SOLICITATION NOTICE
66 -- HEAVYWEIGHT DEFLECTOMETER HWD
- Notice Date
- 9/6/2005
- Notice Type
- Solicitation Notice
- NAICS
- 334519
— Other Measuring and Controlling Device Manufacturing
- Contracting Office
- Department of the Air Force, Air Education and Training Command, Tyndall AFB Contracting Squadron, 501 Illinois Ave, Ste 5 Bldg 647, Tyndall AFB, FL, 32403-5526
- ZIP Code
- 32403-5526
- Solicitation Number
- Reference-Number-FA4819-09-11-12
- Response Due
- 9/9/2005
- Archive Date
- 9/24/2005
- Small Business Set-Aside
- Total Small Business
- Description
- Heavy weight Deflectometer with spares kit, tool kit, spare deflectors and spare deflector holder, survey grade GPS capability, video system for load transfer testing, hinged trailer, and trailer mounted generator system that meets technical specification as outlined below: PERFORMANCE SPECIFICATIONS HEAVY WEIGHT DEFLECTOMETER PAVEMENT DEFLECTION TEST DEVICE 1.0 GENERAL QTY: 1 EA 1.1 This specification applies to a device used for the determination of pavement deflections as a result of applying an impulse load to the pavement surface. The resulting deflections, measured at the center of the applied load and at distances away from the load, are used to determine the material properties of the pavement layers and measure deflection transfer across joints in portland cement concrete pavements. Data are used to structurally evaluate the load-carrying capacity and overlay thickness requirements for highway and airfield pavements. 2.0 DEVICE DESCRIPTION 2.1 General. The device shall impart a force pulse generated by a weight dropped on a buffer system that is transmitted through a circular plate resting on the pavement surface. The pavement loading device shall be a trailer mounted Heavy Weight Deflectometer (HWD). The unit shall be of durable construction and be stable when towed at highway speeds on normal roads. The tow vehicle is excluded from this specification. The producer of this device must have demonstrated proven production experience of a device of this type. A reference list with complete names, addresses, and telephone numbers of at least five (5) different active owners/agencies residing in the united States who purchased directly from the manufacturer and who own the same model of the manufacturer's equipment, including their relevant representative and with at least three (3) having the identical base equipment, shall be provided by the manufacturer to ascertain quality assurance, and to indicate the capacity of the manufacturer to deliver and support equipment exactly to these similar specifications. The manufacturer of the device shall have a full parts inventory and established service network, including a well established record of equipment support in the United States, verifiable through the above reference list. 2.1.1 The following operations will be preprogrammed and performed automatically from controls located within the towing vehicle. The plate and deflection sensors will be lowered to the pavement. The weight shall be raised to the height that, when dropped, will impact the desired force to the pavement. The weight shall be dropped and the resulting vertical movement or deflection of the pavement surface shall be measured with instrumentation described below. The apparatus shall then be raised for movement to the next test site. 2.1.2 The peak deflection of the pavement at each measuring location resulting from the first force pulse will be recorded in mils (0.001 inch). 2.1.3 The peak force imparted by the falling weight will be measured and recorded as pounds force (lbf). 2.2 General Requirements for Measuring System. The instrumentation system shall conform to the following overall requirements which shall be tested and approved prior to delivery: 2.2.1 Instrumentation that is exposed to the elements (outside the vehicle) shall be suitable and operable in the temperature range of 10 to 120 degrees F (-12 to 49 degrees C) as a minimum. 2.2.2 Instrumentation that is not exposed (i.e., inside the tow vehicle) shall be suitable and operable in the temperature range of 40 to 105 degrees F (5 to 40 degrees C) as a minimum. 2.2.3 The exposed portions of the system shall tolerate relatively high humidity as well as rain or spray and all other adverse conditions such as dust, shock, and vibrations that may be normally encountered. 2.2.4 The system shall have an independent power generation system mounted on the trailer allowing the unit to operate independent of any external power source. 