SOURCES SOUGHT
Z -- Repair and Replace Tail doors on hangers 601 and 603 at Grand Forks AFB North Dakota
- Notice Date
- 1/10/2002
- Notice Type
- Sources Sought
- Contracting Office
- Department of the Air Force, Air Mobility Command, 319 CONS, 575 6th Ave, Building 418, Grand Forks AFB, ND, 58205
- ZIP Code
- 58205
- Solicitation Number
- Reference-Number-FQ465913380100
- Response Due
- 1/18/2002
- Archive Date
- 2/2/2002
- Point of Contact
- Jennifer Richardson, NCOIC, Services Flight, Phone (701) 747-6229, Fax (701) 747-4215, - Duane Mann, Chief, Construction Flight, Phone 701-747-5266, Fax 701-747-4215,
- E-Mail Address
-
jennifer.richardson@grandforks.af.mil, Duane.Mann@grandforks.af.mil
- Description
- Grand Forks AFB intends to purchase/install 2 overhead hoist up fabric doors through a GSA contract. Pending that decision, sources are sought who can furnish the same product equal to Megadoor. Interested sources should review the specification in detail and responde by e-mail to jennifer.richardson@grandforks.af.mil furnishing information as described in paragragh 1.3 of the included specificaiton. Pending response, an open market solicitation may or may not be issued. SPECIFICATION FOR OVERHEAD HOIST-UP FABRIC TAIL DOOR PART 1 - GENERAL It is the intent of this specification to identify the nature of the required door and to define the minimum standards for the quality, construction, and operation of the required door. Minor variations, in accordance with standard practice, shall be indicated on shop drawings and submitted for approval. 1.1 CODES AND STANDARDS: The following standards form a part of this specification to the extent referenced. References in the body of this specification are by basic designation only. 1.1.1 American Society for Testing and Materials (ASTM) 1.1.2 National Electrical Manufacturer's Association (NEMA) 1.1.3 Underwriters Laboratories, Inc. (UL) 1.1.4 BG - Prufbescheinigung 97060 (Certification of safety arrestors,BG-P) 1.2 QUALITY ASSURANCE: The material, construction, and operation of the door shall conform to the performance specifications contained herein. Approved manufacturer is: Megadoor, Inc., P.O. Box 2957, Peachtree City, GA 30269; Telephone: 770-631-2600, Fax: 770-631-9086 or approved equal prior to bid. 1.3 MANUFACTURING AND INSTALLER QUALIFICATIONS: 1.3.1 The overhead hoist-up fabric doors shall be the product of a manufacturer who has had at least twenty years experience in design, fabrication, erection, and service, and who is regularly engaged in the manufacture of the type of door specified herein. Only manufacturers who can submit evidence of actual installations of comparable design and construction, and that the products have proven practical, durable, and requiring a minimum of maintenance, will be qualified under this specification. 1.3.2 Installation of the doors shall be by an authorized representative of the door manufacturer and shall be in accordance with approved shop drawings. Mechanics shall be skilled and experienced in the erection of large hangar doors of the type specified herein. 1.4 DESIGN REQUIREMENTS: 1.4.1 Tail Door Design: The manufacturer shall design the door in accordance with the criteria specified herein. Doors shall operate properly without binding, interference, or damage to the adjacent structure. 1.4.2 Wind Load: The Tail Door shall be designed to withstand a wind pressure of 25 psf acting alternately inward and outward. 1.4.3 Tail Door Speed: Door shall open at a rate of at least 12 inches/second. 1.4.4 Tail Door Weight: The tail door manufacturer shall provide load diagrams of the doors in the closed and open positions. Details shall also be provided showing clearance and attachment requirements for coordination with the structural steel and miscellaneous steel shop drawings. 1.5 SUBMITTALS: 1.5.1 All required submittals shall be made to the General Contractor. 1.5.2 Shop Drawings: Submit design drawings in CAD.PLT format detailing tail door characteristics including size, clearances, and load diagrams; construction details for jamb, head, sill; material types, sizes, shapes, thickness', joints and connections; hardware, safety devices, and mechanical device descriptions including motor sizes in HP, voltage, phase, and hertz; location of control panels and drive units; and all design and detail data for work of other trades affected by the installation of the overhead hoist-up fabric tail door. 1.5.3 Samples: Submit color samples of panel fabric for approval. 1.5.4 Operating Drawings and Instructions: Furnish the following in duplicate at the completion of the installation: 1.5.4.1 Assembly drawings and wiring schematics for tail doors. 1.5.4.2 Complete manufacturer's manuals containing instructions for operation and maintenance of tail doors. 1.6 DELIVERY AND STORAGE: Delivery of materials shall be in original rolls, packages, boxes, or crates bearing the manufacturers name, brand, model number, and installation location. Store all materials in dry locations with adequate ventilation, free from dust and water, and available for inspection and handling. Handle tail doors carefully to prevent damage. Remove damaged items that cannot be restored to like-new condition and replace with new items. PART 2 - PRODUCT 2.1 TAIL DOORS: 2.1.1 Tail door Fabric: The fabric material shall be a one piece heavy duty vinyl coated polyester fabric weighing approximately 19-22 ounces per square yard, capable of carrying 250 pounds per inch per panel. It shall be UV stabilized, self extinguishing (0-25 flame spread), and suitable to withstand temperatures between +158 to -31 degrees F. The fabric shall be attached to both sides of the intermediate beams, top beam, and bottom beam with self tapping screws through corrosion resistant aluminum batten strips. The fabric shall have been tested to meet the criteria of ASTM E-84-94 (flame spread - Class A interior wall and ceiling finish) and ASTM-D-1790 (cold cracking, brittleness and temperature). 