34 Pa. Code § 21.36 - Extension ladders
(a) Side rails
of extension ladders when fully extended shall conform with the dimensions of
§
21.32 (relating to side rails) for
such extended length. On a two piece extension ladders it is recommended that
allowance be made for a 3 foot lap up to approximately 38 feet, a 4 foot lap
for 40 and 44 feet extended lengths, a 5 foot lap for 46 feet and up, and for
three section ladders 4 feet at each lap for 46 feet and up of extended length.
Rungs shall be according to the requirements of §
21.33 (relating to
steps).
(b) The minimum distance
between side rails of bottom section of extension ladders shall be as follows:
| Full working length ladder (feet) | Minimum distance (between side rails) (inches) |
| Up to and including 23 | 14 1/2 |
| Over 23, up to and including 36 | 16 |
| Over 36, up to and including 55 | 18 |
(c)
Each ladder shall be equipped with two automatic locks of an approved
type.
(d) Locks and guide irons
shall be of such construction as to make the extension ladder equal in strength
to a ladder constructed of continuous side rails.
(e) Locking devices other than as specified
in this section may be used after they are approved for such service.
(f) Ladders over 30 feet in length shall be
equipped with metal shackle, pulley, and rope for operation. It is recommended
that ladders less than 30 feet in length be also so equipped.
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