Current through Register Vol. 54, No. 44, November 2, 2024
(a)
Reference to other requirements. The requirements of §
6.12(a)(1) and (2),(b),(f),(h),(i),(k) and
(l) (relating to single pole scaffolds) apply
to independent pole scaffolds.
(b)
Light-duty scaffolds. Light-duty scaffolds shall conform to
the following standards:
(1)
Light-duty scaffolds not more than 24 feet in height. For
light-duty scaffolds not more than 24 feet in height, the following minimum
nominal size material and spacing of members shall be used:
(i) Poles or uprights-2 inches by 4
inches.
(ii) Ledgers supporting
bearers-2 inches by 6 inches.
(iii)
Stringers not supporting bearers-1 inch by 6 inches.
(iv) Bearers-2 inches by 8 inches.
(v) Braces-1 inch by 4 inches.
(vi) Planking-2 inches by 10
inches.
(vii) Spacing of poles,
measured along platform (maximum)-7 feet, 6 inches.
(viii) Spacing of poles distance from
building (minimum)-6 feet, 6 inches.
(ix) Spacing of ledgers vertically-7
feet.
(2)
Light-duty scaffolds more than 24 feet in height. For
scaffolds more than 24 feet in height and not more than 40 feet in height, the
poles shall be 4 inches by 4 inches in cross section and for scaffolds more
than 40 feet in height 7 feet by 6 inches in cross section or heavier as
required. Other members shall conform to the requirements of subsection (a),
with the exception that poles shall be spaced 7 feet, 6 inches minimum distance
from building.
(c)
Heavy-duty scaffolds. Heavy-duty scaffolds shall conform the
following standards:
(1)
Heavy-duty
scaffolds not more than 24 feet in height. For heavy-duty scaffolds,
not more than 24 feet in height, the following minimum nominal size material
and spacing of members shall be used:
(i)
Poles or uprights-3 inches by 4 inches.
(ii) Ledgers supporting bearers-2 inches by 8
inches.
(iii) Stringers not
supporting bearers-1 inch by 6 inches.
(iv) Bearers-2 inches by 10 inches.
(v) Braces-1 inch by 6 inches.
(vi) Planking-2 inches by 10
inches.
(vii) Spacing of poles,
measured along platform (maximum)-7 feet.
(viii) Spacing of poles distance from
building (minimum)-6 feet, 6 inches.
(ix) Spacing of ledgers vertically-4 feet, 6
inches.
(2)
Heavy-duty scaffolds more than 24 feet in height. For
heavy-duty scaffolds more than 24 feet in height and not more than 40 feet in
height, the following minimum nominal sizes and spacing of members shall be
used:
(i) Poles or uprights-4 inches by 4
inches.
(ii) Ledgers supporting
bearers-2 inches by 8 inches.
(iii)
Stringers not supporting bearers-2 inches by 8 inches.
(iv) Bearers (two)-2 inches by 12
inches.
(v) Braces-1 inch by 6
inches.
(vi) Planking-2 inches by
10 inches.
(vii) Spacing of poles,
measured along platform (maximum)-7 feet.
(viii) Spacing of poles distance from
building (minimum)-10 feet.
(ix)
Spacing of ledgers vertically-4 feet, 6 inches.
(d)
Scaffolds greater than 40 feet in
height. When built-up scaffolds are erected more than 40 feet high,
the size of members shall be increased so that a factor of safety of four shall
be maintained in the scaffold as a whole and in all its component
parts.
(e)
Placement of
poles. The inner row of poles shall be set as near the wall of the
building as practical and allow workmen sufficient working space. Each set of
poles, outside and inside, shall be provided with its own ledgers.
(f)
Footing of poles.
Particular care shall be taken that the bearing or footing of independent pole
scaffolds is solid and firmly secure.
(g)
Bracing. Adequate
diagonal bracing shall be provided and such cross braces shall be nailed to
every pole crossed. Cross bracing between front and rear poles shall be
provided and the free ends of scaffolds shall be double cross braced.
(h)
Bearers. Bearers shall
be laid on ledgers sidewise, one at each pair of poles (inside and outside) and
shall be securely nailed to the poles. They shall be long enough to rest upon
both inner and outer ledges and overlap each ledger by at least three
inches.
(i)
Horses.
Where the use of horses is necessary they shall conform to the
requirements set forth in §
6.24 (relating to horse
scaffolds).
(j)
Protection. Protection shall be afforded as set forth in
§
6.32 (relating to
protection).
This section cited in 34 Pa. Code §
6.25 (relating to plasterers' and
decorators' inside scaffolds).
