**between 34 and 38 inches above the floor**, or above the Nosing Line. Some installation guides suggest marking the height by measuring from the nosings of the steps.

What is the proper height for a toilet flange?

**toilet flange 1/2 above floor**.

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Handrail height on the stairs should be **no less than 34 inches and no greater than 38 inches**. 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.

On a stair, since handrail must be **between 34″ and 38″**, the handrail and the top of the guard can be one and the same. In commercial applications, the IBC requires a minimum height of 42″. On stairs, once there is a 30″ drop, a handrail will be required and placed between 34″ and 38″ above the nosing.

Handrail height for stairs according to the Australian standards is the height of a handrail above the floor or the nosing of a stair tread, shall be **no less than 865mm**. On a landing where fall from height is significant the height of the guardrail must be at least 1000 mm.

Handrails must be **between 30 and 38 inches** as measured from the leading edge of the stair tread. Stair rail system: Top rail may also serve as handrail if height of the system is between 36 and 38 inches.

The standard specifies that the top of the guardrail, which is the highest vertical point of the handrail structure, must stand **between 900mm-1,100mm from the top of the walkway or platform**. In instances where guardrails are used on staircases, the nosing height is the reference point.