1 & 2 Cadogan Lane
Belgravia, London
SW1X 9EB

aleur associates rear extension loft conversion East London Redbridge Lane foundation plan drafting concrete steel footing
aleur associates rear extension loft conversion East London Redbridge Lane loft floor plan drafting steel floor beams timber joists
aleur associates rear extension loft conversion East London Redbridge Lane loft conversion roof plan roof-light rafters timber drafting dormer full width
aleur associates rear extension loft conversion East London Redbridge Lane foundation plan drafting concrete steel footing
aleur associates rear extension loft conversion East London Redbridge Lane loft conversion roof plan roof-light rafters timber drafting dormer full width

Mansard Loft Conversion
[Central London - Royal Borough of Kensington and Chelsea]

aleur associates rear extension loft conversion East London Redbridge Lane foundation plan drafting concrete steel footing
Our client, a design and build firm required the full structural design package to a large mansard loft conversion project; in the Royal Borough of Kensington and Chelsea. The mansard loft was to be open plan internally, with no internal columns or posts. aleur associates designed full-width steel cranked frames to follow the proposed roofline.

After an initial site visit and meeting with the various parties involved, the existing building was found to be of concrete construction. Thus the new loft floor was to utilise the existing concrete floor. aleur associates designed an economical scheme whereby a new layer of structural concrete [perimeter ring structure] was specified to avoid a completely new deck. This also enabled more headroom internally to the loft space.
aleur associates rear extension loft conversion East London Redbridge Lane foundation plan drafting concrete steel footing
aleur associates designed the full package with structural details and cross-sections. Full splice connection details were also designed to enable a practical installation onsite for the builders.
aleur associates southwark foundation plan box frame footings
aleur associates southwark ground floor plan downstands beam
aleur associates southwark web opening

Rear Extension with double-storey Side Extension 
Internal Alterations & Loft Conversion.
[South East London - London Borough of Southwark)

15 Janeway Street 
London
SE16 4PS

A semi-detached property development scheme with a full loft conversion proposal, rear extension with a double storey, side extension to roof level. Our client required efficient design to ensure the new steel structures were sympathetically specified to complement the existing down-stand beams in the ground floor ceiling. Thus retaining existing steels beams (RSJ's) to avoid further expense.

Loft floor and roof timber structures were designed as slender as possible, to ensure maximum headroom in the new loft space.
aleur associates southwark foundation plan box frame footings loft conversion
aleur associates southwark foundation plan box frame footings loft conversion
aleur associates southwark foundation plan box frame footings loft conversion gable roof

9 Redbridge Lane West Wanstead, London
E11 2JX

aleur associates rear extension loft conversion East London Redbridge Lane foundation plan drafting concrete steel footing
aleur associates rear extension loft conversion East London Redbridge Lane ground floor ceiling roof roof-lights timber plan drafting
aleur associates rear extension loft conversion East London Redbridge Lane roof plan roof-lights rafters timber plan drafting steel frame
aleur associates rear extension loft conversion East London Redbridge Lane loft floor plan drafting steel floor beams timber joists
aleur associates rear extension loft conversion East London Redbridge Lane loft conversion roof plan roof-light rafters timber drafting dormer full width

Rear Extension & Loft Conversion
[East London - London Borough of Waltham Forest]

Our client required a new spacious extension both to their back garden and roof, attic space.

From various initial schemes, we provided the final structural specification with vaulted ceilings to the rear extension. Internal space here was utilised with large roof-lights and minimal internal structure. 

The loft conversion scheme was designed with a new floor deck and a full-width, dormer structure. 
aleur associates internal opening steel beam with padstone and masonry pier either side

6 Charter House
Crown Court,
London WC2B 5EX

New Internal opening
[WestLondon flat - London Borough of Camden]

As flats become ever more popular amoungst young couples, larger spaces and opening plan living is a common proposal.

Our client required a new open plan living room, with clear access to the kitchen area. With efficient use of masonry piers either side, a new opening was achieved both complient with Building Regulations and to the freeholders consent requirements.

