The pipe at the back of this gas station has been dripping for so long it has eroded the sidewalkcan_of_cactus t1_je50l5i wrote
It might be a condensate drain from a furnace, boiler or water heater.
Condensate eats concrete.
sharuffino t1_je69og7 wrote
Why does it eat concrete?
EvlSteveDave t1_je7mmzg wrote
Concrete has the electrolytes that Condensate crave.
can_of_cactus t1_je6i61p wrote
Condensate is acidic. Can have a pH as low as 3.
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