R 4-20-98

CONSTRUCTION ZONE ENERGY ABSORBING TERMINAL

    DESCRIPTION. This work shall consist of furnishing, assembling as required, and installing the construction zone energy absorbing terminal in accordance with the manufacturer's recommendations and section 105.03.

    MATERIALS. The construction zone energy absorbing terminal shall consist of either the Advanced Dynamic Impact Extension Module, hereinafter referred as energy absorbing terminal type A, as manufactured by Syro, Inc.; or the Guard Rail Energy Absorbing Terminal cz, or Quadguard System hereinafter referred to as an energy absorbing terminal type B cz, both as manufactured by Energy Absorption Systems, Inc. The configuration of the terminal shall be as crash tested and approved in accordance with FHWA requirements.

        (a) ENERGY ABSORBING TERMINAL TYPE A, cz. The terminal base carrier beam shall be anchored to either the earth, asphalt pavement, or concrete pavement. There shall be a positive connection of the base to the object which the terminal is protecting. The lightweight crushable modules shall consist of varying strength perlite. The modules shall be designed to slide into the base. Modules shall be coated with sealant by the manufacturer to guard against the elements. Upon delivery to the project site, the coated modules shall be accompanied by 4 L (1 gal.) of the module sealant.

        (b) ENERGY ABSORBING TERMINAL TYPE B, cz. Installation shall be in accordance with the manufacturer's recommendations. When required for bi-directional traffic protection, transition panels and all other necessary hardware shall be included in the installation. The unit's nose cover shall be reflectorized as shown on the plans. The length of the unit shall be based on the number of bays shown on the plans for each given location.

    CONSTRUCTION REQUIREMENTS. Assembly and installation shall be supervised or performed at all times by an installer trained and certified by the unit's manufacturer, and shall be in accordance with the manufacturer's recommendations at the locations shown on the plans. A copy of the installer's certificate shall be provided to the Engineer prior to the start of work.

    The Contractor shall provide the Department with original copies of all necessary current manufacturer's installation manuals and shop drawings prior to beginning installation work. Shop drawings shall be a minimum of 560 mm by 865 mm (22 in. by 34 in.) in size. No installation work shall begin prior to the Department's receipt of such manuals and drawings. Such manuals and drawings will remain the property of the Department. If there is a discrepancy between shop drawings and the plans, the shop drawings shall govern.

    Ten energy absorbing terminal type A modules and a concrete support foundation, or one assembled standby energy absorbing terminal type B cz shall be stored as directed in a safe, convenient, nearby location. Such standby materials are not shown in the Schedule of Pay Items. If an originally placed type A unit is damaged, the standby materials shall be used as required. If an originally placed type B unit is damaged and is determined to be repairable, the standby materials shall not be used in lieu of the required repairs, unless otherwise directed. If portions of a standby unit are used to repair a damaged unit, like portions shall be reincorporated into the standby unit within 24 h of their use.

    METHOD OF MEASUREMENT. This work will be measured by the number of terminals placed.

    BASIS OF PAYMENT. This work will be paid for at the contract unit price per each for energy absorbing terminal, cz. If the energy absorbing terminal type B is used, payment will be made per each without regard to the number of bays shown on the plans. Each unit will be paid for only once regardless of how many times it is moved. The standby unit will be paid for only if its use is directed for complete replacement of a damaged installation.

    Payment will be made under:

        Pay Item                       Pay Unit Symbol

        Energy Absorbing Terminal,............ CZ EACH

    The costs of all materials, equipment, labor, and incidentals necessary to install, maintain, repair if necessary, and remove the unit shall be included in the cost of this work. The cost of stockpiling standby terminal materials which are not used, and portions of standby terminals which are used to repair damaged units shall also be included in the cost of this work. All units shall remain the property of the Contractor upon completion of the contract.

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