1-05.4	Conformity With and Deviations from Plans and Stakes 

Supplement this section with the following:

Bridge and Structure Surveys 
(July 23, 2015  APWA GSP, Option 2)

For all structural work such as bridges and retaining walls, the Contractor shall retain as a part of Contractor’s organization an experienced team of surveyors.

The Contractor shall provide all surveys required to complete the structure, except the following primary survey control which will be provided by the Engineer:
1.	Centerline or offsets to centerline of the structure.
2.	Stations of abutments and pier centerlines.
3.	A sufficient number of bench marks for levels to enable the Contractor to set grades at reasonably short distances.
4.	Monuments and control points as shown in the Plans.

The Contractor shall establish all secondary survey controls, both horizontal and vertical, as necessary to assure proper placement of all project elements based on the primary control points provided by the Engineer.  Survey work shall be within the following tolerances:
Stationing	± 0.01 foot
Alignment 	± 0.01 foot (between successive points)
Superstructure Elevations 	± 0.01 foot (from plan elevations)
Substructure Elevations 	± 0.05 foot (from plan elevations)

During the progress of the work, the Contractor shall make available to the Engineer all field books including survey information, footing elevations, cross sections and quantities.

The Contractor shall be fully responsible for the close coordination of field locations and measurements with appropriate dimensions of structural members being fabricated.