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// CODE SNIPPET

[F] 415.10.1 Fabrication Areas

2014 FBC - Building, 5th edition > 4 Special Detailed Requirements Based on Use and Occupancy > 415 Groups H-1, H-2, H-3, H-4 and H-5 > 415.10 Group H-5 > 415.10.1 Fabrication Areas
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Fabrication areas shall comply with Sections 415.10.1.1 through 415.10.1.8.

[F] 415.10.1.1 Hazardous Materials

Hazardous materials and hazardous production materials (HPM) shall comply with Sections 415.10.1.1.1 and 415.10.1.1.2.

[F] 415.10.1.1.1 Aggregate Quantities

The aggregate quantities of hazardous materials stored and used in a single fabrication area shall not exceed the quantities set forth in Table 415.10.1.1.1.

Exception: The quantity limitations for any hazard category in Table 415.10.1.1.1 shall not apply where the fabrication area contains quantities of hazardous materials not exceeding the maximum allowable quantities per control area established by Tables 307.1(1) and 307.1(2).

[F] TABLE 415.10.1.1.1
QUANTITY LIMITS FOR HAZARDOUS MATERIALS IN A SINGLE FABRICATION AREA IN GROUP H-5a

HAZARD CATEGORYSOLIDS
(pounds per square foot)
LIQUIDS
(gallons per square foot)
GAS
(cubic feet @ NTP/square foot)
PHYSICAL-HAZARD MATERIALS
Combustible dustNote bNot ApplicableNot Applicable
Combustible fiberLooseNote bNot ApplicableNot Applicable
BaledNotes b, c
Combustible liquidIINot Applicable0.01Not Applicable
IIIA0.02
IIIBNot Limited
Combination ClassI, II and IIIA0.04
Cryogenic gasFlammableNot ApplicableNot ApplicableNote d
Oxidizing1.25
ExplosivesNote bNote bNote b
Flammable gasGaseousNot ApplicableNot ApplicableNote d
LiquefiedNote d
Flammable liquidIANot Applicable0.0025Not Applicable
IB0.025
IC0.025
Combination ClassIA, IB and IC0.025
Combination ClassI, II and IIIA0.04
Flammable solid0.001Not ApplicableNot Applicable
Organic peroxideUnclassified
detonable
Note bNot ApplicableNot Applicable
Class INote b
Class II0.025
Class III0.1
Class IVNot Limited
Class VNot Limited
Oxidizing gasGaseousNot ApplicableNot Applicable1.25
Liquefied1.25
Combination of gaseous and liquefied1.25
OxidizerClass 4Note bNote bNot Applicable
Class 30.0030.03
Class 20.0030.03
Class 10.0030.03
Combination Class1, 2, 30.0030.03
Pyrophoric materials0.010.00125Notes d and e
Unstable (reactive)Class 4Note bNote bNote b
Class 30.0250.0025Note b
Class 20.10.01Note b
Class 1Not LimitedNot LimitedNot Limited
Water reactiveClass 3Note b0.00125Not Applicable
Class 20.250.025
Class 1Not LimitedNot Limited
HEALTH-HAZARD MATERIALS
CorrosivesNot LimitedNot LimitedNot Limited
Highly toxicNot LimitedNot LimitedNote d
ToxicsNot LimitedNot LimitedNote d
For SI: 1 pound per square foot = 4.882 kg/m2, 1 gallon per square foot = 40.7 L/m2, 1 cubic foot @ NTP/square foot = 0.305 m3 @ NTP/m2, 1 cubic foot = 0.02832 m3.
a. Hazardous materials within piping shall not be included in the calculated quantities.
b. Quantity of hazardous materials in a single fabrication shall not exceed the maximum allowable quantities per control area in Tables 307.1(1) and 307.1(2).
c. Densely packed baled cotton that complies with the packing requirements of ISO 8115 shall not be included in this material class.
d. The aggregate quantity of flammable, pyrophoric, toxic and highly toxic gases shall not exceed 9,000 cubic feet at NTP.
e. The aggregate quantity of pyrophoric gases in the building shall not exceed the amounts set forth in Table 415.5.2.

[F] 415.10.1.1.2 Hazardous Production Materials

The maximum quantities of hazardous production materials (HPM) stored in a single fabrication area shall not exceed the maximum allowable quantities per control area established by Tables 307.1(1) and 307.1(2).

