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// CODE SNIPPET

3314.9.1 Height-To-Base Ratio

NYC Building Code 2014 > 33 Safeguards During Construction or Demolition > 3314 Scaffolds > 3314.9 Supported Scaffold > 3314.9.1 Height-To-Base Ratio
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A supported scaffold with a height-to-base ratio (including outriggers supports, if used) of more than four to one (4:1) shall be restrained from tipping by guying, tying, bracing or equivalent means as follows:
  1. Guys, ties or braces shall be installed at locations where horizontal members support both inner and outer legs.
  2. Guys, ties, or braces shall be installed according to the manufacturer's recommendations, or as designed in accordance with Section 3314.3, or at a minimum, the first guy, tie or brace shall be installed at a horizontal member and not more than a distance 4 times the least plan dimension from the base support and be repeated vertically at locations of horizontal members every 20 feet (6096 mm) or less thereafter for scaffolds 3 feet (914 mm) wide or less and every 26 feet (7925 mm) or less thereafter for scaffolds greater than 3 feet (914 mm) wide. The top guy, tie, or brace shall be placed no further than four times the least plan dimension from the top. Such guys, ties, or braces shall be installed at each end of the scaffold and at horizontal intervals not to exceed 30 feet (9144 mm) measured from one end (not both) towards each other.
  3. Guys, ties, braces, or outriggers shall be used to prevent tipping of supported scaffolds in all circumstances where an eccentric load, such as a cantilevered work platform, is applied or is transmitted to the scaffold.

Related Code Sections


3314.9.1 Safeguards During Construction or Demolition, Height-To-Base Ratio
A supported scaffold with a height-to-base ratio (including outriggers supports, if used) of more than four to one (4:1) shall be restrained from ...
NYC Building Code 2008 > 33 Safeguards During Construction or Demolition > 3314 Scaffolds > 3314.9 Supported Scaffold > 3314.9.1 Height-To-Base Ratio
3314.9.1 Safeguards During Construction or Demolition, Height-To-Base Ratio
A supported scaffold with a height-to-base ratio (including outriggers supports, if used) of more than four to one (4:1) shall be restrained from ...
NYC Building Code 2014 > 33 Safeguards During Construction or Demolition > 3314 Scaffolds > 3314.9 Supported Scaffold > 3314.9.1 Height-To-Base Ratio
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NYC Building Code 2008 > 7 Fire-Resistance-Rated Construction > 721 Calculated Fire Resistance > 721.5 Steel Assemblies > 721.5.1 Structural Steel Columns > 721.5.1.1 General > 721.5.1.1.3 Weight-To-Perimeter Ratio
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