642.04 Construction Staking
608 SECTION 642
642.01 Description
This work consists of providing, placing, and maintaining construction layout stakes for the proper prosecution and inspection of the work.
642.02 Materials — Vacant
642.03 Equipment — Vacant
642.04 Construction Methods
Stake the line and grade of construction features. Depending on the availability of the Department’s survey staff, the Contract may require either Construction Staking – Level I or Level II.
A.Construction Staking – Level I
1.Department Responsibilities The Department will perform the following construction staking activities: Locate and reference the centerline or control line of permanent construction; Stake the right -of-way lines; Identify and verify bench marks; Take original and final cross sections for earthwork construction features to obtain volumes for pay quantities; Set major control points on the tangents and at the beginning and ending points of curves on th e centerline or control line; and Establish bench marks for bridges and special structures. If the survey centerline and the construction reference line are not the same, the Resident Engineer will set the major control points on the construction reference line.
2.Contractor Responsibilities Perform the following construction staking activities: Set additional stakes and other horizontal or vertical controls to establish a correct work layout; Stake the centerline or control line of temporary features; If the Contract requires measurement of earthwork quantities using photogrammetry, clear and grub the required area for the project before taking the original photos or beginning the excavation work; Place stakes for line and grade to maintain the tolerances specified in the Contract for the operation being performed; and CONSTRUCTION STAKING 642.04 609 On grade stakes, mark the station number and the distance from the centerline of construction. Preserve survey stakes and bench marks and reset if damaged, lost, or removed. Provide qualifi ed staff with appropriate equipment to perform construction layout work. The Department will not allow the use of Department employees or Department -owned equipment for construction staking work that is the responsibility of the Contractor.
B.Constructio n Staking – Level II
1.Department Responsibilities The Department will take original and final cross sections for earthwork construction features to obtain volumes for pay quantities.
2.Contractor Responsibilities Perform the following construction sta king activities: Locate and reference the centerline of permanent construction; Stake the right -of-way lines; Identify and verify bench marks; Set major control points on the tangents and at the beginning and ending points of curves to mark the centerline; Establish bench marks for bridges and special structures. Set additional stakes and other horizontal or vertical controls to establish a correct work layout; Stake the centerline or control line of temporary features; If the Contract requires measurement of earthwork quantities using photogrammetry, clear and grub the required area for the project before taking the original photos or beginning the excavation work; Place stakes for line and grade to maintain the tolerances specified in the Contract for the operation being performed; and On grade stakes, mark the station number and the distance from the centerline of construction. If the survey centerline and the construction reference line are not the same, the Resident Engineer will set the major control po ints on the construction reference line. Preserve survey stakes and bench marks and reset if damaged, lost, or removed. Provide qualified staff with appropriate equipment to perform construction layout work. The Department will not allow the use of Depar tment employees or Department -owned equipment for construction staking work that is the responsibility of the Contractor. Notify the Resident Engineer if bench marks or major survey control points previously established by the Department have been destroye d, damaged, or removed. The Resident Engineer will re -establish the control points.
642.06 Construction Staking
610 C. Error Correction and Resident Engineer Notification Provide platforms and equipment for safe access to check the staking. If significant errors occur, resurvey to the satisfaction of the Resident Engineer. Regardless of inspection or acceptance of the layout by the Department, the Contractor is responsible for establishing the proper dimensions, grades, and elevations for the work. The Resident Engineer will resolve pl an errors. Notify the Resident Engineer of plan errors by the end of the next working day. The Resident Engineer will perform special surveys to determine corrective action for plan errors. Measure the profiles of existing highway features that will conn ect to the project for 100 ft [30 m]. If the profiles of the project and the existing features do not match, immediately notify the Resident Engineer. Ensure the surface of the finished Project creates a smooth ride for the entire length of the Project. Verify the original cross sections. If requested, the Department will provide original cross sections. Resolve disputes regarding the Department’s original cross sections before beginning earthwork activities in the disputed areas. The Resident Engineer may suspend contract time if the dispute resolution stops work that is critical to the timely completion of the Project. If requested, the Resident Engineer will provide the completed final cross sections. For a dispute regarding original or final cross sections, jointly gather the cross section data with the Resident Engineer’s surveyors to resolve the dispute. Perform survey work, compilation of field notes, and documentation in accordance with the ODOT “Guide for Construction Staking.”
642.05 Method O F Measurement
Unless specified in the Contract, the Department will measure the volumes of pay quantities and perform survey control of permanent facilities.