2.1.2 Tail door Beams: The intermediate beams shall be corrosion resistant extruded aluminum, tempered after the extrusion process to ensure required strength and have a length to depth ratio not to exceed 100:1 to meet the required wind load. Intermediate beams over 55'-0" long shall have a box type web to ensure torsional strength. They shall be spaced 3-6 feet apart, dependent upon the wind load. At each end of the beams there shall be a guide block of self-lubricating nylon material, or rollers that run along the guides. 2.1.3 Tail door Guides: The vertical guides shall be an integral part of the tail door, made of extruded aluminum with a suitable depth and width dependent on the size of the intermediate beams. The guides shall be designed to provide weather-sealing on the inside and the outside faces. The guides shall be designed to provide sufficient strength to transfer the wind load and safety arrestor forces from the tail door beams, at maximum wind load, to the jamb steel support system. The guides shall be easily replaceable in case of damage. The installer shall furnish jamb structural steel fasteners of size and type required for attachment of the guide rails as shown on the approved shop drawings. 2.1.4 Drive Units: The tail door leaves shall have a UL/CSA labeled single or dual motor drive system with torque sized as appropriate for the weight of the tail door leaf and associated loads. The gear motor shall be equipped with a drum on which the polyester belt or steel cables are wound. If a single motor drive is used, the belt/cables shall be wound on the same drum. The belts/cables shall be attached to the bottom beam via the safety arrestors. A hand crank shall be supplied which fits on the motor for manual operation of the tail door in the event of a power failure. The gear motor shall be removable without disturbing the limit switch adjustment. 2.1.5 Belt/Cable System: A maximum of two belts/cables per tail door, running inside the tail door guides, shall be used to transmit motive force to the tail door unit. Similarly, the quantity of sheaves used to guide the belts/cables shall be minimized to reduce maintenance requirements and spare parts inventories. Belts/cables shall be installed free of any kinks and the system design and sheave diameter shall be such to prevent the occurrence of any kinks or abnormal stress in the operating belts/cables. Where belts/cables pass through openings in the building structure the openings shall be constructed so as to prevent abrasion, wear, or damage to the belts/cables. Sheave units shall be installed in accessible locations which allow inspection and preventive maintenance. Sheaves shall not be located in enclosed locations which are not readily accessible for visual inspection. 2.1.6 Safety Arrestors: Each tail door leaf shall be supplied with two safety arrestors which activate and support the tail door in the event a belt or cable should break. Each safety arrestor type shall be tested to the standards established by TUV-control (BG-P) for the required tail door leaf weight and hold a valid certificate. A copy of the certification shall be a requirement of the submittals. The moveable mullions, when provided, shall be provided with a lifting motor which has internal safety devices to prevent overload incase of obstruction as well as to prevent the mullion from falling in case of motor or primary brake failure. 2.1.7 Slack Belt/Cable Breaker: A safety device shall be used on all tail door leaf belts/cables which will sense a slack belt/cable condition and cut power to the appropriate drive unit to prevent an unsafe condition. 2.1.8 Bottom Beam: The bottom beam shall be designed with a suitable width and depth to carry the load of the intermediate beams when the tail door is open, and to ensure full closing and a tight seal in heavy winds. A heavy U-shaped bottom rubber seal shall be provided to form a tight seal with the main hanger door. 2.1.9 Wind Lock: Each tail door leaf shall be provided with two wind locks which activate and lock the bottom beam when the tail door reaches its closed position. This locking action shall act to maintain a tight seal and intermediate beam stability even under conditions of heavy wind. 2.1.10 Deleted. 2.1.11 Header Box: Header boxes, when provided, shall be constructed of carbon steel and factory primed with rust inhibitive paint. 2.1.12 Control Panel: The tail door manufacturer shall supply control panels for installation by the electrical subcontractor to operate the tail door units. The control panel shall contain devices to control the logic and sequence of tail door and main door operation to insure safe operation. The control panel shall also contain interlocks to preclude personnel injury, including an interlock between the power supply system and use of the hand crank for manual operation of the tail door unit. The control panel and remote push button station shall be mounted a minimum of 48" above the floor. The control panels shall be NEMA 4 or NEMA 12. 