615Cattle Guards

Cattle Guards

615.1DESCRIPTION

1 This section describes the requirements for constructing and resetting cattle guards and replacing cattle guard grill units.

615.2MATERIALS

1 Provide materials in accordance with the following: Material Subsection Admixtures 801.4 Aggregate for Concrete 803 Bolts, Nuts and Washers 815.6 Curing Materials 802.1 Fence Posts 812.8 Fly Ash 801.2 Galvanized Coating 815.14 Joint Materials 807 Metal Delineator Posts 816.5 Paint 809 Portland Cement 801.1 Prefabricated Cattle Guard Units 812.6.1 Reinforcing Steel 811.1 Structural Steel 815.1 Water 814.1 Welded Grill Cattle Guard Units 812.6.2

615.3EQUIPMENT

1 Ensure that equipment meets the following: Equipment Subsection Batch Plant 513.3.1 Mixers 513.3.2 Placing Equipment 513.3.3

615.4CONSTRUCTION

615.

4.1General

1 Ensure that plants providing precast concrete foundations are certified in accordance with Subsection 502.4.1, Plant Certification.

Cattle Guards SECTION 615 2 Use galvanized bolts, fasteners, and associated hardware. Connect existing fences to new and reset cattle guards. 3 The department specifies minimum outside dimensions of cattle guard grill units. At no additional cost to the department, and with proper adjustments to the foundation dimensions, units with dimensions up to 6 in [150 mm] larger than the specified minimum may be provided. 615.

4.2Excavation

1 Excavate in accordance with Section 212, Structure Excavation and Backfill. Provide enough space for the proper installation of forms or precast sections. When specified, excavate the area under the unit to provide drainage through the end of the foundation opposite the gate. 2 When installing on new embankment, bring the fill to grade in accordance with Subsection 203.4.3, Embankment and Cut Areas with Moisture and Density Control, then excavate for the foundation unit. 615.

4.3Foundations

1 Use precast or cast- in-place foundations made with class B concrete or better, in accordance with Subsection 513.4.4, Mix Design. Form, mix, and place concrete in accordance with applicable sections of Subsection 513.4, Construction. Give exposed concrete an ordinary finish. 2 Construct foundations to match the roadway cross-slope. If necessary, and with the engineer’s approval, adjust the elevation of the end support seats and backwall. For a crowned roadway with an odd number of grill units specified, place the center grill level and slope outside units to match the roadway. Adjust foundation units accordingly. 3 Provide and place reinforcing steel in accordance with Section 514, Reinforcing Steel. Extend steel into the lateral supports when cast-in-place. 4 Place adjacent backfill in 8- inch [200-mm] layers and compact in accordance with Subsection 212.4.7, Backfill. 615.

4.4Grill Units and Wings

1 Fabricate grill units and wings in accordance with Subsection 501.4.1, Fabrication, with the exception that they may be fabricated at the site. The department does not require shop inspection or drawings. 2 Clean and paint grill units, wings and miscellaneous hardware in accordance with the applicable portions of Subsection 501.4.1.24, Painting, or Subsection 501.4.2.8, Field

Cattle Guards SECTION 615 Painting. Required coats may be applied in the shop or field. Use brown for the final coat. 3 Install grill units and wings as specified. Leave no more than ⅜ in [10 mm] of vertical distortion between the grill unit and a plane parallel to the foundation surface. Fabricate and install cattle guard swing-wings as specified. 615.

4.5Resetting and Replacing Cattle Guards

1 When specified for resetting, dismantle and reset existing cattle guards. Provide new hardware for connectors as required. Replace or repair portions damaged during removal. 2 When specified, replace grill units by removing and replacing with a new unit of the same size and type. Modify foundations as required. 615.

4.6Delineation

1 Use type IV delineators to mark cattle guard corners. For two-way traffic, install delineators on all four corners. An approach is considered a two-way traffic condition. For one-way traffic, install two delineators on the side of on-coming traffic.

615.5MEASUREMENT and PAYMENT

615.

5.1General

1 The engineer will measure Cattle Guard (Heavy Duty) ___ ft [m], Cattle Guard (Medium Duty) ___ ft [m], Reset Cattle Guard, Reset Cattle Guard (Heavy Duty) ___ ft [m], Replace Cattle Guard Grill (Heavy Duty) ft [m], Reset Cattle Guard (Medium Duty) ___ ft [m], Replace Cattle Guard Grill (Medium Duty) ___ ft [m], and Cattle Guard Swing-Wing by the each as a complete unit. 2 The department will pay as follows: Pay Item Pay Unit Measure to the Nearest Pay to the Nearest Cattle Guard (Heavy Duty) ft [ m] EA [Ea] EA [Ea] EA [Ea] Cattle Guard (Medium Duty) ft [ m] EA [Ea] EA [Ea] EA [Ea] Cattle Guard Swing-Wing EA [Ea] EA [Ea] EA [Ea] Replace Cattle Guard Grill (Heavy Duty) ft [m] EA [Ea] EA [Ea] EA [Ea]

Cattle Guards SECTION 615 Pay Item Pay Unit Measure to the Nearest Pay to the Nearest Replace Cattle Guard Grill (Medium Duty) ft [m] EA [Ea] EA [Ea] EA [Ea] Reset Cattle Guard EA [Ea] EA [Ea] EA [Ea] Reset Cattle Guard (Heavy Duty) ft [m] EA [Ea] EA [Ea] EA [Ea] Reset Cattle Guard (Medium Duty) ft [m] EA [Ea] EA [Ea] EA [Ea] 615.

5.2Referenced Sections for Direct Payment

1 When specified, the engineer will measure and pay for cattle guard removal in accordance with Section 202, Removal; however, when reset is specified, removal will be incidental to resetting.