Glossary of Terms


Glossary vocabulary



Browse the glossary using this index

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O

OBSTRUCTION DETECTOR

A device that will stop the movement of a platform if an obstruction is encountered. It will then allow the unit to move away from the obstruction.

OCCUPATIONAL SAFETY AND HEALTH ACT

A United States Federal Law that regulates safe work practices affecting employees. Also known as OSHA.

OFFSET SADDLE PIN

A U-shaped base designed to fit a truss and provide an offset starting point for a vertical post.

OHS

Occupational Health and Safety - a provincial department responsible for enforcing the OHS code.

OPEN SIDES AND ENDS

The edges of a scaffold platform that exceed the maximum allowable horizontal distance away from a sturdy, continuous vertical surface (such as a building wall) or a sturdy, continuous surface (such as a floor). This is normally a distance of 14- to 16- inches, but may be greater or lesser depending upon the type of work to be performed on the platform and the particular safety standard under which the work is being performed.  In Alberta an open side is defined in the OHS code as 250 mm or 10 inches and some form of fall protection will be required if exceeded.

Orthographic

Orthographic Projection

Orthographic Projection is a way of viewing building plans, usually including a top view or plan view, front view and right side view.  Orthographic drawings frequently include section drawings and details as well as notes to aid in construction.

OSHA

OUTRIGGER (AERIAL PLATFORM)

A moveable extender of the platform.

OUTRIGGER (SCAFFOLD BASE)

Attachments which widen the base.


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