STANDARD SPECIFICATIONS
conditions of controlled temperature and humidity. Sections shall be water or steam cured until the concrete attains one hundred (100) percent of the specified strength. Concrete wheel stops shall be uniform in colour, free from cracks, flaws or other defe cts, have a clean finish with smooth surfaces and they shall have well defined arises. Segregation, honeycombing or broken corners will not be allowed and remedial measures will not be accepted. Adhesive for anchoring wheel stops to asphalt pavements shall be a non-shrink epoxy adhesive manufactured for the purpose and approved by the Engineer. Non-shrink epoxy resin grout for bonding the two anchor bars to the pavement and wheel stop, shall be of high strength, been used for similar applications in the United Arab Emirates and approved approved by the Engineer. Materials, sampling and testing shall be as described in these Standard Specifications or as directed by the Engineer. b.
Installation of of Precast Concrete Wheel Stops. Precast concrete concrete wheel wheel stops stops shall be installed where indicated on the Drawings or as directed by the Engineer. The contractor shall drill two holes per wheel stop of sufficient depth into the pavement. The holes shall have all foreign and loose material removed immediately prior to grout placement. The two galvanized anchor bars are to be firmly bonded to the wheel stop and to the pavement with non-shrink epoxy resin grout. The precast wheel stop shall be set in place with a non-shrink epoxy adhesive between the pavement and wheel stop, bearing at-grade on the pavement. Equipment used for drilling shall be as approved by the Engineer, prior to use. Drilling method shall not cause any damage to the pavement. The Contractor shall provide all labour, materials, plant and all incidentals for installing precast concrete wheel stops. The Contractor shall provide suitable protection against any damage or defacement of wheel stops and shall clean down the whole installation and adjacent area upon completion, to the satisfaction of the Engineer.
505.07
Painting of Kerbs, Noses, Kerb-cuts and Wheel Stops
a.
General. Kerbs, Kerbs, noses, kerb-cuts and wheel stops along main roads, roads, sector roads roads and parking areas shall be painted at the locations shown in the Drawings or as directed by the Engineer. The length of each paint band shall cover two precast kerbstones, or as directed by the Engineer.
b.
Areas adjacent adjacent to fire hydrants may need to be be painted solid with with red non-reflectorized non-reflectorized paint. Locations and length of kerbstones to be painted red are to be approved by the Civil Defense Department.
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All proposed parking adjacent to fire hydrants is to be submitted to the Civil Defense Department for review and approval. c.
Materials. Paint at kerbs shall comply with the following requirements: Kerbstone paint based on alkyd resin or a modified acrylic especially formulated for application in the UAE environment with high durability and excellent adhesion to concrete. The manufacturer’s technical representative shall provide all technical details of the proposed paint, and shall supervise the initial installation of material as directed by the Engineer. The minimum requirements for paint are given below:
505.08
Number of coats of paint: two minimum.
Total dry film thickness: 150µm minimum.
Adhesion ≥ 2 MPa.
Highly UV resistant against fading and peeling.
Measurement and Payment
a.
General. Measurement and payment for kerbs will be as described in and included in the Bills of Quantities. The work included under each Item for kerbs as included in the Bills of Quantities shall include all Works required to complete that Item as indicated on the Drawings, as specified herein and as directed by the Engineer.
b.
Concrete Foundation at Kerbs. Measurement and payment for the Item, Concrete Foundation at Kerbs, will be at the unit rate per cubic metre as included in the Bills of Quantities, which rate shall be considered full compensation for providing all labour, materials and equipment for the preparation, concrete work and other work required for the complete installation of cast-in-situ foundation, as detailed on the Drawings, as specified herein, and as directed by the Engineer. This Item includes all excavation and backfill to complete the cast-in-situ foundation.
c.
Concrete Haunching at Kerbs. Measurement and payment for the Item, Concrete Haunching at Kerbs, will be at the unit rate per cubic metre as included in the Bills of Quantities, which rate shall be considered as full compensation for providing all labour, materials and equipment for the preparation, concrete work and other work required for the complete installation of cast-in-situ haunching, as detailed on the Drawings, as specified herein, and as directed by the Engineer.
d.
Precast Concrete Kerbs. Measurement and payment for the Items, of Precast Concrete Kerbs (all types) will be at the unit rates per linear metre measured along the front face of the kerb at finished grade elevation for each respective type of kerb as included in
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the Bills of Quantities, which rate shall be considered as full compensation for providing all labour, materials, tools, equipment and incidental items for the preparation, mortar, precast concrete kerb units and other work required for the furnishing and installing of kerbs as detailed on the Drawings, as specified herein and as directed by t he Engineer. No separate payment will be made by the Department for formwork necessary to construct curved cast-in-situ portions of precast concrete kerbs, cement pointing joints, cement mortar bed and side joints. Such work shall be considered a subsidiary obligation to applicable precast kerb types. e.
Cast-In-Situ Concrete Kerbs and Kerb-cuts for Driveways and Pedestrian Ramps. Measurement and payment for the Items, Cast-In-Situ Concrete Kerbs and Kerb-cuts for Driveways and Pedestrian Ramps, will be at the unit rate per linear metre measured along the front face of kerb at finished grade elevation for each respective type of kerb as included in the Bills of Quantities, which rate shall be considered as full compensation for providing all labour, materials, tools, equipment and appurtenances for the preparation, concrete work and other work required for the complete installation of cast-in-situ kerbs as detailed on the Drawings, as specified herein and as directed by the Engineer.
f.
Cast-In-Situ Concrete Nose. No separate payment will be made for cast-in-situ concrete noses. Such work will be measured and paid under the associated item of precast kerbs.
g.
Precast Concrete Wheel Stops. Measurement and payment for the Item, Precast Concrete Wheel Stops, will be at the unit rate per number of wheel stops installed as included in the Bills of Quantities, which rate shall be considered as full compensation for providing all labour, materials, tools, equipment and incidental items for the preparation, reinforced precast concrete wheel stop units and other work required for the furnishing and installing of wheel stops and resin grouted anchor bolts as detailed on the Drawings, as specified herein and as directed by the Engineer.
h.
Painting of Kerbs, Noses, Kerb-cuts and Wheel Stops. No separate measurement and payment for the painting of Kerbs, Noses, Kerb-cuts and Wheel Stops will be made. Painting of Kerbs, Noses, Kerb-cuts and Wheel Stops will be considered as a subsidiary obligation to applicable items in the Bills of Quantities, which rate shall be considered as full compensation for providing all labour, materials, tools, equipment and incidental items for the preparation and painting of the kerbs and wheel stops as specified herein and as directed by the Engineer.
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