2.2 OPERATION: 2.2.1 Tail door Operation: The overhead hoist-up fabric tail door shall guide up and down in the weather sealing vertical guides attached to the structure. The tail door shall operate by lifting the bottom beam upwards, thereby stacking the intermediate beams one on top of the other, with the fabric panel folding in pleats. The fabric panel shall go over the top beam, covering both sides of the tail door, and shall be attached to the intermediate beams by screws and batten strips. When the tail door is fully closed, the intermediate beams shall hang between the two fabric tail door panels thus pulling the fabric tight. The tension created in the fabric panels shall stabilize the intermediate beams. The safety arrestors shall be attached to each end of the bottom beam and shall travel in the vertical guide tracks. The safety arrestors shall immediately stop the downward movement of the tail door in case of belt/cable failure. 2.2.2 Electrical Operation: When the tail door is completely opened it shall stop on the primary top limit switch. In case of over travel, a secondary limit switch shall cut off the drive unit's motor current to prevent damage. These two limit switches shall be activated by the uppermost intermediate beam. The drive unit shall be stopped by the slack belt/cable breakers when the tail door is closed. The slack breakers shall also stop the tail door in case of belt/cable rupture or if an obstruction should prevent the tail door from being closed. The slack breakers shall be activated by weight or springs. The control panel station and remote push button station located at the opposite side of the hangar shall be of the push button type. The tail door operation shall be controlled by two buttons marked "Open", and "Close. They shall be controlled by constant pressure to open and constant pressure to close. Removing the pressure from the open or close button shall stop the motor drive and set the brake. The tail door manufacturer shall provide a NEMA enclosure which is factory wired and equipped with instantaneous overload relays. PART 3 - EXECUTION 3.1 PROTECTIVE COATINGS: 3.1.1 Cleaning: After fabrication, clean all metal surfaces thoroughly of all mil scale, rust, oil, grease and other foreign substances. Apply rust-preventive primer to all steel parts immediately after cleaning. 3.1.2 Shop Painting: After cleaning, coat with primer all steel surfaces other than machine-finished parts. Keep paint off finished bearing surfaces. Before assembly, prime surfaces that will be inaccessible after assembly. Handle painted material with care to avoid scraping or breaking the protective film. 3.2 ERECTION: Do not erect tail door until the work of other trades in preparing the opening has been completed and the hangar roof is completed and under full dead load. The structural steel erection sub-contractor shall adjust the collateral steel for the tail door to the proper line, gage, and elevation in accordance with the approved tolerances on the drawings. Any discrepancies in the prepared opening shall be brought to the attention of the General Contractor before beginning the tail door installation. 3.2.1 Building Power: If permanent electrical power is not available when the tail door is being installed, the General Contractor under Section 5 - Statement of Work, Power Outages, shall make provision for and obtain a temporary source of electrical power to allow the tail door manufacturer to install, test, and adjust the tail door under power. 3.2.2 Electrical: All conduit, wire, junction boxes, accessories, and all labor to wire and connect to and between all electrical equipment on or for the tail door shall be installed in accordance with the tail door manufacturer's approved wiring diagrams and the Electrical Section of this specification. The electrical control equipment will be furnished by the tail door manufacturer. All conduit, wire, accessories, fused disconnect switches, and labor will be supplied by the Electrical Section. The electrical wiring of the tail door shall be coordinated with the installer during installation. 3.2.3 Assembly: Assemble and install the tail doors and accessories in accordance with approved shop drawings. After erection is complete and before field painting is applied, thoroughly clean all abraded surfaces, field welds, and field bolts; coat with primer paint. 3.2.4 Cleaning: Clean tail doors after erection on both interior and exterior. 3.2.5 Testing: Immediately after the tail door installation is completed, the tail door manufacturer or his representative shall perform a complete operating test in the presence of the Contracting Officer, Architect and/or the Owner's Representative. Correct all defects disclosed by the test. Re-test the tail doors and adjust until the entire installation is fully operable and acceptable. 3.3 TURNOVER: 3.3.1 A tail door fabric patch kit shall be supplied with approximately 30 square feet of fabric and all other materials required for tail door panel repair. 3.3.2 A training session shall be provided for the tail door operating personnel and maintenance department. The training shall outline tail door operation, troubleshooting, and repair guidelines.
- Place of Performance
- Address: 319th Contracting Squadron, 575 Tuskegee Blvd, Grand Forks AFB ND
- Zip Code: 58205
- Country: USA
- Zip Code: 58205
- Record
- SN20020112/00013452-020111090538 (fbodaily.com)
- Source
-
FedBizOpps.gov Link to This Notice
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