Modification to Specification 05 50 14 paragraph 1.3.4 (1).pdf

concrete, painting, delivery, etc. Completed work shall be clearly identified on the schedule updates.

1.3.3 Qualification Of Structural Steel Fabricator

The fabricating plant and fabricator must be certified under the AISC (American Institute of Steel Construction) Quality Certification Program, and must be designated an AISC Certified Plant, Category CBR: Major Bridge Fabrication, IBR: Certified Bridge Fabricator - Intermediate, ABR:

Certified Bridge Fabricator - Advanced or HYD: Certified Hydraulic Fabricator at time of bid. The fabricator or fabrication plant must possess five 5 years documented experience on projects of similar scope. Similar scope means projects of similar size and similar amounts of welding and detail types. Submit copies of the AISC certificate indicating that the fabrication plant meets the specified structural steelwork category and documented experience.

1.3.4 Shop Drawing

All shop drawings must be prepared by a Registered Professional Engineer or under the direct supervision of a Registered Professional Engineer. All shop drawings must be prepared in accordance with AISC 325 and AISC 326.

Return elements of fabricated items inadvertently omitted on contract drawings to the Engineer of Record for detailing unless they are to be detailed by the fabricator and so indicated on the shop drawings. Cloud any and all details developed by the fabricator on the shop drawings for separate approval by the Engineer of Record. No splices shall be included in the structure without approval of the Engineer of Record. Provide a unique identifier to permit tracking on the weld tracking log for each weld. Fabrication of the structures prior to shop drawings being approved by the Government is prohibited. Show complete details of materials, tolerances, connections, and proposed welding sequences on the shop drawings. Include catalog cuts, templates, fabrication and assembly details, and type, grade, and class of materials, as appropriate in the shop drawings. Provide a table containing a list of all members and a reference to each material certificate and test report that applies to that member. Identify weld procedures and NDE required for each weld on shop drawings. Cloud any and all splices in the shop drawings for engineer approval. All native model files used for the development of shop drawings shall be provided to the Government as part of the shop drawing submission.

1.3.5 Welding Qualifications

Prior to welding, submit certification for each welder stating the type of welding and positions qualified for, the code and procedure qualified under, date qualified, and the firm and individual certifying the qualification tests. Prior qualification will be accepted if welders have performed satisfactory work under the code for which qualified within the preceding three months. Welders are required to repeat the qualifying tests when their work indicates a reasonable doubt as to proficiency. Those passing the requalification tests will be recertified. Those not passing will be disqualified until passing.

Contractor incurs all expenses in connection with qualification and requalification.

Conform to all requirements specified in AWS D1.1/D1.1M.

PART 2 PRODUCTS