In nyc railings must comply with 2014 nyc building code section 1013 and 1607.
Roof railing height.
Stair treads must sustain a weight of at least 300 pounds in an area no more than four inches square.
Top edge height of top rails or equivalent guardrail system members shall be 42 inches 1 1 m plus or minus 3 inches 8 cm above the walking working level.
In general industry osha standards say the guardrail height railing must be 42 high.
In new york city roofs balconies or terraces with slope of 2 4 12 or less and height of 22 feet or greater require railings per 2014 nyc building code section 1509 8.
Required on stairs with four or more risers.
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.
1910 29 b 1 the top edge height of top rails or equivalent guardrail system members are 42 inches 107 cm plus or minus 3 inches 8 cm above the walking working surface.
2 x 4 stock not more than 6 feet apart.
Often older buildings may comply with the code under which they were constructed.
Decks 24 to 5 10 180 cm need 36 guards and anything above 5 10 requires a 42 high railing.
But in the construction industry osha states the proper response is 42 plus or minus 3.
30 to 34 inches in height.
The top of the handrail should be at least 34 inches.
1910 29 b 1 the height of top rails must be 42 inches plus or minus 3 inches above the walking working surface.
This is what you need to do.
Intermediate rail at about halfway up what to use for railings.
When conditions warrant the height of the top edge may exceed the 45 inch height provided the guardrail system meets all other criteria of this paragraph.
Osha railing requirements for stair railing.
Step 1 construct an architecturally correct balustrade with a railing height of 27 25 inches your window height or.
The top edge height may exceed 45 inches 114 cm provided the guardrail system meets all other criteria of paragraph b of this section see figure d 11 below.
Step 2 install a 2 x 3 or 2 x 4 piece of lumber parallel to the top hand rail with the top of that piece being 36.
In the construction industry your rail is compliant if the top railing falls between 39 from the walking surface and 45 from the walking surface.
1 1 2 nominal diameter not more than 8 feet apart.
Treads must be at least 10 inches deep measuring from front to back.