Good Morning
Hope all are well and safe! Purchased 3 story Mix use corner property (9 stores 16 apts) 18mos. Ago and previous owner of 30 years put Band AIDS on every fix. I’ve been a Landlord for 40 plus years New to a 2 pipe system. I replaced most shut off valves and Thermostatic Traps. Old Boiler since 2006 with wrong pipe risers started leaking from side. I replaced with same boiler but gas conversion. 30inch high 2.5 inch risers to a drop header of 4 inches. Boiler went on for 3 days no problems. 30 feet down on main header 4 to a 3 inch to a 2 inch developed water leaks. Replaced a few feet of 2 inch then after water hammering 3 inch into a 2 inch. After that the 3 inch nipple started leaking. Replaced the 3 inch nipple and notice 4 (2x12) floor joists cracked and split above 3 inch main header thus straps snapped, reinforced all joists with lolly columns and plumber slowly jacked up 3 inch to where it should be, however wasn’t getting the proper pitch because the whole area was settling ( Since 1927) , Boiler back on after 4 hours severe water hammering, Previous Boiler was working on 2 sections of a 7 sections Peerless.
Thank you for your input in advance
Matthew
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