2006 New York Code - Multiple-point Suspension Scaffolds.

 
    § 27-1047 Multiple-point suspension scaffolds. (a) General.
    (1) All multiple-point suspension scaffolds shall be supported by wire
  ropes. The use of fibre ropes is not permitted.
    (2)  Provision shall be made to prevent supports from slipping off the
  ends of outrigger beams.
    (3) Outrigger beams and platform bearers shall be of metal.
    (b) Outrigger beams.
    (1) The overhang of outrigger beams shall not exceed that specified by
  the design, and the inboard length of beam shall be  at  least  one  and
  one-half times the outboard length.
    (2) Outrigger beams shall be anchored and braced at both fulcrum point
  and  inboard  end  to  resist  all  vertical,  horizontal, and torsional
  forces.
    (3) Supporting points for outrigger beams shall be level, smooth,  and
  of sufficient area (at least six inches by six inches) to provide a firm
  seat.
    (4)  The  wire  rope  suspenders  shall  be  securely  fastened to the
  outrigger beams by steel shackles or equivalent means. The shackles  and
  outrigger beams shall be so located that the ropes will hang vertically.
    (5) Outrigger beams shall be of the sizes required for the design, but
  shall  be  at  least  equivalent  in strength to a standard 7115.3 steel
  I-beam, and shall be spaced not more than ten feet center-to-center.
    (c) Hoisting machines.
    (1) Suspended scaffolds shall be provided with  an  approved  hoisting
  machine of either the platform or overhead type.
    (2)  At  least  four  turns  of  rope shall at all times remain on the
  hoisting drum, and the end of the rope shall be properly secured to  the
  drum.
    (3)  The  hoisting  rope shall be inspected regularly, maintained, and
  lubricated.
    (d) Platform.
    (1) Platform widths shall be limited to eight feet.
    (2) Platform planking shall be laid tight and securely fastened to the
  bearers, shall overlap  the  supporting  bearers  at  each  end  of  the
  scaffold  at  least  six  inches  but not more than eighteen inches, and
  shall not be supported across more than two bearers.
    (3) Platform bearers shall be at least the equivalent of a pair of two
  and one-half inch by two and one-half inch by one-quarter inch  standard
  angles.
    (e) Guard rail and toeboard. The outside edge of the platform and open
  ends  shall be provided with a standard guard rail and toeboard (section
  27-1050 of this article) except that spacing of  the  vertical  supports
  may  be  increased  to  not  more  than ten feet. Where there is a space
  between the scaffold and the  structure  in  excess  of  six  inches,  a
  similar guard rail shall be provided at the inside edge of the platform.
    (f) Erection and removal.
    (1) Multiple-point suspension scaffolds shall be installed, relocated,
  and   raised   or   lowered   under  the  supervision  of  a  designated
  superintendent or foreman who shall enforce  such  measures  as  may  be
  required for the safe execution of such operations.
    (2)  During raising or lowering, the levels of the various sections of
  the scaffolds shall be kept uniform and the differential height  between
  sections minimized.