According to "Joinery and Carpentry" by Richard Greenhalgh and others, which was current when I served my time between 1956-1961 (sorry the books are not dated) the recommended minimum height for stair handrails was between 2'7" and 2'9". We used the average of 2'8" or 34" I do not know if that was a fixed code requirement in those days.
This measurement is taken vertically from the nose or the tread to the top of the handrail.
See this sketch http://www.builderbill-diy-help.com/image-files/balustrade.gif
Modern codes such as the BCA where I live state that the minimum height should be 865mm which is 34" which as you can see, it has not changed at all.
What has changed is the height of the Handrail or balustrade on the landings.
In the BCA it is now 1050mm which is 41" or 3'5". In the 1950's and for a long time after it was 36" or 3'.
Cheers
Bill
42 inches
Standard minimum railing height is 36" from finished floor, according the the IRC 2003 building code.
The general building regulations for the United States are typically called building codes. Building codes vary from state to state and county to county. Basically they are a set of rules that specify minimum acceptable level of safety for constructed objects such as buildings and structures.
According to Building Control Regulations, the DPC should be a minimum of 150mm above external finished ground level.
This depends on the regulations in your area. Some countries or states have minimum area, size, height rules under which no submitted plans are necessary.
I'm certain that there is some type of requirement of that type. Local building codes are seldom (if ever) available on-line. Contact your local building code enforcement office.
The minimum viable population of domestic cats in the hundreds. There will likely never be an extinction of cats though.
The distance between the wall and handrail gripping surface is also governed by local code with the most common requirement being 1-1/2" (38 mm) minimum. The National Fire Protection Agency (NFPA) requires that the distance between the wall and handrail be a minimum of 2-1/4" (57 mm). The 1992 Americans With Disabilities Act Accessibility Guidelines (ADAAG) stated that there was to be an absolute dimension of 1-1/2" between a handrail and a wall. This was actually a "grab bar" dimension which was part of the 1986 ANSI A117.1. ANSI changed the notation to 1-1/2" minimum in 1990. This was not corrected in ADAAG until 2004 which now calls for a 1-1/2" (38 mm) clearance. Codes also generally require that there be a 1-1/2" clearance between the underside of the handrail and any obstruction -- including the horizontal bracket arm. There is an allowance however for variations in the handrail size -- for every 1/2" of additional perimeter dimension over 4", 1/8" may be subtracted from the clearance requirement.
Ideally a domestic freezer should be a minimum of -18 centigrade.
help!!
3 feet The ideal height is 33" with an acceptable range of 3". In other words it can be anywhere between 30" and 36" above the nose of the tread to the top of the rail. But if you want to be sure and be "legal" in your area, check with the local building inspector.
It will vary by country. For example, in the US the minimum visibility is 3 miles.