Alternating Tread Type Stairs

Spiral ship or alternating tread type stairs are used only when the employer can demonstrate that it is not feasible to provide standard stairs. Designed to be used as a stair with users facing the direction of travel when climbing up and down. Choose an alternating tread stair for applications where space is limited choose alternating tread stairs.

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Alternating tread type stairs.

56 stairs are available in heights from 36 to 240 and have a riser height of 6 416 to 7 7. 68 alternating tread stairs require the least amount of space but the steeper angle is less comfortable to use. Alternating tread stairs are manufactured to comply with applicable industrial and or commercial codes. 1910 25 b 9 when paragraph b 8 of this section allows the use of spiral ship or alternating tread type stairs they are installed used and maintained in accordance with manufacturer s instructions.

In order to provide safety for employees who might use such stairs it must be designed installed used and maintained in accordance with the manufacturer s recommendations and in accordance with the following requirements. Check your local code requirements for residential compliance. The alternating tread ladder stair is a variation on the ladder stair theme. Stair slope of either 56 or 68 degrees requires a smaller overall footprint than a standard stair.

Currently osha has no standards relating to the alternating tread type stair. It is the responsibility of the customer to ensure code compliance. The less steep angle of 56 alternating tread stairs is more comfortable to use while also requiring less space. All erectastep stairs comply with osha standard 1910 25 which covers all stairways including standard spiral ship and alternating tread type stairs.

Get a quote for custom stair heights. Osha classifies alternating tread stairs alternating tread devices as non standard stairs and states they are acceptable to use in applications where it is not feasible to use standard stairs. Alternating tread stairs are custom built to your exact height specifications. The unused half tread is removed to provide more tread depth for improved safety and comfort.

As an employer it is your responsibility to ensure all workers have adequate fall protection and falling object protection including handrails stair rail systems and guardrail systems. 1910 25 b 8 maximum safety minimum space alternating tread stairs are safer and more comfortable than other space saving devices. Shoes must be worn when using alternating tread stairs. See below for pricing in six inch increments.

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