547 SECTION 639 CONSTRUCTION SURVEYING
639.1 -DESCRIPTION : This work consists of construction surveying, calculations, and staking, in accordance with these specifications.
639.2 -MATERIALS : Provide the necessary materials to complete the specified surveying services.
CONSTRUCTION METHODS
639.3 -CONSTRUCTION LAYOUT STAKES : The Division shall provide, to the Contractor, reference points along the line of improvement for proper layout of work. The reference points will serve as the horizontal and vertical control for the project. The Contractor shall provide field forces and shall set all additional stakes needed, such as offset stakes, reference point stakes, slope stakes, pavement and curb line and grade stakes, stakes for bridges, sewers, roadway drainage, pipe underdrains, pave d gutter, fence, culverts or other structures, supplementary bench marks, and any other horizontal or vertical controls necessary to secure a correct layout of the work. The Contractor shall also do all layout work and shall set stakes necessary for carryi ng out utility changes when such utility changes are an obligation of the Contractor under the Contract. The location of the slope stakes for grading work shall be determined by a calculation method. Stakes for line and grade of pavement and curb shall b e set at station intervals of twenty -five ( 25) feet maximum distance on curves and at fifty ( 50) feet maximum distance on tangents. Elevation control points with guard stakes shall be set, at a convenient distance outside the construction limits, opposite every fifty ( 50) foot station and all stations where original cross -sections have been taken. The centerline station, the distance from centerline, and the elevation of the hub shall be recorded on each guard stake. For right -of-way staking, iron pins ( WVDOT CAP on #5 Bar, 36” in length) with guard stakes shall be set on both sides of roadway at all locations where right -of-way changes width; the station number and the distance from the centerline shall be marked on each guard stake. The Contractor shal l be responsible for having the layout staking work conform to the lines, grades, elevations, and dimensions called for on the Plans. The Contractor shall furnish a copy of their survey records for checking by the Engineer and for the Division's permanent file. These records shall be furnished as they are completed during the progress of the work. Any inspection or checking of the Contractor's layout by the Engineer and the acceptance of all or any part of it shall not relieve the Contractor of their res ponsibility to secure the proper dimensions, grades, and elevations of the several parts of the work. The Contractor shall exercise care in the preservation of stakes and bench marks and shall have then reset at their expense when any are damaged, lost, d isplaced or removed. The Contractor shall use competent personnel and suitable equipment for the layout work required and shall provide that it be done under the supervision of, or directed by, a Registered Professional Engineer or Professional Surveyor. The Contractor shall not engage the services of any person or persons in the employ of the Division for the performance of any of the work covered by this item.
548 639.4 -AS-BUILT UTILITY SURVEY : The Contractor shall locate and submit to the Division an “As -Built” survey of all of the specified items being performed as part of the project under Sections 631, 657, 658, 659, 660, 661, 662, and 664. Meeting the following minimum survey requirements:
Elevation reference is NAVD88. All units shall be US Survey Feet.
from the true location of the point.
Survey data shall be submitted in a comma separated value (.csv) formatted file. The file structure shall be as defined below: POINT NAME, NORTHING, EASTING, SURFACE ELEVATION, CODE, ATTRIBUTE, DEPTH
The elements of the file structure shall are defined below:
tenth of a foot.
tenth of a foot.
in US Survey Feet reported to the nearest tenth of a foot.
further define the point as described in Table 639.3.2 .
field measured distance from the top of the conduit to the top of the trench in US Survey Feet to the nearest tenth of a foot.
549 TABLE 639.3.2 Feature Codes And Attributes Feature Code Attribute Description DOH_CNDT Conduit diameter and material type
i.e. “6 -Inch Plastic” This value shall be for any underground conduit, as surveyed in the trench.
Point shall be the location(s) of the terminal.
Intermediate points shall be at significant transitions (i.e. – elbow, tee, bends, etc.) and/or within 75’ of adjacent conduit point. DOH_CNSTA Mounting type (Pole or ground) and electrical service (underground or /overhead)
i.e. “Ground -Overhead” This value is for a DOH Lighting Control Station or DOH Signal Control Cabinet.
Four (4) corner points of the concrete pad or fence whichever is the greatest in width. DOH_JBOX Box size
i.e. “18x18” This value is a single point in the center top of a DOH electrical Junction Box DOH_SGNP Signal Pole Type (C1, C1L, A1, A1L, E)
i.e. “E” This value is a single point at a DOH Signal Pole DOH_LITP Light Type (I thru VII)
i.e. “III” This value is a single point at a DOH Light Pole DOH_LITSGN Sign Type (advanced flasher, school zone, overhead cantilever structure, overhead truss structure, etc)
i.e. “Overhead Truss Structure” This value is a single point at a DOH Lighted Sign. DOH_MISC Description of item
i.e. “RWIS” This value is for all other DOH Utility items.
Such as CCTV, RWIS, Free Pass, Message Sign, Weigh in Motion, Signal Loop
550 The survey records generated shall be the property of the Division and shall be available to the Engineer for inspection or reproduction at all times. All survey records shall be transmitted before final project acceptance.
639.5-METHOD OF MEASUREMENT : "Construction Layout Stakes" will be measured as a complete unit. “As-Built Utility Survey” will be measure d as a complete unit.
639.6-BASIS OF PAYMENT : The quantity, determined as provided above, will be paid for at the contract unit price bid for the item below, which price and payment shall be full compensation for furnishing, setting, maintaining, and resetting, when necessary, the stakes, and for furnishi ng all engineering personnel, equipment, materials, and all incidentals. When “Construction Layout Stake” or “As -Built Utility Survey” begins on a section of the project, the payment shall be per lump sum on a monthly basis at partial payments equal to months of contract time remaining. Upon completion of all work on each section, the remaining amount will be released.
639.7-PAY ITEMS : ITEM DESCRIPTION UNIT 639001 -* Construction Layout Stake Lump Sum 639003 -* As-Built Utility Survey Lump Sum
* Sequence number