Waterproofing of the retaining wall for The Sill youth hostel. The project included lift pits, basement slab and walls that would be the shop and suspended roof slabs. These were stepped over three levels across the entire building also required.
A long term stand-alone waterproofing solution was required for the inclement climate, whilst also avoiding loss of construction time.
The project included waterproofing for below ground structures and the suspended slabs that made up the feature roof. One part of this would be the viewing platform overlooking the iconic Hadrian’s Wall.
Concrete placement for the suspended slabs was challenging. This was due to the design which sloped across two planes at the same time.
Xypex provided a cost-effective solution, simpifying the construction process whilst ensuring the waterproofing installation did not cause any construction delays.
The retaining wall to the youth hostel, lift pits and in situ basement walls all used Xypex Admix. Placement was required prior to the basement slab across these areas.
Xypex Admix was also used in the suspended roof decks. This comprised in situ concrete and 150mm thick Xypex concrete on top of suspended steel decking.
Xypex Admix C Series -Retaining wall, lift pits, basement slab, basement walls, in situ suspended roof slab, 150mm structural topping on suspended steel decking.
Xypex Concentrate – All joints
Hydroswell Bentostrip – Either / or used at all joints
Hydroswell sealant – Either / or used at all joints
Xypex technology means the product remains potentially permanently active for the life of the structure. This meant all 1,060m3 of concrete, including the suspended decks, could be designed to a 0.3mm crack width and still be covered under the required 25 year warranty.
Xypex also ensured that the waterproofing caused no additional delays despite poor weather conditions.
DOWNLOADSCASE STUDY - THE SILL
BASEMENTS & SUB-STRUCTURES
Haydon Bridge, Northumberland