Performance Categories 1, 2, 3, and 4

DOE-STD-1020-2002

To achieve well-designed and well-constructed earthquake-resistant SSC's or to assess

existing SSC's, it is necessary to:

Understand the seismic response of the SSC.

Select and provide an appropriate structural system.

Provide seismic design detailing that obtains ductile response and avoids premature

failures due to instability or low ductility response.

Provide material testing and construction inspection which assures

construction/fabrication as intended by the designer.

All DOE structures, systems, and components must be designed or evaluated utilizing an

earthquake engineering quality assurance plan as required by DOE Order 5700.6C (Ref. C-65)

and similar to that recommended by Recommended Lateral Force Requirements and

Commentary, Seismology Committee, Structural Engineers Association of California (Ref.

C-66). The level of rigor in such a plan should be consistent with the performance category and

a graded approach. In general, the earthquake engineering quality assurance plan should

include:

Performance Categories 1, 2, 3, and 4

A statement by the engineer of record on the earthquake design basis including: (1)

description of the lateral force resisting system, and (2) definition of the earthquake

loading used for the design or evaluation. For new designs, this statement should be on

the design drawings; for evaluations of existing facilities, it should be at the beginning

of the seismic evaluation calculations.

Seismic design or evaluation calculations should be checked for numerical accuracy and

for theory and assumptions. The calculations should be signed by the responsible

engineer who performed the calculations, the engineer who checked numerical accuracy,

and the engineer who checked theory and assumptions. If the calculations include work

performed on a computer, the responsible engineer should sign the first page of the

output, describe the model used, and identify those values input or calculated by the

computer. The accuracy of the computer program and the analysis results must be

verified.

For new construction, the engineer of record should specify a material testing and

construction inspection program. In addition, the engineer should review all testing and

inspection reports and make site visits periodically to observe compliance with plans

and specifications. For certain circumstances, such as the placement of rebar and

concrete for special ductile frame construction, the engineer of record should arrange to

provide a specially qualified inspector to continuously inspect the construction and to

certify compliance with the design.

C-52