Eli5: Why are most public toilets plumbed directly to the water supply but home toilets have the tank?
In: 4741
Aside from everything already mentioned, public toilets typically do not have an accessible tank in order to prevent mischievous folks from defecating into the tank, a classic prank known as the “upper-decker”.
[How Flush-o-meter type (commercial) toilet valves work.](https://www.youtube.com/watch?v=FOw9W39C_Ts)
Aside from everything already mentioned, public toilets typically do not have an accessible tank in order to prevent mischievous folks from defecating into the tank, a classic prank known as the “upper-decker”.
Aside from everything already mentioned, public toilets typically do not have an accessible tank in order to prevent mischievous folks from defecating into the tank, a classic prank known as the “upper-decker”.
People keep focusing on the inlet size and pressure, but the answer is primarily refill time. Flushometers are MUCH faster than a tank type toilet. Commercial facilities have to be able to handle the maximum capacity for that building.
[How Flush-o-meter type (commercial) toilet valves work.](https://www.youtube.com/watch?v=FOw9W39C_Ts)
[How Flush-o-meter type (commercial) toilet valves work.](https://www.youtube.com/watch?v=FOw9W39C_Ts)
People keep focusing on the inlet size and pressure, but the answer is primarily refill time. Flushometers are MUCH faster than a tank type toilet. Commercial facilities have to be able to handle the maximum capacity for that building.
People keep focusing on the inlet size and pressure, but the answer is primarily refill time. Flushometers are MUCH faster than a tank type toilet. Commercial facilities have to be able to handle the maximum capacity for that building.
The flushometers on commercial toilets take a 1 inch water supply. A residential house is only fed with a 3/4 inch pipe of the water main. When you walk into a bathroom with 4 toilets om the wall that room is fed with a 2 inch water main. When you build a house your tap in fees for your water and sewer is based off the size of your water supply. The water tap in fee for a house with a 3/4 inch pipe ( around Cincinnati ) is about 3 thousand. I plumbed a bank 15 years ago with a 1 inch pipe, its tap in fee was 47,000$. The last grocery store I priced 20 years ago with an 8 inch water pipe was 700,000$. Remember this is also for fire protection.
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