Division of Construction Management • Responsible to develop, maintain implement construction and material specifications • Five specification committees • Pavement • Structures • Earthwork and Hydraulics • Contract Administration • Traffic
Specification Committee • For more information on the working of the committee go to: http://www.dot.state.oh.us/construction/OCA/Specs/default.htm
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
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.
2002 CMS • 2005 available in May 2005, at Office of Contracts
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
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.
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”
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
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
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
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.
Specifications Under Development • Field Metalizing of Structural Steel (Under Development)
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
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
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
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)
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.
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
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.
Standard Pay Items • Standard pay item is one whose requirements are defined by a Standard Drawing, CMS or Supplemental Specification.
“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.
Item Specials • Typically created by means of a proposal note or special provisions. • Exceptions include vandal protection fencing and steel drip strips.
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”.
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