Restraining Duct & Pipes

A key factor in effective piping and ductwork restraint is site planning and coordination prior to installation. A first step is choosing between cable or ridged brace restraints. Selecting the proper restraint system requires a study of piping or ductwork placement and an examination of site conditions, including wall and ceiling location and construction.

Component	Design Considerations
Roof Top	If contents are hazardous, restraint locations and quantity will be affected
	A determining factor for restraint locations will be whether the pipe is constructed from ductile or non-ductile materials,
	Anchors must be approved for seismic restraint
Indoor piping and ductwork	The restraint system needs to be attached to the building structure
	Confirm that restraint anchor location (wall, beam, column, or slab) can withstand seismic load
Piping & ductwork risers	Should be restrained to shaft walls or floor slabs with structural members and anchors
Rooftop piping and ductwork	Transverse and longitudinal restraints need to be attached positively to the structure
	Restraint supports need to be connected properly to the roof system