Book 1 - City of St. Petersburg

BASIS OF DESIGN BOOK 1
3 GENERAL PLANNING CRITERIA
EXISTING INFRASTRUCTURE
(continued)
Existing Water Service
A 6” potable water main feeds the existing Pier. The water meter
for the municipal Pier is located in the Uplands area, along with a
series of valves, most likely backflow preventers. A 6” fire service
main feeds the existing St. Petersburg Pier. A 4” PVC fire service
main to the St. Petersburg Municipal Marina is located to the
south of the existing Pier.
Existing Drainage
Pier
There are 10 stormwater grates on the Pier head and 18 grates
on the approach. All drainage grates drop into the Bay.
Bay Shore Drive
Along Bay Shore Drive NE, there are 36”, 30” and 12” diameter
pipes that collect stormwater and convey it eastwards to
4 outfalls that discharge into the Bay. Three of the outfalls
discharge to the south of the Pier, and one discharges to the
north. A box culvert flows north, crossing 2nd Avenue NE, and
discharges into the Bay to the east of the intersection of Bay
Shore Drive NE.
Pier Access Road
The access roadway has curb inlets approximately 60 ft.
immediately to the east of Bay Shore Drive on 2nd Avenue NE
that drop into 36” diameter pipe of the municipal stormwater
collection network. Further east, along the overwater section of
2nd Avenue NE, drainage inlets discharge directly into the Bay.
St. Petersburg Museum of History Area
The southern Museum lawn drains into swales that convey
stormwater north into a retention basin area. Areas north of
the Museum capture water in grates and convey water north in
6” and 8” PVC pipes. These pipes discharge into MES culverts
that then discharge into a retention basin area. The northern
edge of the retention basin area contains a 6” underdrain, which
along with the retention basin area overflow, feeds into a control
structure that discharges north into a 15” RCP pipe through the
seawall and into the Bay. A silt barrier is located on the northern
edge of the seawall protecting the Bay. The museum area
system drains 2.62 acres.
Dolphin Lot North of Pier Access Road
The northern parking system drains 4.15 acres. Stormwater
is captured in a grate system that conveys stormwater north
through a gravel encased 12” perforated RCP for stormwater
storage and retention. These pipes have an overflow discharge
into a FDOT Type “F” control structure, and then into a 15”
RCP discharging into the Bay. A water quality swale exists at the
northern edge of the site, and is fed by on-site runoff from the
parking lot, but is not fed by discharging drainage pipes.
3 - 56
THE NEW ST. PETERSBURG PIER