Mich. Admin. Code R. 408.41256 - Ladder jack scaffolds
Rule 1256.
(1)
A ladder jack scaffold shall be used only for light duty on type I manufactured
ladders at heights not more than 20 feet from the ground or floor level. The
ladder shall be used as prescribed in Construction Safety Standard Part 11.
"Fixed and Portable Ladders," as referenced in
R
408.41201.
(2) All bearing points of a ladder jack shall
be designed to bear on the side rails and the rungs, but if bearing on the
rungs only, the bearing area shall be not less than 10 lineal inches per
rung.
Notes
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