2.3 FORCE-GENERATED DEVICE 2.3.1 The force generating device (i.e., the falling weight) shall be capable of being raised to anyone of four operator preselected adjustable heights and dropped. A preprogrammed test will consist of at least eight drops at any combination of the four heights. The resulting force pulse transmitted to the pavement should be reproducible. The force pulse shall approximate the shape of a haversine or half sine. The force pulse duration should be in the range of 20 to 60 milliseconds or the "rise time" in the range of 10 to 25 milliseconds. Peak force range will be from 7,000 lb force to 52,500 lb force. The maximum force output will be at least 52,000 lb. 2.3.2 The guide system shall be designed to operate with negligible friction or resistance and shall also be designed so that the weight falls perpendicular to the pavement surface. The loading plate shall be swivel-suspended to allow for a tilt in any direction of 5 degrees minimum from the horizontal plane. 2.3.3 The pavement loading device shall be equipped with a hand pump so that the loading plate/falling weight/deflection transducer bar subassembly may be raised for removal of the equipment from the place of use in an emergency or if the electro-hydraulic system fails. 2.3.4 All metal parts on the pavement loading device, including electric and hydraulic lines, shall be corrosion resistant by either being plated to provide galvanic protection or painted with primer and then enamel. 2.4 Loading Plates. The loading plate used to transmit the applied force of the pavement shall be capable of approximating a uniform distribution of the load on the pavement surface. Loading plates will be furnished that are 300 mm (12 in) and 450 mm (18 in) in diameter. The plates shall be open in the center to allow a deflection measuring sensor to be installed. 2.5 SYSTEM CONTROL AND DATA HANDLING 2.5.1 The system shall include all necessary software to conduct full operation from the keyboard of a microcomputer. Appropriate software shall be provided for checking and editing of field data. The software shall be fully compatible with IBM-PC computers. 2.5.2 Data Processing and Storage. The measured deflection data and supporting information, including pavement surface temperature, distance, date/time and identification data for each test point, shall be displayed on the computer screen and can be stored on magnetic storage device or a paper strip or both if selected by the operator. 2.5.3 The System Software shall be able to run in a Simulator Mode (with or without having the pavement loading device connected), being able to simulate all System functions, making it usable for detailed operation training/demonstration on the System microcomputer or on any other compatible PC. 2.6 INSTRUMENTATION 2.6.1 Deflection Transducers. Velocity transducers used to measure the deflection shall be of such design as to measure the vertical movement of the pavement. A minimum of seven velocity transducers shall be used for deflection measurements. One transducer shall be mounted through a hole in the center of the load plate and shall rest on the pavement surface for measurement of deflection at the center of the applied load. The other transducers shall be mounted in a continuous line extending in one radial direction from the loading plate and in line with the center of the trailer and beneath the trailer. These six transducers shall be adjustable to any desired spacing to distance of at least 8 feet from the center of the loading plate. The transducers shall be mounted in such a manner as to minimize angular rotation with respect to its measuring plane at the maximum expected movement. The transducers shall be shock resistant to accelerations experienced during normal transportation over paved and unpaved road ways and water proof to a five foot depth of water. Linear voltage differential transformers are not acceptable substitutes for the velocity transducers. 2.6.2 A load cell shall be used to measure the applied load on each impact. It shall be placed in a position to minimize inertial effects. The load cell design shall permit deflection measurements at the center of the load plate. The load cell shall be resistant to the mechanical shocks from road impacts, and shall be water proof to a five foot depth of water. 2.6.3 A trigger device shall be furnished which activates the sensing equipment immediately prior to initial impact of the falling weights in order to insure proper registration of the actual quantities of load and deflection. If any error is present or forthcoming in these values during testing, such an error shall be detectable from either the computer display prior to release of the weights or from the data file (e.g., in the form of warning flags) subsequent to resting. 