618Precast Reinforced Concrete Stock Passes

Precast Reinforced Concrete Stock Passes

618.1DESCRIPTION

1 This section describes the requirements for constructing precast reinforced concrete stock passes.

618.2MATERIALS

1 Provide materials in accordance with the following: Material Subsection Admixtures 801.4 Aggregate for Concrete 803 Bolts and Fasteners 815.6 Portland Cement 801.1 Curing Materials 802.1 Fly Ash 801.2 Galvanized Coating 815.14 Reinforced Concrete Stock Passes 808.2 Reinforcing Steel 811.1 Water 814.1

618.3EQUIPMENT—V acant

618.4CONSTRUCTION

1 Provide precast reinforced concrete stock pass sections from plants certified in accordance with Subsection 502.4.1, Plant Certification. The department will not accept dry- cast precast members. Provide sections that vary from specifications no more than:

cent for internal dimensions;

n [6 mm] for haunch dimensions;

cent less for slab and wall thicknesses; and

9 mm] for lengths of two opposite surfaces of the box section, except where bevel ends are specified. 2 Before shipping, shop-assemble at least three sections to verify that joint fit meets the requirements specified for final assembly. 3 Excavate for stock passes in accordance with Subsection 206.4.1.1, Culvert

Precast Reinforced Concrete Stock Passes SECTION 618 Excavation. Shape and uniformly compact the trench bottom to support the length and width of the stock pass and flared end sections at the established line and grade. 4 Install stock pass and end sections with joints tightly closed. When specified, use galvanized tie bolts and fasteners to join flared end sections to end culvert sections. 5 When assembled in their final positions, do not allow a gap between sections or a misalignment of walls, top slabs, and bottom slabs greater than ½ in [12 mm] for more than 6 in [150 mm] at one location or 12 in [300 mm] total for multiple locations. Measure misalignment perpendicular to slabs and walls. 6 Backfill the stock pass in accordance with Subsection 206.4.5, Backfilling.

618.5MEASUREMENT and PAYMENT

1 The engineer will measure:

Stock Pass ___× ___ in [mm] by the foot [meter] along the invert centerline, not including flared end sections. The measured length will not exceed the length staked.

Stock Pass FE Sect ___× ___ in [mm] by the each installed, per end, regardless of the number of sections required to complete a flared end assembly. 2 The department will pay as follows: Pay Item Pay Unit Measure to the Nearest Pay to the Nearest RC Stock Pass × i n [mm] FT [m] 0.1 ft [0.05 m] FT [0.5 m] RC Stock Pass FE Sect × i n [mm] EA [Ea] EA [Ea] EA [Ea]