SECTION 017123LAYOUT OF WORK AND SURVEYS

PART 1 - GENERAL

1.1RELATED DOCUMENTS

  1. Contract Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division01 Specification Sections, apply to this Section.

1.2SUMMARY

  1. This Section includes the procedures and accuracy requirements for survey services for layout of work and field measurement of work quantities to be determined by surveys.
  2. The Work is to be verified and coordinated with Contract Drawings. Variations between Contract Drawings and actual field conditions are to be immediately brought to the attention of the Project Manager.
  3. Reference Standard Specifications for Construction General Contract Conditions, Article 318 “Construction Surveys” andArticle 319 “Preservation of Permanent Land Survey Control Markers”.

1.3SUBMITTALS

  1. Refer to Division 01 Sections “Submittals” and “Shop and Working Drawings, Product Data,and Samples” for the submittal process.
  2. Field Notes: Submit Copies of original pages of field notes.
  3. Closeout Submittals:
  4. Original field notebooks when filled and at end of contract.
  5. Measurements for Record Documents.

PART 2 - PRODUCTS (Not Used)

PART 3 - EXECUTION

3.1CONSTRUCTION LINES AND GRADES

  1. The Contractor shall make surveys and layouts as necessary to delineate the work. The Contractor shall make the surveys for the proper performance of the Work. As a part of such surveys, the Contractor shall furnish, establish, and maintain in good order survey control points that may be required for the completion of the Work subject to the approval of the Project Manager as to their location, sufficiency, and adequacy. However, such approval by the Project Manager shall not relieve the Contractor of his responsibility for the accuracy of his survey work.
  2. The Contractor shall furnish skilled labor, instrument platforms, ladders, and such other temporary structures as may be necessary for making and maintaining points and lines regarding the surveys required.
  3. The City may draw the Contractor’s attention to errors or omissions in lines or grades, but the failure to point out such errors or omissions shall not give the Contractor any right or claim nor shall in any way relieve the Contractor of his obligations according to the terms of this contract.
  4. The Contractor’s instruments and other survey equipment shall be accurate, suitable for the surveys required in accordance with recognized professional standards and in proper condition and adjustment always. Surveys shall be performed under the direct supervision of a Colorado licensed surveyor.

3.2DIGITAL FILES

  1. If approved by the Project Manager, the Contractor may elect to utilize theDesign Consultant’s digital CAD files as guidance for layout and location of site elements.
  2. Layout and location of site elements, grades and features from digital CAD files does not relieve the Contractor of requirements, locations and grades shown on the Contract Drawings.
  3. Contractor is responsible to verify locations of elements staked with digital data to assure conformance with the Contract Drawings at a level of accuracy as stated in Section 3.3 below.

3.3SURVEYING ACCURACY AND TOLERANCES IN SETTING SURVEY, LAYOUT, AND QUANTITY CALCULATION STAKES

  1. The tolerances generally applicable in setting survey stakes shall be as set forth in the CDOT’s Survey Manual, latest edition. Such tolerances shall not supersede stricter tolerances required by the drawings or specifications, and shall not otherwise relieve the Contractor of responsibility for measurements in compliance therewith.

3.4RECORD MEASUREMENTS

  1. Provide record measurement for items that will be hidden or visible including all civil, mechanical and electrical, control work, and all utilities that are placed in concrete, earth, or behind walls shall be made.
  2. Items located within or five feet (5’) beyond a building shall be referenced to building column lines and finish floor elevations.
  3. Special attention shall be paid to items requiring service, sensors, items with moving parts, access points and locations of junctions, elevation changes, and directional changes.

PART 4 - MEASUREMENT AND PAYMENT

4.1MEASUREMENT

  1. No separate measurement shall be made for work under this Section

4.2PAYMENT

  1. No separate payment will be made for work under this Section. The cost of the work described in this Section shall be included in the Contract price.

END OF SECTION 017123

LAYOUT OF WORK AND SURVEYS

017123 - 1

January 2018