Case Study : Grantham Southern Relief Road

We have just published our latest Case Study – the use of one of our Delmag RH28 drilling rigs for the installation of foundation piles for wing walls and abutments in the latest phase of the Grantham Southern Relief Road, for our client BAM Ritchies.

This is part of a major highways upgrade taking place in Lincolnshire, routing traffic away from Grantham town centre and linking the A1M to the A52 (a high volume east-west route across the Midlands). The new road will greatly reduce congestion in the town and surrounding areas with all the benefits that this will bring – plus give potential for local employment, growth and expansion.

Our Delmag RH28 rig installed the contiguous bored piles, up to 12m in depth, required for the construction of the abutments and wing walls supporting the new A1M interchange. The heavy duty rig was required due to the ground conditions – boring through made ground and into the limestone rock below. Each pile was secured with a ‘rock socket’ to give additional stability and support against both vertical and lateral forces.

Along with our RH28 rig we also supplied a BT340 rotary head, and as can be seen from the pictures our rig was partially decked out in BAM’s distinctive livery.

Most of the work took place during the initial lockdown period of the Covid-19 outbreak, which obviously had repercussions on how the work was carried out. As this was a major infrastructure project it was permitted that work could continue so long as, but only if, stringent hygiene and distancing measures were adopted.

Click here to read the full case study.