A letter of Confirmation is a common requirement amoungst freeholders. Thus a full structural design package was provided with a formal letter to compliment.
aleur associates rear extension East London Leytonstone Leybourne Road foundation concrete plan drafting pins sequence slab thickness
aleur associates rear extension East London Leytonstone Leybourne Road ground floor plan ceiling roof-lights steel beams frames connections cavity wall
aleur associates rear extension East London Leytonstone Leybourne Road connection detail steel connector bolts m16 steel beam to beam for construction section

Rear, side-infill Extension
[East London - London Borough of Waltham Forest]

37 Leybourne Road
Leytonstone, London
E11 3BS

A typical side infill extension and rear bay window were proposed with two large roof-light systems and the complete removal of the side elevation, masonry wall. 

The steel sections were specified slender and light, and the roof-light structure was designed entirely in timber. Full details provided for contractor on-site and steel fabricator off-site.

aleur associates rear extension East London Leytonstone Leybourne Road foundation concrete plan drafting pins sequence slab thickness
aleur associates rear extension East London Leytonstone Leybourne Road ground floor plan ceiling roof-lights steel beams frames connections cavity wall
aleur associates rear extension East London Leytonstone Leybourne Road ground floor plan ceiling roof-lights steel beams frames connections cavity wall
aleur associates rear extension East London Leytonstone Leybourne Road connection detail steel connector bolts m16 steel beam to beam for construction section

Rear and Side Extension
[South London - London Borough of Bexley]

3 Orchard Rise West
Sidcup, London 
DA15 8SY

A common rear extension scheme proposal in South London. The rear extension was proposed to almost double the clients living space at ground floor level. With three large roof-light systems and the complete removal of the existing outrigger.

The steel sections were specified slender and light, and the roof-light structure was designed entirely in timber without the need for flitch or steel beams. Full details provided for contractor on-site and steel fabricator off-site.

122 Chestnut Avenue
London
E7 0JJ

aleur associates rear and side extension East London Chestnut Avenue connection detail steel connector bolts m16 steel beam to beam for construction section

Rear & Side-infill Extension
[East London - London Borough of Newham]

aleur associates rear and side extension East London Chestnut Avenue steel strap connection detail masonry wall timber hanger
aleur associates rear and side extension East London Chestnut Avenue foundation plan proposed footing concrete slab thickness mesh column baseplate
aleur associates rear and side extension East London Chestnut Avenue proposed ground floor plan ceiling steel frames columns posts cavity walls beams lintels
A new open plan, rear extension with full-length roof-light to the side infill. The client required a spacious and airy extension with large rear openings into the garden and minimal internal structure. 

A particular feature to note here is the double column used either side of the kitchen island to enable efficiency in structural steel as depths are reduced and spans are shortened. A similar approach has been utilised the rear openings with a central steel column. Such compromise and efficient use of steel elements has allowed for an extension that is both ergonomic and economical.
aleur associates rear and side extension North West London Burrard Road proposed foundation plan concrete footing trench fill grade c35 slab thickness pad footing garden wall mesh
aleur associates rear and side extension North West London Burrard Road proposed ground floor plan ceiling level steel beams frames roof-lights timber trimmers masonry wall cavity columns posts steel chimney breast support

34 Burrard Road London
NW6 1DD

Rear & Side-infill Extension with Chimney Breast removal
[North London - London Borough of Camden]

A very common extension scheme in London. Side infill extension with a large roof-light to ensure internal living space is light and spacious. Chimney breast also removed with large rear folding doors.

Steel and timber utilised to keep space open with minimal. Full details provided.
aleur associates rear and side extension North West London Burrard Road steel connection column to beam plate m16 bolts resin anchor concrete
aleur associates rear and side extension North West London Burrard Road trench fill foundation concrete slab thickness mesh cavity wall concentric foundation section
aleur associates rear and side extension North West London Burrard Road section steel connection bolts m16 steel plate cleat connection beam to beam
aleur associates loft conversion East London Limewood Close proposed first floor plan ceiling roof rafters roof-lights
aleur associates loft conversion East London Limewood Close proposed first floor plan loft floor steel beams timber joists trimmers staircase

3 Limewood Close
Walthamstow, London
E17 6QD

Loft Conversion 
[East London - London Borough of Waltham Forest]

Full loft conversion to a property built recently in the 1960s. The client required a clear and open space with no structure imposing on the proposed living space. Large span beams with floor beams to ensure the structure is independent of the existing internal structure below.

The existing roof was also retained also to ensure the design is the most economical design.