PBA has been engaged in the assessment and reconstruction of a section of historical quay wall in Millbay, Plymouth.
The wall dates back over 100 years but collapsed in 2016. The HCA commissioned PBA to provide ground investigation, structural designs, ecology assessments and marine licensing, followed by construction project management. We developed a reconstruction design based on a mass concrete gravity wall with a decorative stone cladding finish to match surrounding sections of wall. Our designs were based around the constraints posed by working in the tidal environment within a busy marina and close to the sensitive ecological receptors presented by Plymouth Sound.
The works were successfully delivered over a three-month construction programme, initially working with divers to clear and prepare the formation surface, followed by intertidal works over the lower sections of the wall before a dry working environment was established at the top of the wall. The project included installation of replacement marina pontoons and associated guiderails, whilst working closely with the marina operator to ensure the replacement facilities met with the requirements and expectations of the berth-holders.
PBA provided project management and contract administration throughout the works to deliver the project on budget and on time to meet the deadline presented by busy months of summer sailing.