The top of your porch railing should never be higher than the top of the window sill. Many railing incidents occur in assembly occupancies that have their own set of guard rail requirements.
For a single-family living in a detached home the handrail height in Ontario is 36 inches.
What is the standard height of a deck railing. A guardrail is typically required for stairs with 4-or-more risers or for a deck or balcony with 30 inches above grade. If theres a railing people will lean on it expecting it to hold them. Note that some local jurisdiction or state require higher such as 42 in California.
The top of the handrail should be at least 34 inches. The IRC requires guardrails to be at least 36 in height measured from the deck surface to the top of the rail. That may mean that your original porch railing is only 24 inches high above the porch floor a common height.
The same gap is allowed between the decorative elements of the deck railing. Lower level decks are those which are raised no more than 300mm off the ground. The minimum height for this guard is 36 inches.
Commercial decks attached to multi-family buildings such as apartment buildings or businesses are regulated under the International Building Code IBC. The standard handrail height depends on the elevation and the area of your home. Sight line-constrained rails must have a height of not less than 26 inches.
Stair rails on decks should be between 34 inches and 38 inches high measured vertically from the nose of the tread to the top of the rail. Be sure to check with your code. When looking out the window from indoors the porch railing.
Railing systems at the foot of aisles shall not be less than 36 inches high. The minimum height of the railing varies based on the height of the deck. The code has some very specific requirements for deck stairs.
For this platform height in a domestic property any railings or balustrades should be at. Decks four metres 4m from the ground or higher need to meet additional design requirements. Decks 30 inches or more above grade require a safety railing that is at least 36 inches high.
Some areas require taller guardrail. 30 inches or less. Keep in mind that although you may add a rail to a deck thats less than 30 inches above grade that railing still needs to adhere to these safety requirements.
In other words a deck less than one metre 1m above ground is not required to have a handrail though depending on the height it may still be recommended. Decks 24 to 5-10 180 cm need 36 guards and anything above 5-10 requires a 42 high railing. The maximum space between the bottom rail and the surface is 4.
Whatever the height of the decking there should be no gaps big enough for a 100mm sphere to pass through it. The IRC specifies that deck stair railing should measure between 34 and 38 inches high so homeowners may wish to use railing that is even higher than 34 inches for their deck stairs. Install railings on any deck that is 30 inches or more from the surrounding surface and on at least one side of a stairway leading to the deck.
The IRC requires guardrails to be at least 36 in height measured from the deck surface to the top of the rail. Deck railing height should be a minimum of 36 for any platform elevated to 30 and more from the surface. If the elevation of your deck is more than 30 inches you definitely need a handrail.
The theory is that a person may become injured by falling off of an 18 inch-high deck for example but nowhere near as severely as if that person fell 8 feet down. This includes the space between the platform and the top rail. Commercial decks attached to multifamily buildings such as apartment buildings or businesses are regulated under the Internation Building Code IBC.
As with exterior decking no guards or rails are needed if the surface is close enough to the ground. Code requires guardrail in residential structures be a minimum of 36 inches. The IBC requires 42 high guardrails.
Treads must be at least 10 inches deep measuring from front to back. Guards are required when then deck is 24 60 cm above grade.