Site engineer Stevie's team finishes a fresh survey of the whole site: every level, every kerb, the new car park. He saves it on his laptop, in SURVEY_NEW.
What's already in the ground
The back alley's bill so far: 72 weeks · See the bill
Before anyone draws the new centre, they need to know what's already there. I'm the survey. Use the new me, not the one in the archive.
The wrong way
Alex, the designer, asks for a survey. Someone finds one in the client's archive. It's five years old. Nobody checks the date.
Since that survey, the client has built a car park and raised the access road. Alex designs the levels from it anyway: beautifully, and wrongly.
The new ramp meets the road 400mm below it. Rex, the assistant engineer, has a look.
Rex: Is that meant to be a step?
Stevie's laptop has had the right survey on it since month one.
Alex: We used the survey we had.
Stevie: Aye. That one's on me.
Levels, drainage and kerbs, all redesigned. The van is still at the bottom of the ramp.
The right survey existed. It lived on Stevie's laptop, and the ramp met the road 400mm too low.
+4 weeks on the back alley's bill: A five-year-old survey: the ramp, levels and kerbs redesigned in month four.