N.Y. Comp. Codes R. & Regs. Tit. 12 §§ 23-5.7

Current through Register Vol. 46, No. 50, December 11, 2024

Section 23-5.7 - Outrigger scaffolds

(a)Outrigger beams.

Outrigger beams shall extend not more than six feet beyond the face of the building or other structures. The inboard ends of outrigger beams, measured from the fulcrum points to the extreme inboard points of support, shall be not less than one and one-half times the outboard ends in length. Any wood beams used as outriggers shall rest on their least dimensions. The sides of any such wood beam shall be plumb and the edges shall be horizontal. The fulcrum point of any outrigger beam shall rest on a secure bearing which is at least six inches in each horizontal dimension. Every outrigger beam shall be secured in place against movement in any direction and shall be securely braced at the fulcrum point against tipping.

(b)Inboard supports.

The inboard ends of outrigger beams shall be securely supported either by means of struts bearing against the sills in contact with an overhead structure or by means of anchoring tension members such as U-bolts secured to the structural frame of the building or other structure. The inboard ends of outrigger beams shall be secured against tipping and the entire supporting structures shall be securely braced in both directions to prevent any horizontal movement of such structures.

(c)Design and construction.

(1) Unless outrigger scaffolds are designed by a professional engineer licensed to practice in the State of New York, the minimum sizes of the members of such scaffolds shall be in accordance with Table XI of this Subpart.

(2) Any outrigger scaffold designed by a professional engineer licensed to practice in the State of New York shall be constructed to conform to such design. A copy of the detailed drawings and specifications showing the sizes and spacing of the members of such scaffold shall be kept at the job site available for examination by the commissioner.

(d)Planking.

The planking of every outrigger scaffold platform shall be laid tight and shall extend to within three inches of the wall of the building or other structure. Such planking shall be nailed or bolted to the outriggers.

(e)Screening.

Where there is a danger of material or objects falling from any outrigger scaffold, such scaffold shall be provided with wire mesh screening in compliance with this Part (rule) installed between the guard rail and the toeboard.

TABLE XI

MINIMUM SPECIFICATIONS FOR OUTRIGGER SCAFFOLDS

Light duty	Medium duty
scaffolds	scaffolds
Maximum Load.........................	25 lbs. per sq. ft.	50 lbs. per sq. ft.
Outrigger Size-.........................
Lumber.....................................	2" * 10"	3" * 10"
Steel..........................................	7" I-beam	7" I-beam
Aluminum..................................	10 I 8.7	10 I 8.7
Maximum Outrigger Spacing-...................................
Lumber.....................................	10' - 0"	6' * 0"
Steel-7" I-beam......................................	10' - 0"	8' * 0"
Aluminum-10 I 8.7.............................................	10' * 0"	8' * 0"
Planking....................................	2" * 9"	2" * 9"
Guard Rail.................................	2" * 4"	2" * 4"
Guard Rail Uprights....................................	2" * 4"	2" * 4"
Toeboards................................	2" * 6"	2" * 9"

(f)Superstructures.

All supports for superstructures installed on outrigger scaffolds shall be placed directly over the outrigger beams and shall be nailed or otherwise secured in place. Such superstructures shall not exceed six feet in height above the outrigger beam supports and shall otherwise conform with this Part (rule). In no case shall horses be used as supports for such superstructures.

N.Y. Comp. Codes R. & Regs. Tit. 12 §§ 23-5.7