The basic design rationale for MicroTrac hydraulic pump (and engine) size requirements is the ability to power the Liberator 2 CEB press to the extent that it can produce 6 bricks per minute. See calculations. This indicates 360 bricks per hour, or about 3000 bricks per 8 hour work day. Wow. This involves a 2 person team, one person running the LifeTrac hybrid Soil Pulverizer, and the second person stacking bricks. This improves upon the 500 brick per 8 hour shift sustained production rate that we ordealed last year, with a typical 2 person team. We still got the CEB workshop addition built – under the worst possible conditions. It was a worthwhile experiment in that we now have a spacious workshop environment – and with a planned sCEB floor and other improvements, we will not complain. It’s time to move on to the Solar Village. Now seeking collaborators for design assistance.
For a replicable, resilient community, it helps to have building material production capacity for producing required materials on the order of days, as opposed to weeks. If we take the CEB workshop addition as a particular case from our experience, it would take us 2 days – instead of 2 weeks – to press the required bricks, with machines eliminating human fatigue.