Deck railing height is a minimum of 36.
Balcony railing height.
Commercial decks attached to multifamily buildings such as apartment buildings or businesses are regulated under the internation building code ibc.
C the top of stair railings handrails and handrail extensions installed on or after april 3 1997 shall be at a vertical height between 34 and 38 inches above the nosing of treads and landings.
For business or fencing use the railings should be 42 or 48 inches.
The permissible tolerance on height dimensions is one inch.
The ibc requires 42 high guardrails.
In some states such as california the minimum height is 42.
For stairs installed before april 3 1997 this height shall be between 30 and 38 inches.
Decks 24 to 5 10 180 cm need 36 guards and anything above 5 10 requires a 42 high railing.
A a standard guardrail shall consist of top rail midrail or equivalent protection and posts and shall have a vertical height within the range of 42 inches to 45 inches from the upper surface of the top rail to the floor platform runway or ramp level.
The irc requires guardrails to be at least 36 in height measured from the deck surface to the top of the rail.
There is no maximum height.
A railing is only necessary if the deck is 30 or more off the ground and 24 in certain jurisdictions.
The minimum height of the railing varies based on the height of the deck.