Current through Register 2024 Notice Reg. No. 38, September 20, 2024
(a) "All scaffolds
shall be erected in accordance with the provisions of Article 21 of the
Construction Safety Orders."
(b)
Load Rating.
(1) The design working load of
ladder stands shall be calculated on the basis of one or more 200-pound persons
together with 50 pounds of equipment each.
(2) The design load of all scaffolds shall be
calculated on the basis of:
(A)
Light--Designed and constructed to carry a working load of 25 pounds per square
foot.
(B) Medium--Designed and
constructed to carry a working load of 50 pounds per square foot.
(C) Heavy--Designed and constructed to carry
a working load of 75 pounds per square foot.
(3) All ladder stands and scaffolds shall be
capable of supporting at least 4 times the design working
load.
(c) Materials. The
materials used in mobile ladder stands and scaffolds shall be selected to
safely support the design working load and shall be maintained to protect
against corrosion and deterioration.
(d) Fasteners. Nails, bolts, or other
fasteners used in the construction of ladders, scaffolds, and towers shall be
of adequate size and in sufficient numbers at each connection to develop the
designed strength of the unit. Nails shall be driven full length. (All nails
shall be immediately withdrawn from dismantled lumber.)
(e) Workmanship. All exposed surfaces shall
be free from sharp edges, burrs, or other laceration hazards.
(f) Work Levels.
(1) The maximum work level height shall not
exceed 3 times the least base dimension below the platform. Where the basic
mobile unit does not meet this requirement, outrigger frames shall be employed
to achieve this least base dimension, or provisions shall be made to guy or
brace the unit against tipping.
(2)
The minimum platform width for any work level shall not be less than 20 inches
for mobile scaffolds (towers). Ladder stands shall have a minimum step width of
16 inches.
(3) The supporting
structure for the work level shall be rigidly braced, using cross bracing or
diagonal bracing with rigid platforms at each work level.
(4) The steps of ladder stands shall be
slip-resistant.
(5) The work level
platform of scaffolds (towers) shall be the full width of the scaffold, except
for necessary openings. Work platforms shall be secured in place. All scaffold
platforms shall meet the requirements of the Construction Safety Orders,
Section 1637.
(6) All scaffold work levels 6 feet or higher
above the ground or floor shall have a toeboard at locations where persons are
required to work or pass under the scaffold. (See Section
3210.)
(7) All scaffold work levels 30 inches or
higher above the ground or floor shall have guardrail protection that meets the
requirements of Section
3209 and
3210.
(8) A climbing ladder or stairway shall be
provided for proper access and egress, and shall be affixed or built into the
scaffold and so located that its use will not have a tendency to tip the
scaffold. A landing platform shall be provided at intervals not to exceed 30
feet.
(g) Wheels or
Casters.
(1) Wheels or casters shall be
properly designed for strength and dimensions to support 4 times the design
working load.
(2) All scaffold
wheels, casters and swivels shall be provided with a positive locking device,
or other effective means to prevent movement of the scaffold.
(3) Ladder stands shall have at least 2
locking casters or other means of locking the unit in position. If only 2
casters are used, they shall be of the directional type and if 4 casters are
used, at least 2 of the 4 shall be of the swivel type.
(4) Locking devices shall be kept in the
locked position when workers are climbing or working on scaffolds and ladder
stands.
(5) Where leveling of the
elevated work platform is required, screw jacks or other similar means for
adjusting the height shall be provided in the base section of each mobile unit.
The screw jack shall extend into its leg tube at least 1/3 its length, but in
no case shall the exposed portion of the screw jack exceed 12
inches.
1.
Amendment of subsection (a) filed 11-18-76; effective thirtieth day thereafter
(Register 76, No. 47).
2. Amendment of subsections (a)(3), (e)(1),
(e)(6) and (f) filed 12-19-78; effective thirtieth day thereafter (Register 79,
No. 1).
3. Amendment filed 10-12-84; effective thirtieth day
thereafter (Register 84, No. 41).
4. Amendment of subsection (f)(5)
filed 6-19-2001; operative 7-19-2001 (Register 2001, No. 25).
5.
Amendment of subsection (f)(5) filed 11-2-2010; operative 12-2-2010 (Register
2010, No. 45).
Note: Authority cited: Section
142.3, Labor
Code. Reference: Section
142.3, Labor
Code.
