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Edgewater Creek Bridge Replacement November 2023 15 1 The Contractor shall submit the computed elevations at the top of bridge decks as a Type 2 2 Working Drawing. The elevations shall be computed at tenth points along the centerline 3 of each girder web. 4 5 The Contractor shall ensure a surveying accuracy within the following tolerances: 6 7 Vertical Horizontal 8 1. Stationing on structures ±0.02 feet 9 2. Alignment on structures ±0.02 feet 10 3. Superstructure elevations ±0.01 feet 11 variation from 12 plan elevation 13 4. Substructure ±0.02 feet 14 variation from 15 Plan grades. 16 17 Buried structures shall be within the tolerances described in Section 6-20.3. 18 19 The Contracting Agency may spot-check the Contractor's surveying. These spot-checks 20 will not change the requirements for normal checking by the Contractor. 21 22 When staking the following items, the Contractor shall perform independent checks from 23 different secondary control to ensure that the points staked for these items are within the 24 specified survey accuracy tolerances: 25 26 Piles 27 Shafts 28 Footings 29 Columns 30 31 The Contractor shall calculate coordinates for the points associated with piles, shafts, 32 footings and columns. The Contracting Agency will verify these coordinates prior to 33 issuing approval to the Contractor for commencing with the survey work. The Contracting 34 Agency will require up to seven calendar days from the date the data is received to issuing 35 approval. 36 37 Contract work to be performed using contractor-provided stakes shall not begin until the 38 stakes are approved by the Contracting Agency. Such approval shall not relieve the 39 Contractor of responsibility for the accuracy of the stakes. 40 41 Payment 42 Payment will be made for the following bid item when included in the proposal: 43 44 "Structure Surveying", lump sum. 45 46 The lump sum contract price for "Structure Surveying" shall be full pay for all labor, 47 equipment, materials, and supervision utilized to perform the Work specified, including 48 any resurveying, checking, correction of errors, replacement of missing or damaged 49 stakes, and coordination efforts. 50 51