What is the minimum size that must be provided for a temporary stairway platform landing )?

Asked by: Joe Spence

Stairways that will not be a permanent part of the structure on which construction work is being performed shall have landings of not less than 30 inches (76 cm) in the direction of travel and extend at least 22 inches (56 cm) in width at every 12 feet (3.7 m) or less of vertical rise.

What is the minimum length of a landing?

A width of a stair landing cannot be less than the width of the stair itself, and the length (in direction of travel) cannot be less than 36 inches, according to the Internation Residential Code (IRC 311.7.

What is the minimum width of a fixed stairway?

22 inches

Fixed stairways must have a minimum width of 22 inches. Fixed stairs must be installed at angles to the horizontal of between 30 degrees and 50 degrees. Any uniform combination of rise/tread dimensions may be used that will result in a stairway at an angle to the horizontal within the permissible range.

What is true about temporary stairs?

Temporary Stairs



No temporary spiral stairways are allowed, according to OSHA regulations, and employees cannot use stairs that are under construction until the metal pans have been filled, either with concrete or temporary wood, which should be replaced if they become worn below the top edge of the pan.

What is the standard height and width of stairs?

Standard Step Height



On average, American architects have used a standard stair height of 7.5 inches. On stairs built inside, the average tread width is 9 inches, while outside treads have an average width of 11 inches.

What is OSHA standard for stairs?

Riser height shall be from 6 to 7.5 inches (15.24 to 19.05 cm), stair width a minimum of 22 inches (55.88 cm) between vertical barriers, tread depth a minimum of 12±2 inches (30.48±5.08 cm), and tread nosing shall be straight leading edges. Stair landings shall be at least 20 inches (50.8 cm) in depth.

What is the minimum height of a stair riser?

4 inches

1009.4. 2 Riser height and tread depth. Stair riser heights shall be 7 inches (178 mm) maximum and 4 inches (102 mm) minimum. The riser height shall be measured vertically between the leading edges of adjacent treads.

What is the building regulations for stairs?

To stay within Building Regulations, a domestic staircase needs a rise of between 190mm and 220mm. Standard risers are around 200mm, so aim for this. The average rise is 2,600mm, which divides easily into 13 200mm risers, or steps. You can now calculate the number of treads.

What is the minimum and maximum tolerance of stair risers?

The angle of stairways should be between 20 and 45 degrees to the horizontal tread. It is recommended the angle be between 30 and 38 degrees. A single flight should have a minimum of two risers and maximum of 18 risers.

What size are stair treads?

between 8 and 10 inches long

Most stair treads measure between 8 and 10 inches long, with longer treads being used on larger staircases. Nine-inch stair treads are the most common lengths. To determine the length you need, simply measure from the back of the step to the front of the step.

What is a landing on a staircase?

A stair landing basically would be any intermediate platform located in the stairway. Itself these could be located at the top and the bottom of the stairway.