A55 -- Seismic and Wind-Resistant Design (SI)

This chapter covers the design of restraints to limit equipment movement and to keep the equipment captive during an earthquake or extreme wind loading. Seismic restraints and isolators do not reduce the forces transmitted to the restrained equipment. Instead, properly designed and installed seismic restraints and isolators have the necessary strength to withstand the imposed forces. However, equipment that is to be restrained must also have the necessary strength to remain attached to the restraint.

Chapter Table of Contents

SEISMIC-RESISTANT DESIGN

Terminology

Calculations

Applying Static Analysis

Computation of Loads at Building Connection

ANSI Steel Bolts

Lag Screws into Timber

Concrete Post-Installed Anchor Bolts

Weld Capacities

Seismic Snubbers

Seismic Restraints

Restraint of Pipe and Duct Risers

Examples

Installation Problems

WIND-RESISTANT DESIGN

Terminology

Calculations

Wall-Mounted HVACR Component Calculations (Louvers)

Certification of HVACR Components for Wind

Citation: 2011 ASHRAE Handbook -- HVAC Applications: Chapter 55, Seismic and Wind-Restraint Design



Product Code(s): D-A552011SI