Wash. Admin. Code § 296-870-60015 - Intermittent stabilization system
Note: |
This system may be used with a continuous tie-in guide system on the same building as long as the requirements for each system are met. |
(1) You
must make sure an intermittent stabilization system:
(a) Keeps the equipment in constant
contact with the building;
and
(b) Prevents sudden horizontal
movement of the platform.
(2) You must make sure building
anchors are located vertically so that:
(a) The distance between anchors is
not more than three floors or fifty feet (15.3 m), whichever is less;
and
(b) Attaching the suspension ropes
to the stabilizer ties will not cause the platform to move
horizontally across the face of the building.
(3) You must make sure the anchors
are positioned horizontally on the building face so as to be
symmetrical about the platform suspension ropes.
(4) You must make sure building
anchors:
(a) Are easily seen by
employees;
and
(b) Allow a stabilizer tie
attachment for each of the platform suspension ropes at each vertical
interval.
(5)
You must make sure building anchors that extend beyond the face of
the building have no sharp edges or points.
(6) You must make sure building
anchors do not interfere with the handling or operation of cables,
suspension wire ropes and lifelines that may be in contact with the
building face.
(7) You
must make sure the building anchors and components can sustain,
without failure, at least four times the maximum anticipated load
applied or transmitted to them.
(8) You must make sure the building
anchors and stabilizer ties can sustain the anticipated horizontal
and vertical loads from winds specified for roof storage design which
may act on the platform and wire ropes if the platform is stranded on
the building face.
(9)
You must make sure the minimum design wind load for each anchor is
three hundred pounds (1334 n) if two anchors share the wind
load.
(10) You must make
sure one building anchor and stabilizer tie can sustain the wind load
if either:
(a) The building anchors
have different spacing than the suspension wire rope;
or
(b) The building requires different
suspension spacings on one platform.
Notes
Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 47.17.060. 06-19-075, § 296-870-60015, filed 9/19/06, effective 1/1/07.
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