[F] 415.10.1.2 Separation

Fabrication areas, whose sizes are limited by the quantity of hazardous materials allowed by Table 415.10.1.1.1, shall be separated from each other, from corridors and from other parts of the building by not less than 1-hour fire barriers constructed in accordance with Section 707 or horizontal assemblies constructed in accordance with Section 711, or both.

Exceptions:
  1. Doors within such fire barrier walls, including doors to corridors, shall be only self-closing fire door assemblies having a fire protection rating of not less than 3/4 hour.
  2. Windows between fabrication areas and corridors are permitted to be fixed glazing listed and labeled for a fire protection rating of not less than 3/4 hour in accordance with Section 716.

[F] 415.10.1.3 Location of Occupied Levels

Occupied levels of fabrication areas shall be located at or above the first story above grade plane.

[F] 415.10.1.4 Floors

Except for surfacing, floors within fabrication areas shall be of noncombustible construction.

Openings through floors of fabrication areas are permitted to be unprotected where the interconnected levels are used solely for mechanical equipment directly related to such fabrication areas (see also Section 415.10.1.5).
Floors forming a part of an occupancy separation shall be liquid tight.

[F] 415.10.1.5 Shafts and Openings Through Floors

Elevator hoistways, vent shafts and other openings through floors shall be enclosed where required by Sections 712 and 713. Mechanical, duct and piping penetrations within a fabrication area shall not extend through more than two floors. The annular space around penetrations for cables, cable trays, tubing, piping, conduit or ducts shall be sealed at the floor level to restrict the movement of air. The fabrication area, including the areas through which the ductwork and piping extend, shall be considered a single conditioned environment.

[F] 415.10.1.6 Ventilation

Mechanical exhaust ventilation at the rate of not less than 1 cubic foot per minute per square foot [0.0051 m3/(s • m2)] of floor area shall be provided throughout the portions of the fabrication area where HPM are used or stored. The exhaust air duct system of one fabrication area shall not connect to another duct system outside that fabrication area within the building.

A ventilation system shall be provided to capture and exhaust gases, fumes and vapors at workstations.
Two or more operations at a workstation shall not be connected to the same exhaust system where either one or the combination of the substances removed could constitute a fire, explosion or hazardous chemical reaction within the exhaust duct system.
Exhaust ducts penetrating fire barriers constructed in accordance with Section 707 or horizontal assemblies constructed in accordance with Section 711 shall be contained in a shaft of equivalent fire-resistance-rated construction. Exhaust ducts shall not penetrate fire walls.
Fire dampers shall not be installed in exhaust ducts.

[F] 415.10.1.7 Transporting Hazardous Production Materials to Fabrication Areas

HPM shall be transported to fabrication areas through enclosed piping or tubing systems that comply with Section 415.10.6, through service corridors complying with Section 415.10.3, or in corridors as permitted in the exception to Section 415.10.2. The handling or transporting of HPM within service corridors shall comply with the Florida Fire Prevention Code.

[F] 415.10.1.8 Electrical

Electrical equipment and devices within the fabrication area shall comply with NFPA 70. The requirements for hazardous locations need not be applied where the average air change is at least four times that set forth in Section 415.10.1.6 and where the number of air changes at any location is not less than three times that required by Section 415.10.1.6. The use of recirculated air shall be permitted.

[F] 415.10.1.8.1 Workstations

Workstations shall not be energized without adequate exhaust ventilation. See Section 415.10.1.6 for workstation exhaust ventilation requirements.

Related Code Sections


415.10.1 Special Detailed Requirements Based on Use and Occupancy, Fabrication Areas
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2014 FBC - Building, 5th edition > 4 Special Detailed Requirements Based on Use and Occupancy > 415 Groups H-1, H-2, H-3, H-4 and H-5 > 415.10 Group H-5 > 415.10.1 Fabrication Areas
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2020 FBC - Building, 7th edition > 4 Special Detailed Requirements Based on Occupancy and Use > 415 Groups H-1, H-2, H-3, H-4 and H-5 > 415.11 Group H-5 > 415.11.1 Fabrication Areas
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415.10.1.4 Special Detailed Requirements Based on Use and Occupancy, Floors
Except for surfacing, floors within fabrication areas shall be of noncombustible construction. Openings through floors of fabrication areas ...
2014 FBC - Building, 5th edition > 4 Special Detailed Requirements Based on Use and Occupancy > 415 Groups H-1, H-2, H-3, H-4 and H-5 > 415.10 Group H-5 > 415.10.1 Fabrication Areas > 415.10.1.4 Floors
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