Platform 1 PTI Works
POS Services were selected to carry out an Intrusive Survey on at Chesham Platform on the Metropolitan Line.
The Intrusive Survey was carried out in order to determine the thickness of the platform wall after lifting the nosing stones. The Survey included the condition behind the platform wall as well as the presence of any support to the nosing stones.
In order to gather the required information, the Survey required removing 3 nosing stones at agreed locations on the platform. Pull testing to 6KN was also carried out on 4 anchors at agreed locations on the platform.