Inspecting Fabricated Frame Scaffolds
Scaffold Plumb
Supported scaffold poles, frames, uprights, etc. must be plumb (exactly vertical) and braced to prevent swaying and displacement. In general, a level is the easiest way to achieve the desired right angles.
Scaffold Capacity
Inspecting the Support Structure
To control the risk of a scaffold falling or collapsing, employers must assure that scaffolds are built within OSHA standards relating to strength and structural integrity.
Note: Except where indicated, these requirements also apply to manually propelled, pump jack, ladder jack, tube and coupler, and pole scaffolds, as well as the specialty scaffolds described in their applicable sections.
Capacity
It's critical to check to make sure scaffolds do not exceed their rated capacity.
- Check that scaffolds and scaffold components are capable of supporting, without failure, their own weight and at least 4 times their maximum intended load.
- Ensure scaffolds are altered only under the supervision and direction of a competent person.
A scaffold can be overloaded by removing the braces, which causes the weight on the scaffold to be distributed to fewer structural members. Even if they are "in the way," braces should not be removed while work is being performed on a scaffold!
A competent person checks the capacity of a supported scaffold by:
- Reviewing Specifications: Examining the scaffold's design and manufacturer specifications to determine its maximum intended load and load-carrying capacities.
- Inspecting Physical Condition: Checking for any signs of wear, damage, or alteration that might affect the scaffold's capacity.
- Ensuring Proper Construction: Verifying that the scaffold has been erected in accordance with its design and manufacturer instructions.
- Assessing Load Distribution: Ensuring that loads are evenly distributed and do not exceed the specified limits.
- Regular Monitoring: Continuously monitoring the scaffold for any changes or additions that might affect its capacity.
Knowledge Check Choose the best answer for the question.
2-4. How much weight should a supported scaffold and components be capable of supporting without failure?
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