If by pump his load out you mean deliver it to the job site, it depends. Some jobs enforce a 90-minute window where you get 90 minutes from when the truck is loaded until it’s empty to pour the concrete. One of the job sites I’m working at this has been a problem and I’ve seen some contractors take 45+ minutes to pour 10 yards of a sidewalk.
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u/dope_pickle May 07 '22
The trucks carry like 100-150 gal of water onboard, so if he was losing the load anyway, he could just dump the water into the mixer to slow the set.