642.06 Basis of Payment
The Department will pay for each pay item at the contract unit price per t he specified pay unit as follows: Pay Item: Pay Unit:
A.CONSTRUCTION STAKING LEVEL I Lump Sum
B.CONSTRUCTION STAKING LEVEL II Lump Sum The Department will make a partial deduction of payment for staking if the notifications specified in Subsection 642.04.C, “Error Correction and Resident Engineer Notification,” are not made. CONSTRUCTION STAKING 642.06 611 The Department will pay for construction staking in accordance with the following: 25 percent on first pay estimate 25 percent when 10 percent of the contract work is completed 25 percent when 50 percent of the contract work is completed 15 percent when 75 percent of the contract work is completed 10 percent when the Resident Engineer verifies that all construction features have b een properly placed and completed, the Contractor has submitted all staking documentation to the Engineer, and the Engineer has accepted the staking documentation. 613 CHAPTER 700 MATERIALS SECTION: PAGE NO.: SECTION 701 PORTLAND CEMENT CONCRETE ................................ ................................ ...................... 615 SECTION 702 SUPPLEMENTARY CEMENTITIOUS MATERIALS ................................ ................................ 655 SECTION 703 BASES AND MISCELLANEOUS AGGREGATES ................................ ................................ ....657 SECTION 705 SELECT BORROW ................................ ................................ ................................ ............ 668 SECTION 706 LIME ................................ ................................ ................................ ............................... 669 SECTION 707 THIN SURFACE COURSES ................................ ................................ ................................ .670 SECTION 708 PLANT MIX BITUMINOUS BASES AND SURFACES ................................ ............................. 676 SECTION 709 ELECTRICAL CONDUIT ................................ ................................ ................................ .....695 SECTION 710 DELINEATORS ................................ ................................ ................................ ................. 697 SECTION 711 TRAFFIC STRIPE ................................ ................................ ................................ .............. 700 SECTION 712 CONSTRUCTION FABRICS ................................ ................................ ................................ 710 SECTION 713 EROSION CONTROL STON E ................................ ................................ ............................. 716 SECTION 714 MASONRY BRICK ................................ ................................ ................................ ............ 719 SECTION 719 SIGNS ................................ ................................ ................................ ............................. 720 SECTION 720 OVERHEAD ALUMINUM TRUSS SIGN STRUCTURES ................................ .......................... 722 SECTION 721 GALVANIZED STEEL SIGN POSTS ................................ ................................ ...................... 725 SECTION 723 REINFORCING STEEL ................................ ................................ ................................ ....... 726 SECTION 724 STRUCTURAL STEEL ................................ ................................ ................................ ........ 727 SECTION 725 MISCELLANEOUS METALS ................................ ................................ ............................... 735 SECTION 726 DRAINAGE CONDUITS ................................ ................................ ................................ .....737 SECTION 730 PAINT FOR STRUCTURAL STEEL ................................ ................................ ....................... 741 SECTION 731 TIMBER PRESERVATIVES AND TREATMENT ................................ ................................ .....746 SECTION 732 MATERIALS FOR GUARD RAIL, GUIDE POSTS, BRIDGE RAIL, MISCELLANEOUS RAILING, AND FENCES ................................ ................................ ................................ ................................ ............ 747 SECTION 733 MISCELLANEOUS MATERIALS ................................ ................................ .......................... 757 SECTION 735 MATERIAL FOR ROADSIDE DEVELOPMENT AND EROSION CONTROL ............................... 766 614 SECTION 736 PAVEMENT MARKERS ................................ ................................ ................................ .... 776 SECTION 737 CONCRETE SURFACE FINISH FOR STRUCTURES ................................ ................................ 782 SECTION 738 ELECTRICAL CONDUCTORS ................................ ................................ ............................. 786 SECTION 739 PULL BOXES ................................ ................................ ................................ ................... 786 SECTION 740 TRAFFIC SIGNAL BACKPLATES ................................ ................................ ......................... 788 PORTLAND CEMENT CONCRETE 701.01 615 SECTION 701 PORTLAND CEMENT CONCRETE
701.01 Mix Design and Propo Rtioning
The Department requires that all portland cement concrete be air entrained. The Department will allow portland cement concrete produced using portland cements, blended hydraulic cements, and hydraulic cements.
A.Classes of Concrete If the Plans do not sh ow the concrete class, provide concrete in accordance with the following: Class AA. Use Class AA concrete in superstructures. Class A. Use Class A concrete for pavements and substructures (pier caps, columns, abutments, retaining walls, and reinforced con crete not requiring Class AA concrete). Class AP. Use Class AP concrete in shoulders, merge areas, and gore areas for portland cement concrete (PCC) pavements. Class C. Use Class C concrete for soil erosion control structures. Class P. Use Class P concr ete for precast prestressed concrete members. Table 701:1 specifies the requirements for each concrete class: Table 701:1 Concrete Classes Class of Concrete Minimum Cement Content, lb/yd³ [kg/m³] Air Content, % Water/Cement Ratioa, lb/lb [kg/kg] Slumpb, in [mm] Minimum 28-day Compressive Strengthc, psi [MPa] AA 564 [335] 6.5 ±1.5 0.25 – 0.44 2 ±1 [50 ±25] 4,000 [27.6] A 517 [307] 6 ±1.5 0.25 – 0.48 2 ±1 [50 ±25] 3,000 [20.7] AP 470 [279] 6 ±1.5 0.25 – 0.48 2 ±1 [50 ±25] 3,000 [20.7] C 395 [234] 6 ±1.5 0.25 – 0.62 3 ±1 [75 ±25] 2,400 [16.5] P 564 [335] 5 ±1.5 0.25 – 0.44 3 ±1 [75 ±25] As required by the Contract
Source: Oklahoma Standard Specifications for Highway Construction, 2019 Edition. Pages 622–628 of 935.