ladder
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ladder
HB50
structure (fixed ladder) or device (portable ladder), consisting suitably and uniformly spaced cross-members (rungs or steps) for people to ascend and descend
See Figure A.34
See Figure A.34
Step-type ladders are used between 60° and 70° of angle, and rung-type ladders above 70°. Handrails and ladder cages may be required.
HB50
<paint> pattern in a paint film due to a miss in laying off which allows a strip of brushmarks in the opposite direction to remain undisturbed and visible