SECTION 406 MOTOR-VEHICLE-RELATED OCCUPANCIES

 

406.6 Repair garages.

406.6.1 General. Repair garages shall be constructed in accordance with the International Fire Code and this sec­tion. This occupancy shall not include motor fuel-dispensing facilities, as regulated in Section 406.5.

406.6.2 Mixed uses. Mixed uses shall be allowed in the same building as a repair garage subject to the provisions of Section 508.3.

 

406.6.3 Ventilation. Repair garages shall be mechanically ventilated in accordance with the International Mechanical Code. The ventilation system shall be controlled at the entrance to the garage.

 

406.6.4 Floor surface. Repair garage floors shall be of con­crete or similar noncombustible and nonabsorbent materials.

 

Exception: Slip-resistant, nonabsorbent, interior floor finishes having a critical radiant flux not more than 0.45 W/cm2, as determined by NFPA253, shall be permitted.

406.6.5 Heating equipment. Heating equipment shall be installed in accordance with the International Mechanical Code.

 

[F] 406.6.6 Gas detection system. Repair garages used for repair of vehicles fueled by non odorized gases, such as hydrogen and non odorized LNG, shall be provided with an approved flammable gas-detection system.

 

[F] 406.6.6.1 System design. The flammable gas-detection system shall be calibrated to the types of fuels or gases used by vehicles to be repaired. The gas detection system shall be designed to activate when the level of flammable gas exceeds 25 percent of the lower explosive limit. Gas detection shall also be provided in lubrication or chassis repair pits of garages used for repairing non odorized LNG-fueled vehicles.

 

[F] 406.6.6.2 Operation. Activation of the gas detection system shall result in all of the following:

1. Initiation of distinct audible and visual alarm signals in the repair garage.

 

2. Deactivation of all heating systems located in the repair garage.

 

3. Activation of the mechanical ventilation system,  where the system is interlocked with gas detection.

 

[F] 406.6.6.3 Failure of the gas detection system. Failure of the gas detection system shall result in the deactivation of the heating system, activation of the mechanical ventilation system when the system is interlocked with the gas detection system and cause a trouble signal to sound in an approved location.

All Rights Reserved. This 2006 International Building Code® is a copyrighted work owned by the International Code Council, Inc. Without advance written permission from the copyright owner, no part of this book may be reproduced, distributed, or transmitted in any form or by any means, including, without limitation, electronic, optical or mechanical means (by way of example and not limitation, photocopying, or recording by or in an information storage retrieval system). For information on permission to copy material exceeding fair use, please contact: Publications, 4051West Flossmoor Road, Country Club Hills, IL 60478-5795. Phone 1-888-ICC-SAFE (422-7233). Trademarks: “International Code Council,” the “International Code Council” logo and the “International Building Code” are trademarks of the International Code Council, Inc.