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Close-up of bolted joints on a primed beam and column frame

SSD—CRecent contracts

Recent steelwork detailing contracts.

We draw on a sub-let basis for regular and new clients across the construction industry — homes, hospices, sports halls, offices and the temporary works that make them possible.

SSD—01Contract register

No project too large, none too small.

We have built up a large library of models over the years for fabricators we've formed long relationships with. These are some recent jobs we found particularly interesting to work on.
Steel model for a six-bedroom three-storey dwelling in a London suburb
Steel model for a six-bedroom three-storey dwelling in a London suburbModel

C-01Residential · London

Six-bedroom dwelling, London suburb

A six-bedroom house set over three floors in a popular London suburb. Steel partially supports the first and second floors, and the roof is a mixed construction of softwood and steelwork.

The hips and valleys were set out in the model exactly to the architect's drawings, so the timber roof could be built straight onto the steel without adjustment.

3 storeys
Mixed steel and timber roof
Hips and valleys set out in steel
Steel balcony structures for three multi-storey units
Steel balcony structures for three multi-storey unitsModel

C-02Residential · Courtyard development

Balcony structures for three multi-storey units

Balconies were needed on three new multi-storey units set around a courtyard. The columns are simple, with supports fixed back to the new buildings at every level.

Cold-rolled decking beams carry mild steel plate, with finishes laid over the top.

3 buildings
Supports at every level
Cold-rolled decking beams
Heavy-section steel support structure over an entrance ramp
Heavy-section steel support structure over an entrance rampModel

C-03Temporary works · London

Support structure for site welfare facilities

On a large construction project in London, the site offices and health and welfare facilities had to sit above an existing covered entrance ramp.

Heavy-section beams were erected over the ramp to support the offices. The longest heavy sections — shown in green in the model — were 18 m long.

Heavy sections up to 18 m
Built over a live entrance ramp
Temporary works
Plan of the steel model for a children's hospice with four wings
Plan of the steel model for a children's hospice with four wingsModel

C-04Healthcare · UK

Children's hospice

The steelwork formed the main structural elements of a children's hospice, supporting precast concrete units.

The building is planned as a central hub with wings running out in four directions, each housing its own facilities.

Central hub and four wings
Supports precast concrete units
Main structural frame
3D model of a spiral steel fire escape staircase
3D model of a spiral steel fire escape staircaseModel

C-05Commercial · Office unit

Spiral fire escape staircase

A spiral steel staircase providing a single-storey fire escape from an office unit. The treads are cantilevered off a central circular column and pressed into a 'zed' profile before assembly, with durbar plate treads and landings.

The stair connects to the existing steel structure through brackets placed inside the building envelope. We provided site drilling details and levels so the existing steel could be prepared before the stair arrived, together with custom arrangement and assembly drawings and developments for the tube-to-tube connections.

Cantilevered 'zed' treads
Durbar plate treads and landings
Site drilling details for existing steel
3D model of an internal escape staircase for a sports hall
3D model of an internal escape staircase for a sports hallModel

C-06Leisure · Sports centre

Sports hall escape staircase

An internal escape staircase for a sports hall. The stringers are cranked PFCs with prepared butt welds, shop-assembled from our drawings and 3D model.

The handrailing was fully shop-welded into panels before treatment, then delivered and erected to our drawings. The model was 100% accurate and the client was delighted with the result.

Cranked PFC stringers
Shop-welded handrail panels
Erected without site alteration
Primed beam and column frame erected between London terraces
Primed beam and column frame erected between London terracesSite photo

C-07Mixed use · London

Mixed-use terraced refurbishment

A recently completed steel-framed refurbishment of a mixed-use terraced property: beam and column construction with some rigid connections and bracing, and hollow section columns.

The steel at first-floor level was prepared with shear studs for the concrete floor. We modelled the frame with erection marks and grid lines and coloured parts by reference layer for clarity. The finished building looks great.

Rigid connections and bracing
Hollow section columns
Shear studs for composite floor
3D model of a beam and column refurbishment frame
3D model of a beam and column refurbishment frame
Finished mixed-use terraced building after a steel frame refurbishment
Finished mixed-use terraced building after a steel frame refurbishment
3D erection view of a steel frame with grid lines and marks
3D erection view of a steel frame with grid lines and marks

SSD—07Included free

See the steel before it's made.

Not everyone on a project reads drawings. These two extras let clients, site teams and stakeholders understand the steelwork at a glance — at no cost.
3D model of a spiral steel fire escape staircase

Free · 01

Free 3D model on Sketchfab

With every project we draw, we can upload an anonymised 3D model of the steelwork to Sketchfab. Clients, site teams and anyone without CAD can spin it round in a browser or on a phone. Same format whatever the size of the job, uploaded on request and always anonymised.

Free renders of a steel connection and a small framed structure

Free · 02

Free steelwork renders

We can render a working connection, an area that needs resolving, or the whole project — free. A picture settles a site discussion faster than a section ever will, and it makes a far better social post when the job is finished.

SSD—10Free quotes

You've a similar project and need drawings fast?

Send us the engineer's drawings and calcs and we'll come back with a free, no-obligation quote — usually by return.