As the angle of ascent decreases the hatch must be larger to prevent head bumping accidents.
Lapeyre stair roof hatch.
Space saving safety stair with alternating tread design for steep applications in lieu of ships ladders and vertical ladder.
Alternating tread stairs are built to exact vertical height.
The angle at which a person ascends to the roof determines the size hatch required for convenient use.
For roof hatch applications.
It rhymes with stair read our story.
These highly adaptable stairs meet relevant building codes and create a safer work environment.
A variety of special sizes are also available to provide an accessible way to install or remove large pieces of equipment from a building.
This shortened rail extends 5 3 4 above the top landing of the stair and is designed for use within a roof hatch or a hatch with a standard 12 curb.
Lapeyre stair s alternating tread stair is ergonomic improves safety and is efficiently designed.
Bilco roof hatches provide safe and convenient access to roof areas by means of an interior ladder ship stair or service stair.
All products feature engineered lift assistance for easy one hand operation.
This design allows comfortable face forward descents at steep angles.
The lapeyre stair features a unique alternating tread design which provides greater tread depth than vertical ladders or ship s ladders.
Selecting the proper size hatch.
How to measure for a roof hatch installation head clearance osha 1910 25 b 2.
Roof hatch design as previously mentioned roof hatches provide workers along with their tools and equipment easy access to roof areas.
Special guidelines apply when measuring for alternating tread stairs that will be used to access a roof hatch.
The lapeyre alternating tread stair offers a cost effective secure alternative to vertical ladders and steep stairs.
For roof hatches the height is measured from a where the top landing of the stair is flush with the finished surface of the roof to b the lower finished floor where the foot of the stair will be secured.
The stair includes close fitting handrails which provide support and a cushioned central.
The most common types of hatches that serve this purpose are single leaf models which have one cover and accommodate a single person.
Measuring guidelines for roof hatch applications.
This is the most commonly used option for stairs going through an access.
Lapeyre originally coined the name lapeyre stair when he filed the patent on his alternating tread stair design and it was later adopted as the business name when the company was founded.
If a ladder is used the hatch may be rather small since the person comes straight up to the roof.