HomeMy WebLinkAboutCulvert Repair Wimbrow & CR512MOSBY AND ASSOCIATES, INC.
CONSULTING ENGINEERS
1995 39TH AVENUE, SUITE D
P.O. BOX 6368
VERO BEACH, FLORIDA 32961
305-569-0035
July 18, 1988
Mr. Jerry Thomas
City of Sebastian
Post Office Box 127
Sebastian, Florida 32978-0127
Subject: Culvert Replacement - Wimbrow & CR -512
Sebastian, Florida
Engineer's Project No. 88-208E
Dear Mr. 'Phomas:
As requested, we have performed an on-site inspection of the col-
lapsed culvert pipe, located at the intersection of CR -512 and Wimbrow
Drive. Based on our on-site inspection and your review of the original
design drawings, the existing collapsed pipe is a 43" x 68" oval metal
pipe.
We understand that you want to replace the collapsed culvert with a
48" round metal pipe. The equivalent required round pipe for the
existing 43" x 68" oval pipe is 54".
We further understand that the 48" is readily available, and can be
purchased economically.
Knowing that the County and City has future plans, to rework the road-
way drainage system in the near future and the forty-eight inchs (48")
is temporary, we can approve the smaller size culvert. Further justi-
fication for our approval is based on our observation of the drainage
ditch that it does not appear to have ever functioned at full capa-
city.
Since the 48" pipe is smaller, than the existing pipe, it's hydraulic
carrying capacity is less that the existing pipe. We recommend that
the hydraulic gradeline or slope be increased. The increased slope
will be limited by the existing slope of the drainage ditch but, even
a few inches will increase the flow rate of the 48" culvert.
Should you require further information, please call.
Very truly yours,
RandyL. osby, P.E.
RLM:mrk
cc