We started day two with a spot in Kamalpura which has a row of flat green schist rock slabs with carved "plates". Like two rows of picnic tables with a channel 
running between the two rows. The channel could be used both by servers for serving food as well as flooding it with water for washing the plates.
The detail of the plate shows little channels for draining the plate.
Hampi had an ingenious water distribution system using open channel and gravity. The visible hydraulic system were used to provide water to the Royal Center. There does not seem to be any proof of a "municipality" providing water for public sources.
The octagonal fountain, meters away from the BhojanShala seems to be a control tower in the hydraulic network with six pipelines converging. The pipe inlet uses siphon technique for maintaining the pressure
The earthenware pipe inlets are clearly visible in this picture. The pipes were made of terracotta and came in three standard sizes (10, 16 and 19 centimeters - advancing a theory that they were mass produced). The earthenware pipes is also a very distinct Muslim architectural influence.
