See code for other limitations e g number of stories and or floor area limits based on the buildable area of the lot aka floor area ratio.
Roof deck design height limit lowered railing.
In the usa if your porch floor is less than 30 inches high from the ground a porch railing is not required by code.
50 lb concentrated load over 1 sqft or balusters.
Decks without railing pictures ideas designs picture search filters any deck type ground level deck second story deck pool deck first story deck porch curved deck multi level deck roof deck.
The irc requires guardrails to be at least 36 in height measured from the deck surface to the top of the rail.
Although not specifically referenced in the irc dca 6 2015 the deck design guideline from the american wood council can be used to design a deck.
If you choose to install a guardrail on a deck lower than 30 you must still meet code requirements.
Likewise elevator penthouses are exempted to a maximum of 16.
50 lbf vertical and horizontal load along top rail.
Respect minimum height requirements safety is important and something that should always supersede style.
4 maximum gap between balusters.
The planning code exempts stair penthouses to a maximum 10 feet above the prescribed height limit provided they do not exceed 20 percent of the roof area.
Code nyc bc requires that all buildings greater than 22 feet tall with low slope roofs and terraces have a 42 inch tall parapet railing or fence.
200 lb concentrated load.
Residential design advisory team rdat and do not require a pre application meeting or section 311 neighborhood notification.
If your porch floor is over the heights stated the code requires a balustrade porch railing.
Height limits shown above are measured in feet.
Deck guardrails guards should rise to at least 36 inches above the residential deck level.
Decks attached to single family detached homes are regulated under the rules of the international residential code irc.
4 maximum gap between deck and underside of bottom rail.
Additional documents may be available in some regions.
On the surface this seems to line up with ibc and osha regulations but there is one crucial difference.
The nyc bc does not limit this require ment to accessibleroof areas.
The minimum height of the railing varies based on the height of the deck.
2018 irc significant changes to deck provisions 25 deck design alternative provisions r301 1 1 other standards can be used to design a deck.
Commercial deck guardrails such as those found at restaurants bars and at multifamily homes such as apartments or condos are required to be 42 inches high minimum.
This is a minimum required height for residential structure higher guards are acceptable.
Deck guardrail height.
Decks 24 to 5 10 180 cm need 36 guards and anything above 5 10 requires a 42 high railing.
34 minimum stair rail height from nosing to top of rail.
