By American Institute of Steel Construction
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Additional info for AISC N690-12 Specification for Safety-Related Steel Structures for Nuclear Facilities
7. Dimensional Tolerances Replace section with the following: Dimensional tolerances shall be in accordance with Code of Standard Practice, Section 6, and as listed below. For acceptable tolerances not found in the Code of Standard Practice or not listed below, the engineer of record shall provide the necessary tolerances. (1) Holes A variation from the detailed distance of z in. (2 mm) center-to-center of holes is permissible for members 30 ft (9 m) or less, and 8 in. (4 mm) for members over 30 ft (9 m) in length.
Planing of Edges Replace section with the following: Planing or finishing of sheared or thermally cut edges of plates or shapes is not required unless specifically called for in the construction documents or included in a stipulated edge preparation for welding. Planed or finished edges shall not vary by more that 8 in. (3 mm) from a true plane. 4. 6M except as modified in Section J2. 7. Dimensional Tolerances Replace section with the following: Dimensional tolerances shall be in accordance with Code of Standard Practice, Section 6, and as listed below.
6-2 are not applicable. The QAI need not be present during the installation of fasteners in snug-tight joints. 6-2. The QAI need not be present during the installation of fasteners when these methods are used by the installer. 6-2. The QAI shall be engaged in their assigned inspection duties during installation of fasteners when these methods are used by the installer. 6-3. In these tables, the inspection tasks are as follows: O—Observe these items on a random basis. Operations need not be delayed pending these inspections.