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ODOT Structure Project Manager Seminar Specifications

ODOT Structure Project Manager Seminar Specifications

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ODOT Structure Project Manager Seminar Specifications

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  1. ODOT Structure Project Manager SeminarSpecifications

  2. Division of Construction Management • Responsible to develop, maintain implement construction and material specifications • Five specification committees • Pavement • Structures • Earthwork and Hydraulics • Contract Administration • Traffic

  3. Specification Committee • For more information on the working of the committee go to:

  4. Session Outline Order of Precedence • Addenda • Proposal Notes and Special Provisions • Plans and Notes • Supplemental Specifications • Standard Construction Drawings • Standard Specifications, CMS Pay Items Standard, As per plan, Item Special Estimated Quantities

  5. Construction and Material Specification (CMS) • Directs the Contractor on the methods to perform work as outlined in the project plans. Furnishing of labor, materials, equipment, and transportation to perform work.

  6. 2002 CMS • 2005 available in May 2005, at Office of Contracts

  7. 500 Structures Example CMS Items • Item 507 Bearing Piles • Item 511 Concrete for Structures • Item 513 Structural Steel • Item 515 Prestressed Concrete Bridge Members • Item 610 Cellular Retaining Walls

  8. Pay Item Inclusion Common question with regards to CMS pay items: “What is included with pay items for payment?” For example 14” Cast-in-place, Reinforced Concrete Piles has Item 509 Reinforcing Steel, Item 511Concrete and structural steel for the shell components. Answer: All material and labor identified in the “Materials” section and/or as explained in the ‘Basis of Payment” section within the CMS Item.

  9. Standard Drawings Bridge Drawings • Standard drawings indicate repetitive details such as parapet, deck joints, precast concrete sections, etc. • Standard Drawings should be referenced on the Title Sheet and General Notes. • Reference to standard bridge drawings should be made by stating the Drawing Number and latest date of revision, or the approval date if there has been no revision. • If a Standard Drawing is modified by a plan detail or note then the corresponding pay item shall be “as per plan”

  10. Standard Drawings Bridge Drawings • If reference is made to a standard drawing, details shown on the standard drawing generally should not be duplicated in the project plans. • The designer shall be familiar with the standards and know if they are adequate for the particular design situation being addressed. • A standard drawing should not be referenced if only one or two small details on the standard are applicable. Details should be copied on the project plans. • Standard Drawings can be downloaded off the Office of Structural Engineering’s web page

  11. Supplemental Specifications • Supplemental Specifications are specifications that have been developed by the department and have a history of successful use. • In some instances with the department’s approval Supplemental Specifications may be modified. The pay item would then be “as per plan”. • Supplemental Specifications are located on ODOT’s web site under Design Reference Resource Center

  12. Structure Supplemental Specifications Examples • Patching Concrete Structures with Trowelable Mortar • Bridge Deck Repair and Overlay with Concrete Using Scarification and ChippingDifferent types of overlays have been combined into same spec. • Bridge Deck Repair and Overlay with Concrete Using Hydrodemolition

  13. New Structure Supplemental Specifications • QC/QA Concrete for Structures  • High Performance Concrete for New Bridge Decks with Warranty • Class S and QC/QA also have warranty specs • The life of the warranty was recently modified from 7 years to 2 years.

  14. Specifications Under Development • Field Metalizing of Structural Steel (Under Development)

  15. Plan Notes • Sample plan notes are provided in the BDM Section 600 and 700. • Any note that alters or modifies the intent of the CMS pay item shall have an “as per plan”designation. • When in doubt use as per plan to be on safe side

  16. Plan Insert Sheets • Plan insert sheets are similar to Standard drawings but must be included in the plans. They often cover a standard item in the developmental stage or require project specific information to complete design. Abutment Joint for Box Beams Noise Barrier Details Polymer Modified Asphalt Exp. Joint

  17. Design Data Sheets • Design Data Sheets have been developed to assist the plan development of repetitive design items. Examples include: • Bridge Rail Post Details • Portable Concrete Barrier Installation Guide • Prestress Concrete Box Beam

  18. Proposal Notes • Proposal notes are similar to Supplemental Specifications. • Proposal Notes were developed to assure uniform specifications for specific items that are either experimental or of an interim status. • Proposal Notes are not to be revised by the designer. • Proposal Notes override all other requirements in the plans, CMS, supplemental specs and Standard Drawings (only exception is addendum)

  19. Proposal Notes • Proposal Notes can also be obtained at the Design Reference Resource Center from the ODOT website. • Proposal Notes are referenced on the bridge plan by adding a note to the end of the applicable bid item (See Proposal Note). • Do not refer to Proposal Notes by number.

  20. Proposal Note Examples • VALUE ENGINEERING CHANGE PROPOSAL • HEAT STRAIGHTENING OF DAMAGED STRUCTURAL STEEL • STEEL PRICE ADJUSTMENT Acknowledges fluctuations in the cost of manufactured steel Provides for a pay adjustment for structural steel, piling, casing, steel deck joints, railing & bearings, reinforcing steel and prestress/post-tension strands Temporary note for volatile spikes in material cost

  21. Special Provisions • Special Provisions are notes and/or specifications developed for a project. • Typically have a significant number of pages so are not included in the plans. • Special Provisions that are not included in plans shall have their title and date listed on Title Sheet. • Contents submitted in the Final Plan Package to ODOT. • The BDM Appendix has several Special Provisions such as MSE walls, pot bearings listed. ODOT should be contacted for latest versions.

  22. Standard Pay Items • Standard pay item is one whose requirements are defined by a Standard Drawing, CMS or Supplemental Specification.

  23. “As per Plan” Pay Items • When a CMS, Standard Drawing or Supplemental Specification item has been modified an “As Per Plan” pay item is required. • The “as per plan” item must have a corresponding plan note or plan detail which clearly defines the deviation from the standard item. • In the Estimated Quantities the last column shall reference the deviation with the plan sheet in which the modification is explained.

  24. Item Specials • Typically created by means of a proposal note or special provisions. • Exceptions include vandal protection fencing and steel drip strips.

  25. Misc. Pay Items Misc.: pay items (catch all) • Pay item that does not fit the standard pay item extension descriptions and has no basis for new item extension number (rare item) • Post-tensioning would be a Misc. pay item • Misc. pay items require supplemental description • Example - Item 517 Railing Misc.: Hand Railing CMS 517 covers the construction and material requirements for this item. • Example - Item Special 530 - Structure Misc.: Field Testing of Lift Span There are no CMS items to cover the construction and material requirements for this item. All 530 items are “Item Special”.

  26. Estimated Quantities • In order to assist Construction, a copy of the quantity calculations shall be furnished (Step 11) with Stage 3 submittal. • Quantity calculations shall be accurate and complete and prepared neatly on standard computation sheets. • Independent calculations performed by designer and checker to minimize risk of error. • Plan quantities shall be listed separately for each bridge structure • Stage Construction