Building Code Title 27 Subchapter 9 - New York City

1 Title 27 / Subchapter 9. Subchapter 9. LOADS LIST OF TABLES. TABLE OF CONTENTS Table No. 9-1 Percentage of Live Load [Sub-Art. Art. or Sec.]* or Sec.** ARTICLE 1 GENERAL. [ ] Art. 1 General [ ] 27-550 Scope. - [ ] 550 Scope Buildings and parts thereof, shall be capable of resisting [ ] 551 Standards all levels** actually imposed thereon without exceeding [ ] 552 Definitions the allowable stresses prescribed in subchapters ten and [ ] Art. 2 Dead Loads eleven of this chapter. In no cases shall the assumed loads be less than the minimum values described [ ] 553 Construction Materials and herein. In addition, within special flood hazard areas, Assembled Elements of and below the regulatory flood datum, as described in Construction article ten of Subchapter four of this chapter, applicable [ ] 554 Service Equipment load requirements of reference standard RS 4-5 shall be applied.

2 [ ] 555 Partition Loads ** As enacted but loads probably intended. [ ] Art. 3 Live Loads [ ] 556 General [ ] 27-551 Standards. - [ ] 557 Floor Live Loads The provisions of reference standard RS-9 shall be a [ ] 558 Live Loads for Sidewalks, part of this Subchapter . Driveways, and Railings [ ] 559 Columns in Parking Areas [ ] 27-552 Definitions. - For definitions to be used in the interpretation of this [ ] 560 Stage Areas Using Scenery Subchapter , see Subchapter two of this chapter. or Scenic Elements [ ] 561 Roof Loads ARTICLE 2 DEAD LOADS. [ ] 562 Moving Loads [ ] 563 Partial Loading Conditions [ ] 27-553 Construction materials and assembled [ ] 564 Floor Loads to be Posted elements of construction.

3 - Except as provided in [ ] Art. 4 Live Load Reduction section 27-555 of this article, the dead load shall be the [ ] 565 Roof Loads actual weight of the Building materials or construction [ ] 566 Floor Live Loads assemblies to be supported, computed from the unit [ ] 567 Contributory Floor Areas weights given in reference standard RS 9-1. Where unit [ ] 568 Foundations and Column weights are not established in reference standard RS 9-1, the actual weights may be determined by analysis or Supports from data in manufacturers' drawings or catalogs. Unit [ ] Art. 5 Wind Loads and Earthquake Loads weights less than those given in reference standard RS.

4 [ ] 569 Wind Loads and Earthquake 9-1 may be used only with approval of the commissioner. Loads [ ] Art. 6 Other Loads [ ] 27-554 Service equipment. - Provision [ ] 570 Earth Pressures and shall be made for the weights of all Building service Foundation Loads equipment including plumbing stacks, piping, heating and [ ] 571 Bins and Bunkers air conditioning equipment, electrical equipment, elevators, [ ] 572 Prestressing Forces elevator machinery, flues, and similar fixed equipment. The [ ] 573 Construction Loads weights of such equipment (or the allowances therefor) shall [ ] 574 Fluid Pressures be included in the dead load.

5 The weight of equipment that is part of the occupancy of a given area shall be considered [ ] 575 Ice as live load. See also paragraph two of subdivision (b) and [ ] 576 Thermal Forces subdivision (d) of section 27-557 of article three of this Subchapter . [ ] 577 Shrinkage [ ] Art. 7 Distribution of Loads [ ] 27-555 Partition loads. - Weights of all [ ] 578 Distribution of Vertical Loads partitions shall be considered, using either actual weights [ ] 579 Distribution of Horizontal Loads at locations shown on the plans or the equivalent uniform *"C26" omitted from section numbers in this column. load given in subdivision (b) of this section.

6 ** (a) Actual loads. - Where actual partition weights are "27" omitted from section numbers in this column. 219. Title 27 / Subchapter 9. used, the uniform design live load may be omitted from square feet having no side less than eight feet. the strip of floor area under each partition. (b) Equivalent uniform load. - The equivalent uniform [ ] 27-558 Live loads for sidewalks, partition loads in reference standard RS 9-1 may be used driveways, and railings. - in lieu of actual partition weights except for bearing (a) Sidewalks and driveways. - partitions or partitions in toilet room areas (other than in (1) When supported on grade, all sidewalks for new one- and two-family dwellings), at stairs and elevators, buildings and alterations shall be subject to inspection and and similar areas where partitions are concentrated.

7 In acceptance by the commissioner. Portions of such such cases, actual partition weights shall be used in design. sidewalks that are located between the curb line and Except as otherwise exempted, equivalent uniform loads the street line shall be constructed in compliance with shall be used in areas where partitions are not definitely the specifications for concrete sidewalks of the department located on the plans, or in areas where partitions are of transportation. subject to rearrangement or location.* (2) All sidewalks and driveways or portions thereof *As enacted but "relocation" probably intended. that are structurally supported shall be designed for a live load of one hundred psf uniformly distributed and in ARTICLE 3 LIVE LOADS accordance with the provisions of Subchapter ten of this chapter.

8 Where subject to intentionally or accidentally [ ] 27-556 General. - imposed wheel loads of vehicles, such portions of In addition to the applicable dead, wind, and other sidewalks and driveways shall be designed for a uniformly loads, the Building shall be designed for uniform live distributed load of six hundred psf or for the maximum loads, for concentrated live loads, or for concurrent vehicular wheel load that could be imposed thereon, combinations of uniform and concentrated live loads, whichever develops the greater stresses. whichever produce the greatest stress. (3) Appurtenant components of sidewalks and driveways, including manholes, manhole covers, vault [ ] 27-557 Floor live loads.

9 - covers, gratings, etc., shall be designed for the loads (a) Uniformly distributed live loads. - The minimum prescribed in paragraph two of this subdivision, or shall design values established in reference standard RS 9-2 conform to the standards of the city agency having for various occupancies or uses shall be used subject to jurisdiction. the provisions of subdivision (d) of this section. Where (b) Railings and parapets. - the occupancy or use of a space does not conform to (1) Railings and parapets around stairwells, balconies, any of those listed, the design load shall be determined areaways, and roofs, and other railings in similar locations by the architect or engineer subject to approval by the other than those for places of assembly, shall be designed commissioner.

10 To resist the simultaneous application of a lateral force of (b) Concentrated live loads. - forty plf and a vertical load of fifty plf, both applied to the (1) The Building framing shall be capable of supporting top of the railing. For railings and parapets at the front of the concentrated live loads established in reference standard theater balconies and in similar locations in places of RS 9-2, placed so as to produce maximum stress. assembly, the lateral force shall be increased to fifty plf (2) Floors that support any items of machinery, and the vertical load to one hundred plf. An exception is electrical or mechanical equipment, or other concentrated live made for railings in one- and two-family dwellings, which load in excess of one thousand pounds (including the weights shall be designed for a lateral force of twenty plf plus a of pads or bases) shall be designed to support such weight as vertical load of twenty plf, both applied at the top of the a concentrated load or group of concentrated loads.