DesignDesign: Week 20…
SD-118
The precast supplier draws the inlet chamber it'll make in its factory: shop drawing SD-118.
Stage 4 · Design it · Stop 7 of 7
Shop drawings
The back alley's bill so far: 89 weeks · See the bill
The information · A shop drawing
The precast supplier draws its own version of part of me. It comes in through Goods In like everything else.
The wrong way
By email
It goes by email to a site engineer, who forwards it straight to the factory with "looks fine". Nobody checks it against 051.
Made from C01
SD-118 was drawn from 051 at C01. 051 is on C02 now, after the proper question. The factory casts it anyway.
BuildBuild: Week 30…
The delivery
The chambers arrive. The pipe openings face the old sewer, 600mm from where the pipes now are.
Recast
Bev, who buys everything the job needs, rings the supplier.
Bev: Who said these were right?
Supplier: Your email said 'looks fine'.
Four weeks
The wrong chambers go back. The new ones take four weeks. The gang guards an empty hole and gets very good at crosswords.
Two words in an email, a drawing two versions out of date, and chambers that face the wrong way.
+4 weeks on the back alley's bill: A shop drawing straight to the factory: chambers cast from an old revision, and four weeks waiting for new ones.