collects the water from these pipes and routes it to the exit pipe on
the wall opposite these pipes. It was at this point the city took over
the construction, switching from concrete pipe to corrugated metal
pipe. When this box was cast it had the 42 inch metal pipe (shown
cast in as the exit pipe which should be large enough to move the
water this basin receives. Below is a shot of the original basin wall
with this metal pipe. It sealed to the wall, wasn't rusted out and
worked fine. The real problems started downstream from this 42" pipe as
After this 42 inch metal pipe is where
the fun starts. For some unknown reason the city decided to shove a 36
inch metal pipe inside of the 42 inch catch basin exit pipe. This 36
inch metal pipe was
used to couple the catch basin at the wall to the
42 inch concrete pipe that was already under Raymond drive. The pipe
under the street is
hundred feet downstream from this basin at the wall. Before this 36
inch pipe was installed there were no flooding problems; although the
36 inch pipe worked all right when it was first installed, it wasn't
ideal. Here is a
shot that clearly shows the 36 inch pipe shoved inside the 42 inch one.
see the 2 layers of pipe (at the bottom of the pipe) once the
ground was opened up in this close up shot. This shot is a close up
outside of the catch basin next to the wall.
The above mentioned
catch basin is located between this pipe exit and the base of the wall.
The catch basin
is about 10-15 feet behind the end of this metal pipe. If there was
nothing downstream of this short 42 inch pipe except an open stream bed
created with rip rap rocks and plantings, there would be
no drain problem with the wall.