HomeMy WebLinkAboutDrainage Concerns Unit 2/0-/3P- 2 6
LLOYD ANR AS5DCIATES
ENGINEERS AND SURVEYORS ROBERT F. LLOYD
REPORTS REGISTERED CIVIL ENGINEER 3370
DESIGNS RE3I6TERED LAND SURVEYOR 944
SUPERVISIuN (305) 562-4112
APPRAISALS
CONSULTATIONS 1 B 3 S 2 0 T H STREET
VERO BEACH, FLORIDA
32960
October 18, 1976
1Ir. Ken Miller
General Development Corporation
2095 SW U.S. 1
Vero Beach, Florida 32960 ,
Dear Ken:
I want to thank you for dropping off the plans and specifications for the
renovation work to be done in Sebastian Highlands. In going over the
specifications, I do not see any mention of pavement removal where
there has been a heavy infestation of Torpedo Grass. Herbiciding
these areas will provide little, in the way of permanent repair. On
the separate sheet you provided of Phase I, Unit 2, it appears gen-
erally, that the drainage will operate. There are several places that
do not seem proper.
At the Southwest corner of Lot 41, Block 110, the invert is 19. 05. The
driveway in Lot 20 has an elevation of 19. 55, and the culvert just be-
yond, at the Northwest corner of Lot 20 is 19. 15 - 550' average, and
. 10 higher. It is my feeling that although this drainage as depicted
will function properly,. if properly constructed, a true picture can not
be gained as the inverts of the existing swales are not shown.
To my certain knowledge, there are swales in this area that have been
dug unnecessarily deep. These unnecessary deep swales could be raised
and the effluent from same be directed into the ditch at a lower elevation
by the use of a drop inlet or rip -rapping the flume.
Your typical section does not limit or designate the ditch slope. I would
appreciate your limiting the slope to assure stability. The typical sec-
tion shown with 4 foot and 6 foot shoulders are not desirable. If they
Ir
It
October 18, 1976
Mr. Ken Miller
General Development Corporation
PAGE TWO.
are to be constructed in the area of Phase I, Unit 2, it will be necessary
to fill previously removed shoulders. It is suggested that a very stable
material be used in constructing these shoulders, as if sand is utilized,
it will block the adjacent drainage swale :4. -he first time we have a heavy
rain, or a car leaves the roadway.
I will be most happy to go over this with you at your convenience. Un-
fortunately, I will be out of the office for three weeks as I am entering
the hospital in Miami for a hip replacement.
Yours very truly,
LLOYD AND ASSOCIATES
By:
V A�O/
Robert F. Lloyd, P. � E.
RFL/ba
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