2.7 SIGNAL CONDITIONING AND RECORDER SYSTEM 2.7.1 The load measurements shall be accurate to at least +/- 2% or +/- 36 lbf, whichever is greater; and when recorded, the minimum resolution shall not be more than 16 lbf when using the 300-mmdiameter loading plate or not more than 36 Ibf when using the 450mm-diameter plate. 2.7.2 The deflection measurements shall be accurate to at least +/- 2% or +/- 0.10 mils, whichever is greater; and when recorded, the minimum resolution shall not be more than 0.05 mil. Deflection sensors shall be accurate to these tolerances and measure deflections to at least 80 mils. 2.7.3 The device, shall meet the load and deflection accuracy requirements as defined by the Strategic Highway Research Program (SHRP) FWD absolute dynamic reference calibration and relative calibration verification procedures, and shall be capable of performing these procedures upon delivery if taken to a SHRP FWD calibration site. 2.7.4 The accuracy stability shall remain as specified regardless of the pavement materials upon which testing is carried out (eg, will not require electrical deflector gain or other physical modifications "recalibration" from one pavement type to another), nor will it be influenced by changes in the deflector distances from the center of the load within specifications shown. 2.8 Video System. A video system shall be provided for operator assistance in PCC joint testing and equipment operator monitoring. It shall include a multiple auto-focusing camera and high resolution monitor. In design it should be compact, weatherproof, and mounted for shock resistance. 2.9 Automated Surface Temperature unit. A temperature sensor shall be mounted on the trailer for measuring the pavement surface temperature. The temperature data shall be recorded automatically for each test location with deflection and force data. 2.10 Manuals. Two sets of commercial operations and maintenance manuals per item shall be furnished that include appropriate wiring diagrams and trouble shooting, setup, and calibration procedures. 2.11 Spare Parts. Spare parts shall be furnished to include one load cell, two deflection transducers, one deflection transducer holder, proximity sensors (one each of all types), pressure switches (one each of all types), and electronic relays (one replacement for each that is used). 2.12 Toolkit. The contractor shall provide a tool kit with sufficient quantity, quality and type of tools to perform maintenance in the field of the deflectometer and trailer to include the ability to change loads cells, transducers (deflectors) and deflector holders 2.13 Survey grade global positioning system. The contractor shall provide a system that incorporates a survey grade global positioning system with the unit. The GPS unit shall be incorporated such that output from the system can include deflection data as well as data from the GPS in the same file. 2.14 Data output: The data collection system shall create an electronic file on a system containing media that can transfer data files to other MS Windows based systems. The output file shall be compatible with the current version of PCASE and be able to be utilized by PCASE. 3.0 TRAILER 3.1 The test apparatus shall be furnished on a two-wheeled trailer. The trailer shall have an inertial brake system. Turn signal and brake lights will be mounted on the trailer rear. Connections shall be provided for connecting lights to the tow vehicle light circuits. For safety, the trailer design will be such that it will not require any auxiliary support for stabilization during testing other than being connected to the towing vehicle. An adjustable tongue jack will be provided at the front of the trailer for use when separated from the towing vehicle. The trailer dimensions shall not exceed maximums of 206 x 80 58 inches (L x W x H) either in the transport or testing mode. Tires shall be size LT235/85R16, 10 ply rating with a load range "E" of 3042 lbs each. 3.2 Manufacturer shall install restraint devices. Devices shall be in compliance with MIL-STD-209H. Restraint provisions must be in sufficient number and location to restrain the unit to the requirements of MIL-STD-1791, i.e., 3G forward, 2G vertical, and 1.5G aft and lateral. In addition, all stored or installed equipment must meet these requirements and all components must be capable of withstanding a vertical acceleration of 4.5 Gs. End Specification
- Place of Performance
- Address: HQ AFCESA/CESC PAVEMENTS TEAM, Tyndall AFB, FL
- Zip Code: 32403
- Country: USA
- Record
- SN00887035-W 20050908/050906211838 (fbodaily.com)
- Source
-
FedBizOpps.gov Link to This Notice
(may not be valid after Archive Date)
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