Revision as of 21:16, 29 August 2021

Notes

3000 sf build of prototyping area for the Seed Eco-Homes, for building a second workshop space, with various prototyping experiments from material production to large CNC machines, 2021. Large truss structure at Universal Prototyping Structure

14 foot sections are laid down, so it's convenient for a scree board. Work in 14 foot strips. Bull float follows right after screeding. But how do they keep the screed board level? This guy also sells a course on how to start a concrete business doing work like this.

Extender truck or chute extender; pump truck otherwise. Here is a wet setting of edge rebar reinforcement:

Note also the height level rebar stuck in and cleared at 1:40 - to set screed level.

In good weather - power trowel is about 2 hours after pour is finished.

35 yard slab
2 guys screeing, 2 guys behind them moving concrete around - 4 person job
Batched at 6.
Arrived on site at 7.
Finished pour 8:30
Start mag floats on edges at 10:20 AM
Edger at 10:30
2:15 hours after pour ready to walk on, sinks about 1/8"
Float blades first, finish trowel blades second. Take off the float blades to use the finish blades.
Power trowel started at 11 am at 2.5 hours after start of pour - with float blades first. Only 1+ hour for power trowel.
Notes: effectively, go from screeing step - to edger - to power trowel. Edger can be avoided. Power trowel does both float and trowel.

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+Note also the height level rebar stuck in and cleared at 1:40 - to set screed level.
 =Understanding Concrete Timing=