General Construction Specifications
SECTION 01050
FIELD ENGINEERING
PART 1 - GENERAL
1.1 Section Includes
A. Quality Control.
B. Submittals.
C. Project Record Documents.
1.2 Related Sections
A. As-Built Drawings from any previous construction on the site or route.
B. Section 01720 - Project Record Documents.
1.3 Quality Control
A. Employ a land surveyor registered in The State of Tennessee and acceptable to the Engineer.
B. Employ a professional engineer registered in the State of Tennessee of the discipline required for specific service on the project.
C. The location of existing piping and underground utilities, such as gas mains, water mains, electric duct lines, etc., as shown on the Contract Drawings, have been determined from the best available information, by actual surveys, or furnished and taken from the records of the parent Utility Companies and drawings of the existing facilities. However, the Owner does not assume responsibility for the possibility that during construction utilities other than those shown may be encountered or that actual location of those shown may be different from the locations designated on the Contract Drawings.
At the locations wherein detailed positions of these facilities become necessary to the new construction, the Contractor shall, at his own expense, furnish all labor and tools to either verify and substantiate the record drawing location or definitely establish the position of the facilities.
Because of the nature of the Work, minor adjustments may be required in new construction to meet existing conditions. Such adjustment shall be the responsibility of the Contractor and shall be coordinated with and approved by the parent utility. No compensation shall be allowed for such adjustment except as provided for in the Proposal and Agreement.
D. Contact one call center (1-800-351-1111) for location of buried facilities.
E. For projects requiring new pipeline work, the Contractor shall employ a professional Audio-Video Firm to furnish color audio-video recordings for the construction site and/or route as described in Section 01310 - Progress Schedules.
1.4 Submittals
A. Submit name, address and telephone numbers for surveyor and engineer before starting work.
B. On request, submit documentation verifying accuracy of survey work.
C. On pipeline installation, one week prior to the commencement of trench excavation, the Contractor shall prepare and submit to the Engineer for review four (4) copies of detailed cut sheets showing the beginning and ending manholes; the distance between manholes; the grade; size and type of line; the depth of cut. The form of cut sheet will be provided to the Contractor. All expenses for the preparation of cut sheets shall be borne by the Contractor and be included in the unit price bid per foot of pipe. Cut sheets must be reviewed by the Engineer in writing before trenching operations may be permitted. It shall be the responsibility of the Contractor to prepare cut sheets (one week) in advance of his anticipated trenching schedule.
1.5 Project Record Documents
A. Maintain a complete and accurate log of control and survey work.
B. As construction progresses record the As-built location of all structural, process, piping, mechanical, electrical and site components.
C. Maintain and submit Project Record Documents under provision of Section 01720 - Project Document Records.
1.6 Examination
A. Verify locations of all survey control items (base lines and benchmarks) prior to starting work.
B. Promptly notify Engineer of any discrepancies.
1.7 Survey Reference Points
A. Owner will establish sufficient base lines and benchmarks for construction of project.
B. The Contractor shall protect control points prior to starting site work and preserve permanent reference points during construction.
C. Promptly report to Engineer the loss or destruction of any reference point or relocation required by accident or design.
D. Replace dislocated survey control points based on original survey control. Make no changes without prior written notice to the Engineer.
1.8 Survey Requirements
A. Provide field engineering services using recognized engineering survey practices.
B. Establish elevations, lines and levels for:
1. Site improvements: stakes for grading, fill and cut, utility locations, slopes and inverts.
2. Grids for structure location.
3. Batter boards and corners for foundations, slabs, columns, and floors.
C. Pipeline installation: The Contractor shall be responsible for setting all grade stakes, lines and levels and preparation of cut sheets. The Contractor shall provide level, level rod and tripod on the job site at all times for the purpose of checking grades as deemed necessary by the Engineer.
The requirement for this work to be performed by a registered land surveyor may be waived by the Engineer in the event that the Contractor desires to utilize his own personnel who are qualified to set grade and alignment stakes.
The Contractor may use batter boards or a properly calibrated beam devise. No claim for extra work will be allowed for alleged inaccuracy of the laser beam device. Grade hubs for laser beams shall not exceed 100 feet apart with centerline hubs every 50 feet to check laser and grade between manholes.
If the Contractor elects to use batter boards, he shall provide and maintain on the Work at all times a gauge rod of sufficient length to reach from the invert of the sewer being laid to the top line strung on the three batter boards. The gauge rod shall be graduated and numbered each foot of its entire length. The gauge rod shall be equipped with either a plumb line or two spirit levels and the utmost care used to insure a truly vertical gauge rod at the time a reading is taken and pipe is being set.
D. Periodically verify all layouts.
1.9 Surveys for Measurement and Payment
A. Perform surveys to determine quantities of unit cost work.
PART 2 - PRODUCTS
A. Not used.
PART 3 - EXECUTION
A. Not used.
END OF SECTION
