All members designated as AESS shall be clearly identified to a Category, either AESS 1, 2, 3, 4, or C, in the approval documents. Tack welds, temporary braces, backing, and fixtures used in fabrication of AESS shall be shown in the fabrication documents. Architecturally sensitive connection details shall be submitted for approval by the owner's designated representative for design prior to completion of the approval documents.
| ID | Characteristics | Reference Section | Category | |||
|---|---|---|---|---|---|---|
| AESS 4 | AESS 3 | AESS 2 | AESS 1 | |||
| Showcase Elements | Feature Elements in Close View | Feature Elements not in Close View | Basic Elements | |||
| 1.1 | Butt and plug weld reinforcement limited to 1/16 in. (2 mm) | 10.4.9 | • | • | ||
| 1.2 | Surface preparation to meet paint specification | 10.4.11 | • | • | • | • |
| 1.3 | Sharp edges eased | 10.4.7 | • | • | • | • |
| 1.4 | Continuous weld appearance | 10.4.8 | • | • | • | • |
| 1.5 | Consistent bolt appearance | 10.4.1(g) | • | • | • | • |
| 1.6 | Weld spatters removed | 10.4.8 | • | • | • | • |
| 2.1 | Mock-ups | 10.1.2 | • | • | Optional | |
| 2.2 | The fabricated product shall have one-half the applicable ASTM or AWS straightness tolerance | 10.4.3(b) & 10.4.5 | • | • | • | |
| 2.3 | Fabrication, and erection marks not visible | 10.4.2 | • | • | • | |
| 3.1 | Mill marks not visible | 10.4.2 | • | • | ||
| 3.2 | Butt and plug welds ground smooth and filled | 10.4.9 | • | • | ||
| 3.3 | HSS weld seam oriented for reduced visibility | 10.4.12 | • | • | ||
| 3.4 | Cross-sectional abutting surfaces aligned | 10.4.3(a) | • | • | ||
| 3.5 | Joint gap tolerances minimized | 10.4.6 | • | • | ||
| 4.1 | HSS seam treated to comply with mock-up | 10.4.12 | • | |||
| 4.2 | Welds contoured and blended | 10.4.8 | • | |||
| 4.3 | Surfaces filled and sanded | 10.4.7 | • | |||
| 4.4 | Weld show-through to meet acceptance criteria established by mock-up | 10.4.10 | • | |||
established by mock-up
Notes
- AESS C are custom elements with characteristics described in the contract documents.
- Standard structural steel contains no AESS characteristics.
Commentary
Variations, if any, from the AESS Categories listed must be clearly noted. These variations could include machined surfaces, locally abraded surfaces, and forgings. In addition, if distinction is to be made between different surfaces or parts of members, the transition line/plane must be clearly identified/defined on the approval documents.