Section 614 Section 614 614-B: Concrete Driveway, With Reinforcement * - per square yard * Thickness may be specified SECTION 615 - CONCRETE BARRIER
615.01 Description . This work consists of furnishing all materials and constructing
concrete barrier in accordance with these spec ifications and the details shown on the plans and in reasonably close conformity with the dimensions, lines, grades, and elevations shown on the plans or established by the Engineer.
615.02 Materials . Materials used in this work sha ll be in accordance with the applicable
requirements of Section 700 or as shown on the plans. Unless otherwise specified, concrete for barrier , cast-in-place or slipform placement, shall be Class "B" meeting the requirements of Section 804. Concrete for precast barrier using the dry-ca st plant manufacturing process shall produce 5,000 psi compressive strength in 28 days. 615.03--Construction Requirements .
615.03.1 General . Cast-in-place barrier shall be constructed in accordance with the
requirements of Subsection 813.03.2.2 and applicable requirements of Section 804. Barrier constructed by slipform placement sh all be constructed in accordance with the requirements of Subsection 615.03.2 and applicable requirements of Section 804. Precast barrier shall be constructed in accordan ce with applicable requirements of Section 804 and the requirements of Subsection 813.03.2.3, except concrete material requirements will be as set forth in Subsection 615.02. Precast concrete barriers must meet the requirements of NCHRP Report 350 or MASH. Joints shall be as shown on the plans, and the surface finish shall be Class 2, rubbed or spray finish, in accordance with the re quirements of Subsection 804.03.19.3.
615.03.2 Slipform Placement . When concrete median barri er is placed by the slipform
method, the slipform machine shall be craw ler mounted for stability and shall include automatic sensing and control equipment for controlling line and grade. Continuation of placement by the slipform method shall be c ontingent upon quality workmanship and good configuration, lines and grades with very little hand finishing required. The Contractor shall be fully responsible for placement at no additional cost to the State, any and all barrier not conforming to the requirements of the cont ract. To improve placement characteristics, the State Materials Engineer may make minor modifications in the concrete mix design for this type of placement.
615.04 Method of Measurement . Concrete barrier of the type specified will be measured
by the linear foot out to out of the barrier. This measurement shall include all elements of the barrier and its foundation.
615.05 Basis of Payment. Concrete barrier, of the type specified, will be paid for at the
contract unit price per linear foot, complete-i n-place, which shall be full compensation for completing the work. Payment will be made under: 615-A: Concrete Description Barrier - per linear foot 615-B: Precast Concrete Description Barrier - per linear foot SECTION 616 - MEDIAN AND ISLAND PAVEMENT
616.01 Description . This work consists of constructing paved medians and islands on
prepared grades in accordance with these specifications and in reasonably close conformity with the lines, grades, and sections shown on th e plans or established. When so indicated on the plans, this work shall also consist of pa inting the surface, or portions thereof, of the median or island.
616.02 Materials .
616.02.1 Concrete. The materials used in the manufact ure of concrete shall conform to
the requirements of Section 804 for the class of concrete specified. Unless otherwise specified, Class "C" concrete shall be used.
616.02.2 Joint Filler . Joint filler shall be the type specified on the plans and shall
conform to the requirements of Section 707. Unless otherwise specified, the filler shall be ½-inch premolded filler meeting the requirements of Subsection 707.02.2.
616.02.3 Asphalt Pavement . Asphalt pavement shall be in accordance with the
applicable materials and construction re quirements of Sections 401 and 403.
616.03 Construction Requirements .
616.03.1 Equipment . The equipment shall conform to the applicable requirements of
Sections 401, 501, and 804, except that approved modified placement, shaping, compacting, and finishing equipment will be permitted. All small tools, such as edgers, floats, tamps, etc., shall be approved tools of such quality and quantity as to assure their adequacy in the performance of acceptable work. Approved required equipment shall be on the project in good working condition before construction will be permitted to start. 616.03.2--Preparation of Grade . Unless otherwise specified, in-grade preparation shall be performed in accordance with the appli cable provisions of Section 321. After completion of grade preparation, the entire ar ea shall be treated with a soil sterilant as follows:
a.Soil sterilant material shall be applied at the maximum rate recommended on the manufacturer's label for perennial weed control. Any granular or pelletized type soil sterilant that is approved by the Engineer may be used. The approved material shall be uniformly spread over the entir e area immediately prior to placing the pavement.
Source: Mississippi Standard Specifications for Road and Bridge Construction, 2017 Edition. Pages 448–448 of 1,113.