Genco Construction Services Limited

Tesco Store – Southend‐on‐Sea, Essex

There was very severe dry rot infestation in the basement. The affected timbers and floor boards were very badly degraded and had lost most of their inherent strength.

The basement had little ventilation and appeared to have penetrating damp to the front/rear retaining walls. Water was also coming up through the floor and there was no damp proof or tanking membrane.

There had been a ducted ventilation system in the basement, but this had fallen into dis‐repair and had not been operating for many years.

Ultimately the result of the above was that the sales floor to become very uneven with undulations and causing the ceramic floor tiles to crack.

Scope
The affected timbers and boarding was removed and replaced with matching tanalised timbers.

The fungus treated with a suitable method and all areas of the basement.

The ventilation system to the basement was reinstated as the dry rot would re‐appear.

Due to the above scope of works the removal of the chiller cabinets was necessary, and in turn a full closure was required.

We were given a 7 Day Closure to complete the following works:

Clear basement of all rubbish and steel cage
Rip up tiles and latex
Rip up flooring/ply
Remove rotten joists
Re instate joists
lay new ply sub‐floor
Supply and fix new ceramic flooring
Supply, Install and commission new ventilation system

Tesco Store – Broadstairs, Kent

It was suspected that the existing drainage system to the area was faulty causing backups and flooding during period of heavy rain rendering the surrounding area as un-usable by the public.

Genco proposed and designed a new storm cell drainage system to cope with the heavy rain fall and still enable the surrounding areas to be used for pedestrian access.

Scope
Genco excavated to a depth of 6m exposing the existing faulty drainage system, confirming our original diagnosis.

Upon completion of the excavation, the old drainage was removed and the newly designed storm cell system was installed. This was then covered by a Terram Membrane and Polystyrene protection layer.

Once at the correct levels the area was backfilled and compacted ready to receive Type 1 fill materials. A pedestrian footpath was then laid out and constructed from fully compacted bitumen macadam.

All street lighting was then re-connected and commissioned and the whole area was seeded to grass.

Tesco Store – Burlesden Towers, Southampton

Thieves had gained access to the main roof area and had proceeded to remove the vertical and horizontal lead to the mansard roof and the main capping to the parapet wall at the front of the store.

The removal of the leadwork had caused the roof to leak onto the shop floor causing goods to spoil and dangerous underfoot conditions for the general public.

Scope
Genco initially visited the site to survey and make dry the roof with temporary protection. This enabled the store to keep trading and prevented any further damage to stock or the store.

It was decided to remove all of the traditional leadwork on the roof, as thieves had continually removed this over a period of time and replace it with a Modern Trocol system.

Upon removal of the lead it was discovered that the timber substrate was rotten and it had to be replaced with new plywood, to which a new Trocol System was fixed.

All of the works were completed on a live store and there was no loss of trading during the whole construction process.

Tesco Store – Gatwick Express

There was a persistent problem where the existing drainage under the sales floor kept backing up and flooding the sales floor area.

Ultimately the result of the above was that the sales floor to become un-safe for customers and staff and the infrastructure of the building began to deteriorate.

Any repair works had to be completed whilst the store was still live. There would be no closure and all works had to be completed out of trading hours and then made safe for the next day's trading.

Scope
Existing drainage runs had to be identified by CAT scanning and then demarked for excavation.

The demarked drainage runs were then saw cut to a depth of 500mm and the existing Terrazzo flooring was broken out.

Once the Terrazzo was removed, the concrete sub floor was hydraulically broken and removed to expose the redundant drainage, which was removed and disposed of.

New upgraded drainage was then installed and backfilled with ready mixed concrete which was then temporarily covered with plywood, to enable the concrete to set during the following days trading.

The following night new Terrazzo flooring was supplied and installed to match the existing floor, once set this was polished and finished.

Waitrose Distribution Centre – Maidstone, Kent

The site consists of 6 large warehouses and offices set in an area of over 600,000 square feet. The busy distribution centre ran 24/7, so logistics and planning of the works had to be carefully considered and organised.

Scope
To provide an enhanced security system at their distribution centre at Aylesford near Maidstone.

This included:
The installation of over 70 High Definition cameras covering all angles of the site, complete with the installation of 23 miles of fibre optic cable and associated control panels and wiring.

The fit out of a new purpose made Control Room, with new entry exit kiosks, and state of the art monitoring system.

The wiring to, the adjusting of, refitting and replacing of over 140 access and fire escape doors on the site.

The construction of a purpose made walkway from reception to Partner restaurant.

Tesco Express Store – St Margaret's, Twickenham

We where challenged to re-lay 2,246m² new vinyl flooring and carry out a re decoration to the staff toilets, to the in-store and back of house areas of the Tesco Express store in St Margaret's, Twickenham.

Scope
To carry out programmed works, including stripping out of damaged vinyl, where necessary initiating repairs to the timber sub flooring.