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USACE / NAVFAC / AFCEC / NASA UFGS-23 05 48.19 (May 2018)
Change 2 - 08/20
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Preparing Activity: USACE Superseding
UFGS-13 48 00.0
0 10 (October 2007)
UNIFIED FACILITIES GUIDE SPECIFICATIONS
References are in agreement with UMRL dated October 2022
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SECTION TABLE OF CONTENTS
DIVISION 23 - HEATING, VENTILATING, AND AIR CONDITIONING (HVAC)
SECTION 23 05 48.19
[SEISMIC] BRACING FOR HVAC
05/18, CHG 2: 08/20
PART 1 GENERAL
1.1 REFERENCES
1.2 SYSTEM DESCRIPTION
1.2.1 General Requirements
1.2.2 Mechanical Equipment
1.2.3 Mechanical Systems
1.2.4 Contractor Designed Bracing
1.2.5 Items Not Covered By This Section
1.2.5.1 Fire Protection Systems
1.2.5.2 Items Requiring No Seismic Restraints
1.3 SUBMITTALS
PART 2 PRODUCTS
2.1 GENERAL DESIGN REQUIREMENTS
2.2 EQUIPMENT RESTRAINT
2.2.1 Rigidly (Base and Suspended) Mounted Equipment
2.2.2 Nonrigid or Flexibly-Mounted Equipment
2.3 BOLTS AND NUTS
2.4 FLEXIBLE JOINTS
2.4.1 Braided Hose Expansion Joint
2.4.1.1 Corrugated Hose
2.4.1.2 Flexible Hose Expansion Loops
2.4.2 Double Ball Flexible Expansion Joint
2.4.2.1 Internal Surfaces
2.4.2.2 Exterior Surfaces
2.4.3 Double Ball Flexible Expansion Joint Gravity Drain
(Non-Pressurized)
2.5 SWAY BRACING MATERIALS
2.6 MULTIDIRECTIONAL SEISMIC SNUBBERS
PART 3 EXECUTION
SECTION 23 05 48.19 Page 1
