7.5.1
Anchor rods, foundation bolts, and other embedded items shall be set by the ODRC in accordance with embedment drawings that have been approved by the owner's designated representatives for design (ODRD) and the ODRC. The variation in location of these items from the dimensions shown in the approved embedment drawings shall be as follows:
- (a) The vertical variation in location from the specified top of anchor rod location shall be equal to or less than plus or minus 1/2 in. (13 mm).
- (b) The horizontal variation in location from the specified position of each anchor rod centerline at any location along its projection above the concrete shall be equal to or less than the dimensions given for the anchor rod diameters listed as follows:
Anchor rod diameter, in. (mm)
Horizontal Variation, in. (mm)
| ¾ and ⅞ (19 and 22) | ¼ (6) |
| 1, 1¼, 1½ (25, 31, 38) | ⅜ (10) |
| 1¾, 2, 2½ (44, 50, 63) | ½ (13) |
Commentary
The tolerances established in this Section have been selected for compatibility with the holes sizes that are recommended for base plates in the AISC Steel Construction Manual. If special conditions require more restrictive tolerances, such as for smaller holes, the required tolerances should be stated in the contract documents. When the anchor rods are set in sleeves, the adjustment provided may be used to satisfy the required anchor-rod setting tolerances.
7.5.2
Unless otherwise specified in the contract documents, anchor rods shall be set with their longitudinal axis perpendicular to the theoretical bearing surface.
7.5.3
Embedded items and connection materials that are part of the work of other trades, but that will receive structural steel, shall be located and set by the ODRC in accordance with an approved embedment drawing. The variation in location of these items shall be limited to a magnitude that is consistent with the tolerances that are specified in Section 11.3 for the erection of the structural steel.
7.5.4
All work that is performed by the ODRC shall be completed so as not to delay or interfere with the work of the fabricator and the erector. The ODRC shall conduct a survey of the as-built locations of anchor rods, foundation bolts, and other embedded items, and shall verify that all items covered in Section 7.5 meet the corresponding tolerances. When corrective action is necessary, the ODRC shall obtain the guidance and approval of the ODRD.
Commentary
Few fabricators or erectors have the capability to provide this survey. Under standard practice, it is the responsibility of others.