it appears that no thrust block
has been introduced to the upper 90 degree bend in the shaft.
Since you can't go straight from concrete cylinder to ductile iron, there were some challenges at the valve chamber where they had to jack hammer away at the existing thrust block
and the concrete cylinder pipe to expose the steel cylinder.
The depth of the top thrust block
is oversized by 75 mm to represent the support condition of the wall.
Moreover, thrust block
restraints are not required for most applications, which is a major cost factor with other piping systems.
The HPD system does not use a thrust block
or a ballast foundation.
Tenders are invited for Rubbersid Thrust Block
Assly To Si Pt.
The boring unit was set on a concrete slab with a six-yard concrete thrust block
After the insertion pit had been constructed, the jacking system and thrust block
were installed in the pit.
Ruberized Thrust Block
Assembly Rubberized Thrust Block
With Nut M14 And Spring Washer Of Base Frame To M/S.
(Anchor Block), Pipe laying along existing culvert and One Year.
, Pillars, Brick masonry Chambers and including cost of all material, T and P and labour required for the work and maintenance complete for In Any Non Participated Praposed Group, Leftover works of any praposed group, or to speedup the work proggress as per requirement of the deparment in any other praposed group at Ujjain, M.
The scope of works has included the construction of concrete valve chambers at one-kilometre intervals, incorporating butterfly valves, dismantling joints, air release valves, washouts and concrete thrust blocks