HPAC Magazine

Viega Fittings Meet Seismic Standards

By Logan Caswell   

HPAC General Human Resources fittings Seismic Standards Viega

The fitting assemblies withstood acceleration factors up to SDs 2.0 for at least 30 seconds.

Viega has announced that its fittings recently underwent testing to meet rigid standards for seismic durability.

The fittings were tested at 200 psi with compressed gas and at 300 psi with water in the Structural Engineering and Earthquake Simulation Laboratory (SEESL) at the University of Buffalo in December 2021.

The fitting assemblies withstood acceleration factors up to Sds 2.0 for at least 30 seconds. Sds is an acronym for spectral response acceleration at short period, a measurement used to determine the seismic compliance of equipment. The U.S. Geological Survey considers a 2.0 certification to be the highest level required in the most seismically active areas of North America.

The lab tested two different fitting assemblies, which moved the assemblies through six degrees of freedom.

The fittings were tested in conjunction with:

  • International Code Council Evaluation Service (ICC-ES) AC156
  • International Building Code
  • California Department of Health Care Access and Information (HCAI)




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