SECTION ACTIVE VEHICLE BARRIER (USR GRAB-400)

Transcription

1 SECTION ACTIVE VEHICLE BARRIER (USR GRAB-400) PART 1 - GENERAL 1.1 GENERAL PROVISIONS A. Attention is directed to the CONTRACT AND GENERAL CONDITIONS and all Sections within DIVISION 01 - GENERAL REQUIREMENTS which are hereby made a part of this Section of the Specifications. 1.2 DESCRIPTION OF WORK A. Work Included: Provide labor, materials and equipment necessary to complete the work of this Section, including but not limited to the following: 1. Reusable ground-retractable automobile barrier system including the following components: a. Anchor stanchions. b. Electronically controlled, electrically operated lift arms. c. Integrated net. d. Operating controls and logic. e. Power circuits. f. Accessories. B. Related Work: The following items are not included in this Section and will be performed under the designated Sections as applicable: 1. Section , Asphalt Paving. 2. Section , Concrete Paving. 1.3 SUBMITTALS A. Product Data: Submit manufacturer's printed product data specific to the model specified. B. Shop Drawings for Approval: Submit 11 x 17 shop drawings for fabrication, installation and erection of all parts of the work. Provide detail drawings containing complete wiring and schematic diagrams, and any other details required to demonstrate that the system has been coordinated and will properly function as a unit. Show proposed layout and anchorage of

2 equipment and appurtenances, and equipment relationship to other parts of the work including foundation and clearances for maintenance and operation. C. Spare Parts Data: Submit spare parts data for each different item of material and equipment used, after approval of the shop drawings. Include in the data a complete list of parts and supplies, with current unit prices and source of supply. 1. Provide a manufacturer's standard recommended spare parts package, with current unit prices and source of supply complete with detailed manuals on parts replacement, with each barrier to facilitate 1 year of normal operation. Give particular consideration to system components which are not readily available from local or commercial sources and which are critical to the operation of the system. D. Operations and Maintenance Data: Submit six copies of operation and maintenance manuals, to be provided a minimum of 2 weeks prior to field training. Manuals shall be approved prior to acceptance. Operation manuals shall outline the step-by-step procedures required for system startup, operation, and shutdown. The manuals shall include the manufacturer's name, model number, service manual, parts list, and brief description of all equipment and their basic operating features. Maintenance manuals shall include routine maintenance procedures. The manuals shall include equipment layout, and checklists containing basic troubleshooting procedures. 1.4 QUALITY ASSURANCE A. Manufacturer Qualifications: A company regularly engaged in design and manufacturer of active vehicle barriers, with a minimum of 50 installed systems. B. Installer Qualifications: Engage an experienced Installer acceptable to the manufacturer of the barrier system. C. Delivery, Storage and Handling: Comply with manufacturer s requirements. 1.5 WARRANTY A. Manufacturer s Warranty: For each product type specified, provide manufacturer s standard warranty. PART 2 - PRODUCTS 2.1 MANUFACTURER A. Acceptable Manufacturer: GRAB-400 as manufactured by Universal Safety Response, 277 Mallory Station Road, Suite 112, Franklin, TN 37067, PH: ; FAX: ;

3 2.2 SYSTEM PERFORMANCE A. System Definition: A ground retractable barrier is an attenuating device designed to span a roadway or traffic lane to bring an encroaching vehicle to a stop and prevent its passage. The system consists of a steel anchor post at each end and a cable/net assembly. The anchor posts are made from a sub-grade box frame and a steel I-beam post. The net consists of upper and lower extra-high-strength wire strands, with a wire rope in the center and vertical wire rope sections attached to the top, middle, and bottom cables with clamps. B. ASTM M40 Certification: System shall have been tested and certified by an ASTM Certified anti-ram testing facility to the ASTM standard for M40 testing with a dynamic penetration rating of P2 or better as issued in designation F published August C. Weather Performance: The barrier system shall operate satisfactorily under the following environmental conditions: 1. Temperature: The barrier system shall be able to function in extreme temperature ranges of minus 20 degrees F to plus 120 degrees F regardless of humidity. 2. Snow and Ice: Freezing precipitation shall be addressed by installing an embedded resistive heating element in the foundation as required by ambient weather at the site. 3. Flooding: The barrier system shall be operable during flood conditions of up to 6 inches of standing water on the road surface. 2.3 SYSTEM CONFIGURATION A. Reduced Risk of Injury: The barrier system shall by design inherently reduce risk of injury to vehicle occupants using a steel cable net to arrest the vehicle. Energy absorbing techniques shall be incorporated into the barrier design to reduce the forces on the vehicle occupants at impact. B. Bi-Directional Barrier: The barrier system shall be designed to stop a vehicle attempting to gain unauthorized entry from either direction. C. Reusable / Re-settable Barrier: The barrier system shall be designed to be a reusable barrier and be re-settable in as little as 30 minutes after impact. D. Emergency Operation: The barrier system shall be capable of being raised in less than 2 seconds when activated by the emergency deploy button. E. Barrier Application: The barrier system shall be configured in accordance with site conditions. A single barrier system may span the entire roadway which must be secured. Roadway widths of 12 to 60 shall be supported by a single certified barrier system. F. Foundation: The foundation shall require an excavation depth of no greater than 18 inches as measured from the roadway surface. The foundation shall utilize a rebar reinforced concrete slab to properly anchor the barrier system

