Note that the tolerance is not stated in terms of a

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Note that the tolerance is not stated in terms of a linear displace- ment at any point and is not to be taken as the overall length between supports divided by 500. Typical examples are shown in Figure C–7.7. Numerous conditions within tolerance for these and other cases are possible. This condition applies to both plan and elevation tolerances. 7.13.1.3. For members that are identified as Adjustable Items by the Owner’s Designated Representative for Design in the Contract Documents, the Fabricator shall provide adjustable Connections for these members to the supporting Structural Steel frame. Otherwise, the Fabricator is permitted to provide non-adjustable Connections. When Adjustable Items are specified, the Owner’s Designated Representative for Design shall indicate the total adjustability that is required for the proper alignment of these supports for other trades. The variation in the position and alignment of Adjustable Items shall be as follows: Code of Standard Practice for Steel Buildings and Bridges , March 7, 2000 AMERICAN INSTITUTE OF STEEL CONSTRUCTION 60
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PAGE 99 APPENDIX (a) The variation in the vertical distance from the upper finished splice line of the nearest column to the support location speci- fied in the structural Design Drawings shall be equal to or less than plus or minus 3/8 in. [10 mm]. (b) The variation in the horizontal distance from the established finish line at the particular floor shall be equal to or less than plus or minus 3/8 in. [10 mm]. (c) The variation in vertical and horizontal alignment at the abut- ting ends of Adjustable Items shall be equal to or less than plus or minus 3/16 in. [5 mm]. Commentary: When the alignment of lintels, wall supports, curb angles, mullions and similar supporting members for the use of other trades is required to be closer than that permitted by the foregoing tolerances for Structural Steel, the Owner’s Designated Representative for Code of Standard Practice for Steel Buildings and Bridges , March 7, 2000 AMERICAN INSTITUTE OF STEEL CONSTRUCTION 61 Figure C-7.7. Alignment tolerances for members with field splices.
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APPENDIX PAGE 100 Design must identify such items in the Contract Documents as Adjustable Items. 7.13.2. In the design of steel structures, the Owner’s Designated Representative for Design shall provide for the necessary clear- ances and adjustments for material furnished by other trades to accommodate the mill tolerances, fabrication tolerances and erec- tion tolerances in this Code for the Structural Steel frame. Commentary: In spite of all efforts to minimize inaccuracies, deviations will still exist; therefore, in addition, the designs of prefabricated wall pan- els, partition panels, fenestrations, floor-to-ceiling door frames and similar elements must provide for clearance and details for adjust- ment as described in Section 7.13.2. Designs must provide for adjustment in the vertical dimension of prefabricated facade panels that are supported by the Structural Steel frame because the accu- mulation of shortening of loaded steel columns will result in the
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