Twinton Steel · the frame from saw to crane

Status

SHOP BOARD, TONNES PER STATIONdates simulated

Every duct that crosses a beam is a hole someone has to cut.

A steel fabricator gets the frame right and then pays for everyone else's model. Ducts and pipes run through beam webs, the openings are found on site, cut with a torch and a fire watch, and the engineer is asked after the fact. The shop cannot plan its saw line until the drawings settle, and the erector cannot plan picks until the shop says what ships. This page reads a real clinic's steel from the model and follows every piece from the saw to the crane.

…of steel in … pieces: wide-flange beams and columns weighed from the kg/m in their profile names, K-series joists from the SJI table, lengths measured from the model. … piece marks

…places where a duct or pipe in the delivered models runs through a steel member. … of them pass the screening for an opening cut in the shop before the piece ships

…trailer loads of 20 t in erection order. … pieces ship late while their opening waits for the engineer (simulated dates)

Twinton Steel: one twin from the detailer to the crane hook

For the fabrication manager

Tonnes per station week by week, by profile, and the pieces held while an opening is reviewed. Repetition in piece marks is counted, so the saw line is planned in batches.

For the detailer and the engineer

Click a member: its mark, length, weight, both end connections as the model shows them, and every web opening with its position from the end and its depth. The engineer gets the openings screened against the beam depth and span, and decides.

For the saw and drill line

Today's cut list grouped by mark, with the pieces that need a web opening flagged. Lengths come from the model, not retyped.

For the erector

Crane picks for the day in erection order with the heaviest lift named, and the trailer loads arriving in the next three days with their marks.

Real	Simulated
The clinic's steel: every W460X60 beam, W250X67 and W150X22.5 column and 14K1 and 10K1 joist in the structural model (buildingSMART Medical-Dental Clinic, CC BY 4.0)	Shop and erection dates, stations and the 40-pick crane day
Lengths from geometry; weights from kg/m in the W profile name and the SJI joist table; piece marks as same profile and length to 10 mm	When the engineer approves each opening
End connections read from where each beam end lands: on a column, on a girder, or bearing	Connection types named from that (shear tab, double angle, joist seat); the connection designer sets the real ones
Every duct and pipe crossing steel, its depth and its position along the span	The screening rule (opening depth up to 60 % of the beam, middle half of the span) is a first pass, not a design check

Real

Simulated

The clinic's steel: every W460X60 beam, W250X67 and W150X22.5 column and 14K1 and 10K1 joist in the structural model (buildingSMART Medical-Dental Clinic, CC BY 4.0)

Shop and erection dates, stations and the 40-pick crane day

Lengths from geometry; weights from kg/m in the W profile name and the SJI joist table; piece marks as same profile and length to 10 mm

When the engineer approves each opening

End connections read from where each beam end lands: on a column, on a girder, or bearing

Connection types named from that (shear tab, double angle, joist seat); the connection designer sets the real ones

Every duct and pipe crossing steel, its depth and its position along the span

The screening rule (opening depth up to 60 % of the beam, middle half of the span) is a first pass, not a design check

Priced by the tonne, or for the whole shop

PILOT

€12,000

One project: your model read into marks, weights, ends and openings, the board for shop and site, your saw list format, eight weeks.

PROJECT

€40 / t

Per tonne of steel on the job, minimum €8,000. A 1,200 t hospital frame is €48,000.

SHOP

€84,000 / yr

Every project through the shop, the tablets on the saw line and the erector's app.

Euro excluding VAT. The pilot fee is credited against the first year of the shop licence.