4 G. Anchor Stanchion: Anchor stanchions shall be set in a concrete foundation for transference of energy upon impact. When retracted, the net of the barrier system shall be recessed into the roadway surface in order to ensure smooth vehicle crossing. When deployed, the barrier shall present an obstacle to approaching vehicles. Upon impact, forces shall be first absorbed by net, pistons, and anchor stanchions before being transferred to the foundation of the unit. H. Net: The net shall use high strength aircraft cable and be assembled with high pressure pressedswage fittings. The typical net height shall be approximately 50 inches as measured from the top of the net to the finished road surface. Typical net height from grade shall be approximately 14 inches to bottom of the net. Length of net shall be determined by width of the roadway, height of crown in roadway, and other site conditions. The net shall be raised and lowered in a 90 degree fashion by the lifting arms. I. Pre-Deployment Position: The net shall be recessed in virgin rubber pads made of materials typically used in grade level railroad crossings. The rubber pads shall be 5 inches thick with recessed preformed pattern to accept net in the pre-deployment position. J. Lifting Arm Assembly: Each lifting arm assembly shall be equipped and operated by a variable frequency drive (VFD) 3hp (up to 10hp) electric motor. The size of the electric motor shall depend on the length of net specified. The motor shall be inverter duty rated. Electric motor shall have double shaft ends and C-face mount for direct inputs and direct torque transfer. Each lifting arm assembly shall incorporate a single rectangular steel mast with a single pivot point to raise and lower the net. The lifting arm shall incorporate shear pins for net release in the event of an impact. The specified barrier shall not utilize pneumatic or hydraulic pumps, rams or hoses to deploy the barrier. Power off operation shall be accommodated by means of a simple drive accessible from the front of the motor assembly. K. Configuration: The system consists of a steel anchor post at each end and a cable/net assembly. The anchor posts are made from a sub-grade box frame and a steel I-beam post. The net consists of upper and lower 38-mm diameter Extra High Strength (EHS) wire strands, with a 16-mm diameter wire rope in the center and 16-mm diameter vertical wire rope sections attached to the top, middle, and bottom cables with clamps. L. Multiple Barrier Application: Each barrier system shall have its own control and operate independently from each other as well as simultaneously under necessary conditions. 2.4 CONSTRUCTION A. Foundation: Constructed of 4,000 psi concrete. The barrier system foundation shall require an excavation depth of no greater than 18 inches as measured from the roadway surface. The foundation shall utilize a rebar reinforced concrete slab to properly anchor the barrier system. B. Finish: Surfaces shall be coated in accordance with manufacture s requirements. All exposed surfaces shall be powder coat finished or liquid spray with UV inhibitors for extended paint life and oven cured for final moisture barrier. White and Red coloring for net in roadway shall be provided for by means of a replaceable, flexible PVC wrap

5 C. Main Power: Power requirements as applicable to site, one of the following; 240VAC 1 Phase, 208VAC 3 Phase, or 480VAC 3 Phase. Power shall be provided to the barrier system at a single point, with a circuit size determined by the size of the barrier and the power available. D. Control Circuit: A control circuit shall be provided to interface between the control panel and the barrier system. This control circuit shall contain all relays, timers, programmable logic circuits and other devices necessary for operation. The control circuit shall include all necessary control logic to override the normal up-down operation in the event of an emergency deployment. E. Primary Control Panel: The primary control panel shall be supplied to control all barrier system functions. The control circuit shall contain all relays, timers, and an industrial programmable controller programmed as necessary for the barrier operation. Optional terminals may be provided to interface with client access control systems and operation devices. The primary control panel shall be a stainless steel NEMA 4X enclosure approximately 60 inches by 36 inches by 12 inches deep or as applicable. Terminal strips shall be provided to interconnect all devices. F. Barrier System Sensors - Suppression Loops: Two inductive loops whose outputs shall be used to prevent barriers rising when a vehicle is within a prescribed distance of the barrier. The output of the loops shall override all barrier rise signals until 1/2 second after a vehicle clears the suppression loop. G. Barrier System Accessory - Traffic Lights: Red/yellow 8 inch traffic lights shall be supplied for each entrance and exit to alert motorists of the barrier position. The yellow flashing light shall indicate that the barrier is fully open. All other positions shall cause the light to show Red. H. Barrier Heater: A waterproof resistive element barrier heater with a thermostat control and NEMA 4 junction box connection point shall be provided for de-icing and snow melting. The heater shall provide barrier operation to an ambient temperature of minus 20 degrees F. 2.5 ELECTRICAL WORK A. All-Electric Operation: The barrier system shall accomplish normal and emergency up/ down operation without the use of pneumatics, hydraulic pumps, cylinders, hoses or reservoirs. B. Motors, automatic motor control equipment and protective or signal devices required for the operation specified shall be provided by this section. Any control wiring required for the operation within 1,000 feet provided by this section. Pathways for control wiring outside barrier foundation shall not be provided by this section. Coordinate with site contractor for definition of electrical scope of work. Electrical power terminated in Barrier Control Panel not provided by this section

