The simplest form of steel stairs is a straight flight without winders or landings. Steel stairs can take a virtually infinite number of different forms when winders and landings are combined.
The most common general types of construction for a steel staircase are checker plate, grating and poured-in-place.
Checker plated stairs have a raised pattern on sheet steel to make them slip resistant. Grating stairs consist of a steel bar grating that is welded to a checker plate nosing. Poured-in-place industrial steel stairs consist of pans formed by sheet steel that are ready for concrete fill.
Several trademarked construction types of pre-engineered steel stairs are available. They are:
- Endura, which has a non-slip grit surface bonded to reinforced cement board and backed with sheet steel;
- FasTrack, which bonds the non-slip surface directly to the sheet steel;
- Ready Step, which bonds the non-slip surface to a sound absorbent, non-combustible fiber that is backed by sheet steel.
Determine the desired construction for iron and steel stairsThe trademarked construction types of iron and steel stairs are generally more durable and expensive than the non-trademarked methods. A manufacturer that specializes in commercial iron stairs should be able to explain the advantages and disadvantages of each type.
Ensure your commercial iron stairs meet the required safety regulationsThe Occupational Safety & Health Administration provides safety regulations on many different items, including industrial stairs. All steel stairs contractors should be familiar with the relevant OSHA regulations. Be wary of doing business with one that isn't up-to-date on OSHA specs.
OSHA regulation 1910.24. Find stairs that far exceed OSHA recommendations at SlipNot.
Find a steel staircase supplier in your areaAll building components must comply with local regulations. Stairs are potentially hazardous so the building codes concerning these structures tend to be especially lengthy. Local contractors already should be familiar with these codes.
- As a rule of thumb, the minimum required tread length for an iron staircase should be at least 9 inches. The riser height should be a maximum of 8.25 inches. Therefore, the slope for a set of stairs should be limited to a maximum of tan -1 (8.25/9) = 42.5 degrees.