Week 29, Day 4 Posted on 2016-05-05 by dMb Reply Week 29, Day 4: More first-fix: electrical, plumbing and alarms More preparation for plaster on the first and second floors Week 29, Day 4 FIrst-fix of the low-loss header in the Plant Room, feeding the three heating circuits via Honeywell zone valves and Grundfos Alpha2 pumps