not exceed 1.5M,
50mm (2”) thick gap cover 2.4M.
61. Transom min.6” over (150mm), overhang max.
12” (300mm) Min.
62. Between plank gap 1” ok if more cover.
63. Gap less than 600mm (24”) cover with
plywood thick 20mm.
64. Plywood overlap both side Min. 12” if gap
more than 600mm (24”) cover w/ plank.
65. Platform landing min.27” (675mm) wide, 36”length.
66. In height landing flat form every 9M. Max.
67. Internal ladder 27” wide (675mm), 36” (900mm)
Length.
68. External ladder wide open side (entrance)
Min.27” (675mm), Max.30” (760mm).
69. Applied voltage less than 300V, 1M. Distance,
Insulated line more than 300V, 3M.more
500V, 3M. +4” 1KV =50 KV.
70. Un insulated less than 500V 3M.distance,
more than 500V 3M. +4” 1 KV.
71. Base of scaffold away from excavation 1.5
M. Min.
72. Gin wheel scaffold to outside distance
Max.30”(750mm).
73. Lift wheel –weight 50 KG. Max.
74. Rope for wheel lifting 18mm dia.
75. Plan horizontal for bridge in and out
cross bracing light duty.
76. Ladder beams 2 bay bridges, medium duty.
77. Unit beam medium / heavy duty.
78. Brace pipe not more than 12”(300mm) away
from node point.
79. Brace overlap joint together with swivel
coupler joint at least 12” overlap.
80. Bearer (Transom) board bearer should
extend beyond the runner (ledger) 4” (100mm).
81. Base of runner-transom 1st lifts
6”9160mm).
82. X brace can leave 2 bays in high position,
3 bays in length position.
83. Max. 4 bay can leave in cross brace.
84. For embosted light duty scaffold bay 1 x
2.7 M. and 1.2 x 2.4 M. allowable.
85. For non embosted 1 x 2.3 M and 1.2 x 1.8
M.
86. Base tube O.D. 48.3mm thick wall 3.2mm.
87.
Tower and mobile
scaffolding every third level should be plan brace.
88. Mobile scaffold and ladder always on the
narrow side.
89. Mobile scaffold for light duty wheel dia.
5”(125mm) Min.
90. Medium duty wheel dia. 7”(175mm) Min.
91. Height of fabricated frame scaffold 6 M.
Max.
92. Bracket scaffold use only for light duty
120 KG. / SQ.M.
93. Bracket strip length 10” (250mm) width 3”
(75mm) thick. 10mm.
and top weld 3” both side and 1” at the side.
94. Wire rope for railing of bracket scaffold
is dia. 10mm. Min.
95. Bracket width 27”(675mm) max.
96. High sleeve or spigot on base 150mm height.
97. Aramco welding certified inspector can
inspect the bracket strap.
98. Approval of welding procedure proponent
engineering.
99. Trapeze tube fixes Max. 2 FT.(600mm) and
Min. 1.5 FT. below.
100. For bracket
scaffold overlap Min.230mm(9”).
101. Beam coupler use
only for hanging scaffold but should be drop forged coupler.
102. Hanging scaffold
wire rope dia. 9mm Min. load 6 times intend.
103. Wire rope clip end
of wire fix 3 pcs.and that gaps between the clip 6 rope dia.
104. U-bolt in that side
saddle on live side of the rope.
105. Any kind of
scaffold more than 4 legs called base supported scaffold.
106. Tower scaffolds only 4 legs.
107. Scaffoldings more
than 2 lines of post or hanger tube across with called
with birdcage scaffold.
108. Handrail of
temporary stairways Min.34” and Max.37”.
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