(adapted from an email from Trams to Newhaven: view the original at https://mailchi.mp/7f4d38afd7a4/trams-to-newhaven-update-february-2019-final-business-case-233657)
Ground and Site Investigation Works update
Ground and site investigation works along the route are now in the final stages, with the last of the scheduled works due to complete in week commencing 22 July 2019.
The essential pre-enabling works, being carried out by the tram project’s Systems and Infrastructure contractor Sacyr, Farrans, Neopul (SFN), involves SFN carrying out detailed ground investigation surveys at 25 sites on the route. The work is being carried out in sections of approximately 100 metres at a time and under localised lane closures.
The purpose of ground investigation works is to determine the ground conditions along the route so that the project’s final design can be confirmed. SFN have been checking, among other things, the depth of the bedrock. This will allow us to better understand how deep tram infrastructure foundations need to be, as well as the dimensions of the ‘track slab’, which will be laid beneath the tram tracks.