9 Queen Street, London
Engel has been appointed to carry out all the structural works to this prestigious development in Mayfair where logistics is one of the major obstacles to overcome. Our work consists of demolishing the rear of the existing building from the top down, while inserting the new structural steel beams and timber doors. The perimeter of the building is underpinned to allow a double basement to be formed. A concrete structure is formed inside the underpins forming the RC wall along with columns, shear walls and suspended floors.
31A The Park
Client— Laxcon Construction
The project consisted of 4 new residential houses. Engel was appointed to carry out the shell and core package. The works consisted of new strip foundations, beam and block ground floor, the upper floors were constructed using steel frame clad in block work and face brickwork with levels 1 and 2 being formed from pre-cast planks.
18 Brompton Square, London
Client— Bilton Ward Developments Ltd
Engel has been appointed to carry out all the structural works to 18 Brompton Square. Our work consists of demolishing the rear of the existing building from the top down, while inserting the new structural steel beams and timber floors. The perimeter of the building is underpinned along with piled to allow a basement to be formed. A concrete structure is formed inside the underpins forming the RC wall along with columns, shear walls and suspended floors.
This development was to create a retro basement door level under the entire house floor area including the rear garden area. Both RC and mass concrete underpins; 4.5m deep were installed around the perimeter walls and internal walls in agreed sequence. The vault under the main road was also RC underpinned with 1.4m deep pins. Ground stabilization was applied around the external wall perimeter because of the ground condition. Temporary props we installed prior to bulk excavation for the new basement slab. 10nos bored CFA piles were also installed to provide foundation for new columns in the structure. New steel structure was installed, and new basement, lower ground and ground floor slabs were constructed.
Selwyn House, London
The project consisted of refurbishing the existing house and forming a new basement under the existing house and to the rear of the property. The works was split into the two areas namely the garage and main house areas. The garage area had 2-stage 7m deep RC underpins around the perimeter walls and 25no. bored CFA piles were installed as foundation for the new basement and sub-basement slabs. The water table in this area was lowered by de-watering method during the 2nd stage underpinning. Temporary works were installed prior to the bulk excavation of the new basement. New drainage system was installed, and the new slabs constructed. The main house’s existing lower ground floor area was also lowered to increase the depth in some areas and new basement floor constructed in other areas of ground door. RC Underpins 2.5m deep were constructed around the perimeter walls and some internal walls in agreed sequence. Temporary props were installed and bulk excavation for the new basement slab construction was carried out. The new slabs were constructed, and some ground floor slabs reinstated.
80 Backchurch Lane, London
Client— Cruxden Developments Ltd
Engel was appointed to carry out the demolition works and substructure works to form the new 5 storey RC structure. The works involved demolition of the existing 3 storey structure, grubbing out the existing foundations, installing the piling matt, providing attendance to the pilers who installed piles for the contiguous wall and load bearing piles, capping beam and excavation to formation level.