6 2.6 CONTROLS A. A master and/or remote control panel shall be provided to interface between all barrier control stations and the power unit. The same control panel may be provided for multiple barriers where applicable. The control circuit shall contain all relays, timers, and other devices or an industrial programmable controller programmed as necessary for the barrier operation. The enclosure shall be as indicated on the Drawings. B. Main Operator Panel: A main operator panel shall be supplied to control barrier functions. This panel shall have a key-lockable main switch with main power "ON" and panel "ON" lights. Buttons to raise and lower each barrier shall be provided. Barrier "UP" and "DOWN" indicator lights shall be included for each barrier. An emergency fast operate circuit (EFO) shall be operated from a push button larger than the normal controls and have a flip safety cover installed over the push button or toggle switch. The EFO shall also be furnished with an EFOactive light and reset button. The main control panel shall have a key lockable switch to arm or disable the remote operator panels. An indicator light shall show if the remote control panel is enabled. C. Remote Operator Panel: A remote operator panel (where applicable) shall have a panel "ON" light that is lit when enabled by a key lockable switch on the main control panel. Buttons to raise and lower each barrier shall be provided. Barrier "UP" and "DOWN" indicator lights shall be included for each barrier. The EFO shall be operated from a push button larger than the normal controls and have a flip safety cover installed over the push button or toggle switch. Activation of either EFO will operate all barriers. The EFO shall be interconnected with an EFO-active light. When the remote control panel EFO is pushed, operation of the barrier will not be possible from this panel until reset at the main control panel or maintenance panel. PART 3 - EXECUTION 3.1 EXAMINATION A. Examine conditions where systems are to be installed. Do not proceed until unsatisfactory conditions have been corrected. 3.2 INSTALLATION A. General: Install systems in accordance with manufacturer s recommendations. Perform primary installation, adjustment and testing in the presence of a representative of the manufacturer. B. Inspect installation and adjust operable components to operate properly, without binding or warping. Check and readjust operating hardware. C. Clean soiled surfaces to remove dirt, fingerprints, adhesives, and other foreign materials according to manufacturer's written instructions

7 D. Remove and replace defaced or damaged components that cannot be satisfactorily repaired. 3.3 FIELD TESTING A. Upon completion of construction, perform a field test for each unit. For barriers, the test shall include raising and lowering the barrier through its complete range of operation, as well as the complete testing of all safety devices, accessories, and associated signaling and warning devices. Furnish equipment and make necessary corrections and adjustments. B. Conditions that interfere with the proper operation of the barrier disclosed by the test shall be corrected at no additional cost. After adjustments are made to assure correct functioning of components, applicable tests shall be completed until satisfactory results are obtained. 3.4 DEMONSTRATION A. Provide the services of a manufacturer-authorized field-service representative to demonstrate and train applicable personnel in operations and maintenance procedures. END OF SECTION NOTE TO DESIGNERS: Due to the nature and intended use of this technology, special provision and consideration must be given to the specific placement, model selection and site conditions associated with the installation of the barrier systems. Special care must be undertaken with regard to the installation, use and maintenance of any device designed as a vehicle barricade, especially those equipped for rapid deployment and traffic control capabilities. In addition, you must ensure that approaching vehicles and pedestrians are fully aware of the barrier and operational procedures. To ensure the safety of oncoming vehicles and pedestrians the following considerations are strongly recommended: Install clear and visible warning signs noting the presence of vehicle barriers Properly illuminate the vehicle approach path and control points Incorporate the use of traffic signals (stop-go), audible warning devices, horns, buzzers, and/ or flashing beacon or strobe lights Incorporate safety reflectors and/ or reflective tape on vertical surfaces for high visibility Incorporate the use of wash board speed bumps on road surfaces at appropriate intervals to alert the vehicle operator upon approach. These recommendations can be used in their entirety or in various combinations so as to alert vehicle operators and pedestrians. Universal Safety Response can also provide additional information regarding safety and transportation warning devices that can be employed in association with the operation of the barrier systems not specifically described herein. It is strongly recommended that a traffic or safety engineer and or architect be consulted prior to the installation of the barrier system. Universal Safety Response does not offer engineering services for traffic or safety

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