TITLE TEXT HERE 42 Shoe Lane Following on from the successful demolition package, Erith was awarded the follow-on Phase 3 Advanced Works Package. In summary, the works consisted of the demolition and asbestos removal of a further level of the BT shaft. In order to facilitate the existing basement slab breakout, extensive enabling and temporary works were required to undertake a reduced level formation of -2.4m. To carry out these works, Erith were required to undertake the following scope: • Investigation works and structural surveys. • Site hoarding • Maintain/access protection to BT assets • Installation of props and stitch drill pile trench • Break out pile trench, probing and backfilling works • Installation of a piling mat • Construction of a guide wall • Installation of secant/bearing/temporary works piles, plunge columns and flying shores • Formation of capping beam • Fabrication of temporary works • Demolition of basement slab • Excavation to formation levels The structure’s boundary presented the possibility of ancient monuments, including a concrete-encased tomb on the west side of Plumtree Court. As a result, Erith’s services incorporated an archaeological watching brief which took place in two sections of the site believed to have the survival of archaeological remains. Erith undertook extensive works to/around the existing BT lift shaft. The shaft was demolished down to a height above the formation level of the B2 slab. The shaft contained asbestos which required methodical and diligent removal. To facilitate this, Erith constructed a double-boarded steel deck allowing access for subsequent strip-out and deplant works - this enabled the erection of a scaffold enclosure. The BT shafts ring sections were then detached from the structure below. The asbestos was then removed at the work face, allowing the ring sections to be lifted up to site level for further asbestos stripping. Erith ensured that protection to the BT Tunnel was maintained throughout the course of the works, in particular where excavation works were undertaken in close proximity. In light of this approach, Erith installed a traffic light tracking system that would generate notifications via email and text notifying all staff that works surrounding the BT tunnel were exceeding the baseline vibration levels. To expedite the construction of the secant pile wall and to separate the BT tunnel from the slab, 210 linear metres of stitch drilled trench was undertaken. The existing raft slab varied in depth from 1.4m deep to 5m deep and up to 30 drilling/rig teams were dispatched around the site. The trench was then dug to a minimum width of 1400mm. This was completed in a hit and miss fashion preserving the integrity of the existing retaining wall at all times. Stage 1 propping to the retaining wall was then moved to enable access for the rigs. Once cores were completed, an excavator with breaking attachments was utilised to break out the existing slab. The trench was then backfilled with 6f2 ready for piling. Basement Demolition and Reconstruction Location: Farringdon Street, London EC4