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<br />2025 FEDERAL OVERLAY, BROADWAY – CALIFORNIA ST TO 18TH ST SPECIAL PROVISIONS <br />FEDERAL AID# STBGUL-2715(012); COE PW# 3841 SP-118 May 6, 2025 <br /> <br />(******) 1 <br />Contractor Surveying – Roadway Striping and Channelization 2 <br /> 3 <br />No survey control data or layout will be furnished by the Contracting Agency. 4 <br />The Contractor shall be solely responsible for detailed documentation (records) 5 <br />of all existing pavement markings and channelization in the field prior to grinding 6 <br />operations. This work includes but is not limited to: field notes, sketches, offset 7 <br />markings on curbs or staking if no curb exists. 8 <br /> 9 <br />The records and offset marking/staking shall be adequate to allow the pavement 10 <br />markings to be reproduced to a level of accuracy shown below: 11 <br /> 12 <br />Lane widths ±0.1 feet (normal to alignment) 13 <br />Longitudinal location of arrows and letters ±1.0 feet (parallel to alignment) 14 <br />Longitudinal location of stop lines ±1.0 feet (parallel to alignment) 15 <br />Transverse location of arrows and letters ±0.1 feet (normal to alignment) 16 <br />Longitudinal location of transitions and tapers ±1.0 feet (parallel to alignment) 17 <br />Pavement marking starts and stops ±1.0 feet (parallel to alignment) 18 <br /> 19 <br />The Contractor shall provide copies of any calculations, notes, and layout data 20 <br />to the Engineer, or their assigned representative, prior to grinding. The 21 <br />Contracting Agency will review the provided data, check the existing layout and 22 <br />provide revisions as necessary for establishment of lane widths, arrow and letter 23 <br />locations, tapers, transitions, other modifications, and pavement seams. The 24 <br />Contracting Agency will require up to seven calendar days from the date the 25 <br />data is received to conduct this review. No pavement grinding will be allowed 26 <br />before this review is complete. The Contractor will make adjustments to the curb 27 <br />marking and stakes to match the revisions prior to grinding. 28 <br /> 29 <br />Based on these records and/or the offset staking, the Contractor shall perform 30 <br />all field marking and preliminary spotting for all pavement marking and 31 <br />channelization following grinding operations, for temporary only. The 32 <br />Contracting Agency shall perform all field marking for permanent pavement 33 <br />marking and channelization. All calculations, surveying, and measuring required 34 <br />for setting and maintaining the necessary lines for the temporary pavement 35 <br />marking shall be the Contractor's responsibility. 36 <br /> 37 <br />Preliminary spotting shall be provided at a spacing of 40 foot maximum on 38 <br />tangents and 25 foot maximum on curves and tapers. All curves, tapers, stop 39 <br />lines, and crosswalks shall be laid out with a rope. Field layout for curves and 40 <br />tapers shall use an 800’ minimum length rope. The color of the material used 41 <br />for preliminary spotting shall be white. Longitudinal marking shall be parallel 42 <br />with the proposed line applied with a paint marker wand or other approved 43 <br />method, a minimum of 6 inches in length and wide enough so that a minimum 44 <br />of two marks can be clearly seen at night under ordinary headlight conditions. 45 <br />Refreshing of marks prior to striping shall be the responsibility of the Contractor. 46 <br /> 47 <br />Personnel performing the field layout and preliminary spotting shall be proficient 48 <br />in the practice of striping layout, including layout and preliminary spotting of 49 <br />curves and tapers using a rope and paint wand, proper annotation on the 50 <br />pavement of starts, stops, and changes in line type for pavement markings, and 51