146499 — Working Drawings

499.01 Description

Schedule and distribute working drawings, which are described in AASHTO LRFD Bridge Construction Specification, TC-1.03, TC-4.01, and as specified or required by the Administration. Working Drawings shall exhibit good drafting practices and represent the original work of the Contractor, fabricator, or supplier. Do not duplicate portions of the Plans except to clarify or to add details. When requested, specified, or required by the Administration or consultant, submit calculations and other information deemed necessary to backup working drawings. Sign and seal calculations and other backup material by a professional engineer registered in the State of Maryland.

499.02 Materials

Not applicable.

499.03 Construction

499.03.01 Schedule. As a first order of work, prepare and submit a schedule for the submission

of the working drawings as specified in 499.03.02 or 499.03.03. Coordinate the schedule with and in full accord with the Progress Schedule submitted to the procurement officer as specified in GP- 8.04 and TC-5.02. The schedule shall include each type of working drawings (e.g. form plans, structural steel, etc.), approximate number of drawings to be reviewed, estimated date of first submission, and estimated rate of submission of drawings (e.g. 5/wk). Where possible, submit the most crucial drawings first with sufficient time for review to minimize delays during construction.

499.03.02 Consultant Engineering Firm. When the Contract Documents specify that a

consultant engineering firm is to review the working drawings for the structure, send all working drawings to that firm. To expedite the checking and distribution of working drawings, the Contractor, fabricator, or supplier may send electronic PDF versions or hard copy prints of their submissions directly to the appropriate consultant engineering firm, with copies of all correspondence to the Contractor, Director-Office of Structures, and the District Engineer. If the Contractor requests that all plans be routed through the Contractor’s office, then the establishment of that procedure should be the first order of work in order to avoid possible misunderstandings as to the processing. Be advised 2025 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS that this plan of action will delay the turnaround time and will not constitute grounds for complaint or a time extension. When electronic PDF versions of the working drawings are being reviewed, the consultant engineering firm will forward the accepted and stamped drawings directly to the Administration’s Office of Structures for a secondary review, final stamping, and electronic distribution. When hard copy working drawings are being reviewed, once the primary review determines the working drawings are acceptable as-is, the Contractor, fabricator, or supplier shall furnish to the consultant engineering firm additional prints (number to be furnished by the primary reviewer, up to 10 copies) for stamping and forwarding to the Administration’s Office of Structures for a secondary review and the Administration’s final hard copy distribution. When working drawing submissions warrant revisions, the primary reviewer will return the submission with comments directly to the entity from whom they received the submission. Copies of the transmittal or email returning the submission will be sent to the Engineer and Contractor. Distribution of the working drawings will not occur. Working drawings for structures will not be considered accepted until they are received by the Engineer from the Administration’s Office of Structures and bear the acceptance stamps of both the consultant engineering firm and the Administration’s Office of Structures. All working drawings for the structures will not be considered accepted until they bear the acceptance stamps of both the consultant engineering firm and the Administration’s Office of Structures.

499.03.03 Office of Structures. When no consultant engineering firm is specified, send all

working drawings for the structures to the Director - Office of Structures. To expedite the checking and distribution of working drawings, the Contractor, fabricator, or supplier may send electronic PDF versions or hard copy prints of their submissions directly to the appropriate Office of Structures’ Division’s primary reviewer, as listed above, with copies of all correspondence to the Contractor and the District Engineer. If the Contractor requests that all drawings be routed through the Contractor’s office, then the establishment of that procedure should be the first order of work in order to avoid possible misunderstandings as to the processing. Be advised that this plan of action will delay the turnaround time and will not constitute grounds for complaint or a time extension. When electronic PDF versions of the working drawings are being reviewed, the primary reviewer will forward the accepted and stamped drawings directly to the Administration’s Office of Structures’ secondary reviewer for a secondary review, final stamping, and electronic distribution. When hard copy working drawings are being reviewed, once the primary review determines the working drawings are acceptable as-is, the Contractor, fabricator, or supplier shall furnish to the Office of Structures additional prints (number to be furnished by the primary reviewer, up to 10 copies) for primary stamping and forwarding directly to the Administration’s Office of Structures’ secondary reviewer for a secondary review, final stamping, and distribution. 2025 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS When working drawing submissions warrant revisions, the primary or secondary reviewer will return the submission with comments directly to the entity from whom they received the submission. Copies of the transmittal or email returning the submission will be sent to the Engineer and Contractor. Distribution of working drawings will not occur. Working drawings for structures will not be considered accepted until they are received by the Engineer and bear the acceptance stamps of (a) the Structures Engineering Division (SED) or the Structures Remedial Engineering Division (SRED) and, (b) the Administration’s Office of Structures (OOS).

499.03.04 Distribution of accepted working drawings. All accepted working drawings will be

distributed either electronically or by hard copy by the Office of Structures’ secondary reviewer. Accepted electronic submittals will be distributed to the Engineer, the primary reviewer, and the Administration. The Engineer will distribute the electronic accepted working drawings to the Contractor for the Contractor’s further distribution to their fabricator and suppliers. Accepted hard copy submissions will be distributed by the Office of Structures to the Engineer, primary reviewer, Contractor, fabricator, suppliers, and to internal SHA offices. Additionally, scanned electronic PDFs will be sent to the Engineer, internal SHA offices, and primary reviewer. For working drawings submitted and accepted electronically, furnish to the Engineer, upon request, up to 10 full size hard copy color prints of all accepted working drawings, calculations, sketches, cut sheets, etc.

499.03.05 Revisions and Substitutions. Send all structural Contract Document modification

requests only to the Director-Office of Structures for review and acceptance. Do not submit any affected working drawings without receiving a written acceptance from the Director-Office of Structures. Any modifications implemented by a working drawing submission, without written acceptance from the Administration’s Director-Office of Structures, will be subject to the requirements of GP-5.02.

499.04 Measurement and Payment

This work will not be measured but the cost will be incidental to other pertinent items. 2025 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS 501 — UNTREATED AGGREGATE BASE COURSES CATEGORY 500 PAVING SECTION 501 — UNTREATED AGGREGATE BASE COURSES

501.01 Description

Construct base courses using one of the following:

501.02 Materials

Graded Aggregate for Base Course 901.01 Recycled Concrete, Graded Aggregate 900.03.02 Production Plant Section 915 Water 921.01 Moisture and Dust Control Agents 921.02

501.03 Construction

At least 30 days prior to the start of constructing the base course, submit the proposed plants, equipment, and material sources for approval. Protect the subgrade and base against damage from all causes. Repair or replace damaged areas. Unless protected by a concrete traffic barrier, limit excavation for widening to an area that can be wedged the same day using graded aggregate base. Refer to Standard No. 104.01-28 for the area to be wedged. Maintain the temporary graded aggregate base wedge with a 4:1 or flatter fill slope when there is no barrier. Compact the material as indicated elsewhere in this specification. Leave the graded aggregate base wedge in place until placement of the next layer.

501.03.01 Equipment. All equipment, including the production plant and on-site equipment, is

subject to approval. Have the plant ready for inspection at least 48 hours prior to the start of construction operations. 2025 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS