Spiral Staircase Railing Height

Tread path between handrail and center column a minimum 26 center tread width 7 1 2 in from the narrow end of the tread d.

Spiral staircase railing height.

Spiral staircase handrail true radius calculator enter actual rise of handrail for entered angle of rotation. Calculate spiral stair and circular stair geometry print spiral stair plan diagrams online free. Choose a height between 30 inches at the low end and 36 at the high end. Step 2 measure the height of the staircase using the same units as you used for the radius.

Spiral stair building code compliance. The reason for this is that as all the treads are set to a near 30 degree angle. Within this range there are standard radiuses on even decimeters. Weland manufactures spiral staircases with a radius of 600 to 1500 mm.

Of clear walking path. The staircase radius is the dimension from the staircase s centre to the outer edge of the handrail. Measure the radius of the spiral staircase using your tape measure. Stair railing height code measured vertically from the tread nosing shall be not less than 34 inches and not more than 38 inches handrail grip size type i handrails with a circular cross section shall have an outside diameter of at least 1 1 4 inches and not greater than 2 inches salter s standard circular handrail is 1 1 2 inch diameter.

Minimum stair diameter of 60 for a metal stair and 64 for a wood stair. The way this is measured is to begin at the leading edge of the stair nosing and run an imaginary vertical line upward until it reaches the top of the railing. Please review technical data sheet for additional information on measurements. Total height for rotation.

0 in dia spiral staircases have 26 in. Most straight stairs have a typical riser height between 7 7 5 whereas spiral stair riser height has a maximum riser height of 9 5. Use a level to make sure that the pencil reaches straight across the top of the railing to where you place the mark on the wall. This spiral staircase meets minimum 2015 irc requirements.

Step 2 measure up from the ground on each step to the desired height if there is no existing handrail on the staircase. This is the distance from the center of the center support pole to the outside edge of the staircase. Handrail height on the stairs should be no less than 34 inches and no greater than 38 inches.