Hi all;
We have a standby diesel driven fire pump that goes through a right angle gear drive to a vertical shaft turbine type pump. (6 cyl, 325 HP)
The angle gear head is a 6 to 5 ratio with input 2100rpm and output 1760rpm.
The oil is about 11 galons of Mobil DTE BB (VG 220).
The pump is in an...
We have a 20,000lb vertical pump/motor with vibes over 0.38 ips in the horizontal direction from running at the natural frequency of the system. We tried adding mass and were successful to a point, but needed more then we thought prudent. We are discussing dynamic absorbers and I was wondering...
Last winter the frost caused the ground to expand in front of my shed door so I couldn't open it. My question is:
How can I prepare the ground to prevent this from happening again?
Particulars:
I live in New Hampshire, USA, near the seacoast.
Shed is on blocks with sill approx. 6" above...
