Tesco Store Section 278 Alternations – Kent South East

Client: RG Carter Duration: 5 Weeks Value: £75k - £125k

SB Civil Engineering secured these Section 278 works from contractor R G Carter. We were scheduled to carry out kerbs & paving works, drainage and street lighting.

The Section 278 works consisted mainly of remedial works to the supermarket. Site clearance and excavation of the exiting asphalt, kerbs and blister paving was carried out by hand. The surface was saw cut using a petrol disc cutter and broken out using a hand arm compliant pneumatic breaker. All such highways areas had a permit to dig issued and the areas were scanned by a competent/ trained operative using a CAT (Cable Avoidance Tool). The 400mm x 400mm blister paving for the hihway crossing points were laid to line and level on a bed of ST2 concrete behind the new radius HB2 kerbs. The blister paving lined up with the highway  crossing point on the other side of the road. On completion of the kerbing work and blister paving installation elements of the section 278 works, the specified asphalt was transported to site on tipping lorries and loaded onto wheel barrows for the hand lay process of asphalting the highway. Tac Coat was applied to all highway surfaces receiving new asphalt.

The area identified within the section 278 highways scope of works as requiring ACO drainage channel “Store Exit Junction” had the existing highway asphalt saw cut using a petrol disc cutter. On completion of all excavation to the correct depth the ACO drainage channels were laid to the correct line and level on a bed of ST2 concrete and haunched and the heel guard grating installed. An ACO sump unit was then installed on the end of the run ready to receive the outlet pipe. The route for the outlet pipe connection into an existing gully was  marked on the ground using chalk. A 100mm diameter OSMA drainage pipe was laid to the correct line and level on a bed of ST2 concrete with concrete surround and connected into the existing highway gully.

The trench was backfilled with MOT Type 1 and compacted in 150mm layers using a trench foot compactor. On completion of backfilling the modular reinstatement section of the S278 works commenced. All block pavers were laid on a 30mm sand bed. On completion of the block paving kiln dried sand was swept into the voids and the paving blocks received two passes of a compactor plate. The surface was swept clean prior to opening to traffic and having the section 278 works signed off by the client.