October 31, 2018
SEMINOLE ELECTRIC COOPERATIVE
Control Enclosure
Palatka, FL
DESIGN & CONSTRUCTION TEAM
General Contractor: WorleyParsons, TCI Sales
Owner: Seminole Electric Cooperative
Precaster: Oldcastle Infrastructure, Shelter Solutions
Manufacturing Facility: Oldcastle Infrastructure (Newnan, GA), Oldcastle Infrastructure Enclosure Solutions (Cable Trench System)
The intent of the SECI Riverview Substation project, located at the intersection of County Landfill Rd. and Cow Bay Rd. in Palatka, FL, was to design, engineer, fabricate, deliver and secure to Owner-supplied foundation, a substation Control Enclosure in preparation for a future project that will relocate existing DC batteries, communication equipment and protection and control facilities from within the existing Control Enclosure. In addition, Oldcastle Infrastructure provided the cable trench system.
CONSTRUCTION CHALLENGE
Oldcastle Infrastructure was contracted to provide a – 23’ long x 15’ Wide x 11.6’ High- precast concrete Control Enclosure with complete and functioning equipment and systems capable of safe and reliable operation including electrical, lighting, building and equipment grounding, lightning protection and HVAC.
The cable trench system consisted of 30ft. Oldcastle Plastibeton High Density Polymer Concrete 2016 Drive-On Cable Trench complete with covers and
76ft. Oldcastle DUO Molded 2016 Pedestrian Trench complete with covers.
PRECAST & TRENCH SOLUTION
The turnkey project involved the manufacturing and complete out-fitting of a bullet resistant, precast concrete OPIRCS1523 Precast Shelter having 4 inch thick exterior walls with an exposed aggregate concrete finish. In addition, all equipment and systems were installed at the factory before shipping. (See Scope of Work). The RCS1523 Precast Shelter was manufactured and equipped at our Oldcastle Infrastructure – Newnan,GA facility and installed in the field by our Oldcastle Infrastructure Shelter Solutions Group.
The Oldcastle Cable Trench System was tied into an existing concrete trench system with a transition piece attaching Oldcastle Infrastructure’s new cable trench system together with the existing concrete trench system.
CONSTRUCTION SCHEDULE
Start Date: May 2012
SCOPE OF WORK
Precast Structure
A. STRUCTURAL ENGINEERING
Engineering: Provided complete product engineering services.
Drawings: Provided detailed engineering drawings.
Supervision: Provided an on site managing supervisor.
B. PRECAST CONCRETE SHELL
Size: (1) RCS 1523 Precast Concrete Shelter
Outside Dimension – 23’ long x 15’ Wide x 11.6’ High
Finished Inside Dimension – 21’ 9” Long x 13’ 9” Wide x 10’ High
Weight: Approximate finished weight: ~76,000 pounds
Specifications: Floor load: 200 PSF
Roof load: 85 PSF
Wind load: 150 MPH, Exp “C”
Bullet Resistance: UL752 Level 4 Equivalent (.30-06 at 15 Ft.)
Fire rating: Two Hour Equivalent
Seismic Zone: Up to 50% Gravity acceleration per IBC2006.
C. FINISHES
Exterior Walls: Solid Precast Concrete, 4” Thick, exposed aggregate with grey sealer and trim
Interior Wall & Ceiling: Nudo white 1/2 “ FRP board
Insulation: R-19 in the walls and R-30 in the ceiling
Floor: Grey slip resistant Thorocoat coating (floor insulation in foundation)
Roofing: White Elastomeric coating
D. DOORS AND OPENINGS
Doors: (1) 6’-0” x 8’-6” heavy duty steel double door and frame, R-3.8 (Doors / frame galvanized, primed and enamel painted)
Locks: Cylindrical lockset with changeable core and interior panic bar
Other Door Hardware: (1) NRP Stainless steel hinges, anti pick plate; door holder, hydraulic door closer, weather strip, aluminum threshold, door sweeps, and surface bolts
Door Hood: (1) Door drip cap – 2 ½” wide and full width canopy
Openings: Floor and wall block-outs determined by customer,
Telco Cable Entry: (1) 4 port Microflect waveguide entry panel
E. POWER
Power Service: 200A 10 120/240V supplied by others
Main Distribution Panel: (1) SqD 200A 10 120/240V panel, 40 space, 22kAIC with main breaker
Surge Suppression: (1) SqD SDSA1175 integrated into MDP Convenience
Receptacles: (4) 20A, 120V
Exterior GFI Receptacle: (2) 20A, 120V
F. ENVIRONMENTAL SYSTEM
HVAC: (1) Bard 2 Ton 10 HVAC Unit with 5kw heater, no economizer
Controls: (1) Automatic thermostat
Exhaust Fan: (1) Centrifugal fan, Grainger 4HZ34 with timer control and hood
Intake Louver: (1) 24” X 24” fixed aluminum intake louver with hood
G. ALARMS
Alarms: (2) Door intrusion alarm switches, Honeywell S&C, DTE6-2RN2
H. LIGHTING
Interior: (8) 4ft.- 2 Lamp (32W each) fluorescent light fixtures with acrylic lens covers
Exterior: (1) 70W HPS Exterior light with photocell, Grainger 2RGW8
Emergency: (1) Emergency fixture with dual 1.5 watt lamps, EXIT sign, 3 hour battery (Larger lamps not available with 3 hour battery)
Switches: (1) 20A light switch
K. ADDITIONAL ITEMS
Smoke Detector, GE 350CX; (1) Fire extinguisher, Grainger 4XP83; Tie down kit with anchors; (1) eye wash station, Grainger 1KW77; Interior and exterior cable ladder system per specification and drawing; (1) Trenwa # CR2212-120 enclosure
TRENCH SOLUTION
Scope
Oldcastle Infrastructure Enclosures Solutions provided the Cable Trench System for Seminole Electric’s Riverview Substation Expansion project. The Oldcastle Cable Trench System was tied into an existing concrete trench system with a transition piece attaching Oldcastle Infrastructure’s new cable trench system together with the existing concrete trench system. The cable trench system consisted of 30ft. Oldcastle Plastibeton High Density Polymer Concrete 2016 Drive-On Cable Trench complete with covers and 76ft. Oldcastle DUO Molded 2016 Pedestrian Trench complete with covers. The Oldcastle trench system was installed by a construction crew hired by Seminole Electric and installed in between the existing substation cable trench system and attached into the new Oldcastle Infrastructure Control Building.
Manufacturing
The Oldcastle Enclosure Solutions Cable Trench System was manufactured and shipped from its Candiac, QB, Canada Manufacturing Facility.
The Plastibeton Cable Trench System is designed and tested to support 40,000 lbs over a 10X10 square area and is manufactured utilizing a patented High Density Polymer Concrete material. With a combination of 6% resin and 94% stone, this 20,000 psi composite material does not absorb water, is not affected by acids, salts, chemicals with exceptional resistance to freeze/thaw cycles and is a dielectric material with no grounding required.
The Duo Pedestrian Cable Trench System is manufactured utilizing two composite materials and a patented manufacturing process. The Duo trench is the lightest most durable pedestrian trench system available today and is designed to withstand the lateral loads of passing vehicles without deflection and light enough to hand install.
Find out more about Oldcastle Infrastructure Cable Trench Systems and Precast Concrete Building Structures.