There is also nothing in the Constitution about speed limits, driver's lic and a multitude of other things that must be regulated
Bureau of weights and standards ( or similar terms) in each state does it as well as national agencies promulgating standards...or would you rather leave it open to any Tom, Dick and Harry to say what the size/weight/capacity is of something he is selling?
Combination ladder sizes are measured differently than step and
extension ladders. From the ANSI standard:
American National Standard for Ladders — Portable Metal — Safety
4. Definitions and Nomenclature
combination ladder. A portable ladder capable of being used either as
a stepladder or as a single or extension ladder. It may also be
capable of being used as a trestle ladder or a stairwell ladder. Its
components may be used as single ladders.
extension ladder. A non-self-supporting portable ladder adjustable in
length. It consists of two or more sections traveling in guides or
brackets or the equivalent and so arranged as to permit length adjustment.
stepladder. A self-supporting portable ladder, non-adjustable in
length, with flat steps and a hinged base.
6.1.1 Stepladder Size. Stepladders longer than 20 feet shall not be
supplied. The size shall be measured along the front edge of the front
side rail, including top cap and foot, with a tolerance of ±1/2 inch.
Heavyduty (type-I) and extra-heavy-duty (type-IA) ladders shall be 3
to 20 feet; medium-duty (type-II) ladders shall be 3 to 12 feet; and
light-duty (type-III) ladders shall be 3 to 6 feet in length (see
6.2.4 Extension-Ladder Size. The size of an extension ladder is
designated by the sum of the lengths of one side rail of each section
measured along the side rails, excluding any foot or end cap. A
tolerance of ±3 inches per section shall be allowed. Extension ladders
shall not exceed the sizes specified in Table 1.
Extension ladders shall be marked to indicate both the total length of
sections and the maximum extended length or maximum working length.
6.5 Combination Ladders
6.5.1 Combination-Ladder Size. When the combination ladder is used as
a self-supporting ladder, the size is designated by the length of the
ladder measured along the front edge of the front side rail from the
bottom of the foot to the top of the top cap, or to the top step when
no top cap is used, with a tolerance of ±1/2 inch, and shall be within
the limits shown in Table 4.
When the combination ladder is used as an extension ladder, the
maximum extended length shall be at least twice the stepladder length
less 3 feet. The stepladder length and the maximum extension-ladder
length shall be within ±1/2 inch of the size indicated on the label.
OK. The ladder I looked at was labeled as 18 ft. 3 in., which no doubt
complies with the Standard. But that does not, in my opinion excuse
calling it, and advertising it as, a 22 ft. ladder. There is no physical
way even, let alone a legal way, in which it can be configured as a
Seems that almost everything but pipe is labled lagrer than what it is.
A few months ago I was looking at pole saws to trim some tree limbs. Some
of them were listed as to the length of the pole ans some were listed as how
far you could reach with the pole. That made some seem about 4 feet longer
than the others with the same or even longer poles.
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