Document: NUREG-0800
Document ID: 71b0a52a-ac0c-4c26-b0eb-708a6f5600fb
Document Type: srp
Title: FOUNDATIONS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070333.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.8.5
CFR Part: 
CFR Title: 

Content:
REVIEW RESPONSIBILITIES Primary - Structural Engineering Branch (SEB)Civil Engineering and Geosciences Branch (ECGB) 1 Secondary - None I. AREAS OF REVIEW The following areas related to the foundations of all seismic Category I structures are reviewed: 1. Description of the Foundations The descriptive information, including plans and sections of each foundation, is reviewed to establish that sufficient information is provided to define the primary structural aspects and elements relied upon to perform the foundation function. Also reviewed is the relationship between adjacent foundations, including the methods of separation provided where such separation is used to minimize seismic interaction between the buildings. In particular, the type of foundation is identified and its structural characteristics are examined. Among the various types of foundations reviewed are mat foundations and footings, including individual column footings, combined footings supporting more than one column, and wall footings supporting bearing walls. Other types of foundations that may also be used are pile foundations, drilled caissons, caissons for water front structures such as a pumphouse, and rock anchor systems. These types of foundation are reviewed on a case-by-case basis. DRAFT Rev. 2 - April 1996 3.8.5-2 The major plant Category I foundations that are reviewed, together with the descriptive information, are listed below: a. Containment Structure Foundation The most commonly used type of foundation for both concrete and steel containments is a mat foundation, which is a flat thick slab supporting the containment, its interior structures, and a shield building surrounding the containment, if any. For some pressurized-water-reactor (PWR) containments, 2 the base mat has a central depression forming the reactor cavity. The general arrangement of the containment base slab is reviewed as described in subsection I.1 of Standard Review Plan (SRP) Section 3.8.1, with particular emphasis on