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This is an image of the drip leg of a hot water boiler blow off safety valve. the pipe has a 45 degree fitting at the bottom of it, this will cause any discharge from the safety valve to shoot out at this angle, possibly scalding any one who may be standing by the pipe, the code requires this pipe point straight down with no fittings on it, so the water goes straight down to the floor.  
Boiler water can be 220 degrees or higher, water can burn skin at 140 degrees. This little mistake could have caused serious injury to someone in the household. pipe installed by a handyman.

Scalding from boiler relief valve brip leg