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:
ion 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 methods of transferring horizontal shears, such as those caused by earthquakes, to the foundation media. Where shear keys are used for such purposes, the general arrangement of the keys is reviewed. Where waterproofing membranes are used, their effect on the shear resistance of the foundation is reviewed. In prestressed concrete containments where a tendon inspection gallery is used, arrangement of the gallery and means of either isolating it from the remainder of the base slab or of relying upon it for some function such as resisting shears are reviewed. b. Containment Enclosure Building Foundation Where the containment enclosure building is constructed of reinforced concrete, it is usually supported on the same mat foundation which supports the containment. Where the containment enclosure building is constructed of structural steel and metal siding, it may surround only the exposed portion of the containment. In such a situation, the enclosure building columns are founded on individual or combined footings at grade level, on the roof of the buildings adjacent to or surrounding the containment, on the dome of the containment, or possibly on brackets anchored to the exterior face of the cylindrical wall of the containment. General arrangement of such foundations is reviewed with particular emphasis on methods of isolating the enclosure building from other buildings in a lateral direction, where this is preferable to minimize seismic interaction. c. Auxiliary Building Foundation The auxiliary building foundation is typically of a mat type, particularly where the supporting medium is soil. The general arrangement of the foundation is reviewed, with particular emphasis on methods of transferring loads from the structure to the foundation media. As augmented by Regulatory