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VERTICAL LIFT STRAP BIFOLD HANGAR / HYDRAULIC "ONE-PIECE" DOORS |
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1. QUANTITY |
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| 1.1 | Doors for this project will consist of (___) bifold / hydraulic One-Piece® doors | ||
2. SIZE OF DOOR - Clear Open Width & Height |
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| 2.1 | Hanger door with door in up position, shall have a minimum clear opening width of (___'____") as shown in the plans and a minimum clear height of (___'____") above finished floor elevation. | ||
3. PLACEMENT of the Bifold / Hydraulic Doors onto the building - Choose One |
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| + | 3.1 | Door shall be mounted on the exterior walls of building. | |
| + | 3.2 | Door shall be mounted flush with exterior walls of building. | |
4. GENERAL / CONTRACTORS REQUIREMENTS: - DESIGN CRITERIA |
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| 4.1 | The bifold hangar / One-Piece® hydraulic doors shall be designed to the same loading requirements for live, dead and windloads as the hangar building. | ||
| 4.2 | The doors shall be engineered to resist all anticipated loads without sagging, bowing or conflicting with its smooth and efficient operation. | ||
| + | 4.3 | Design for windload as required by UBC, 2000 International Building Code & 1999 Standard Building Code (ASCE 7-98). (Example) Windload (___) mph. Exposure (___). | |
| 4.4 | The design shall be furnished, approved and sealed by a professional engineer registered in the state where the project is located. | ||
| 4.5 | The building header shall be designed to accommodate horizontal and vertical building deflections to support the bifold / One-Piece® hydraulic door in all positions (with the proper lateral bracing) | ||
| 4.6 | The building's door columns shall be framed of the proper design and size to reinforce the opening (with lateral bracing) and to carry all loads and vibrations imposed thereon. | ||
| 4.7 | The bifold / One-Piece® hydraulic door should have solid footing with sill directly underneath the doorframe and extending outward from the door to provide a base for the door's weather seal. This also prevents flow of water into, or under, the door installation. | ||
| 4.8 | The finished floor of the building should be designed to prevent flow of water under the door installation. Sills shalll have a slight slope outward of the bifold / One-Piece® hydraulic door to prevent water flow under the door installation. | ||
5. GENERAL / ELECTRICAL REQUIREMENTS: |
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| 5.1 | The building contractor shall furnish and install a prewired electrical door operating mechanism to control each bifold / One-Piece® hydraulic door. | ||
| 5.2 | The contractor is responsible and required to completely install the prewired electrical door operating mechanism, push button controls, devices and electrical conduit and wiring to the door operating controls. | ||
| 5.3 | Control panel with up/down/off switch pre-wired to motor, and over-ride controls with the required number of adequately sized insulated electrical conductors. | ||
6. GENERAL / Electric Power Operator: For the Bifold / Hydraulic Doors |
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| 6.1 | All electrical controls and devices shall conform to the requirements of the current National Electrical Code 513, NEMA, and be UL approved. | ||
| 6.2 | The operator is furnished complete details, consisting of a motor and factory-wired control panels consisting of main-fused disconnect switch, magnetic reversing starters, limit switches and pushbutton controls, control circuit transformers, relays, timing devices, and warning devices. | ||
7. LIFTING METHODS - CHOOSE ONE |
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| + | 7.1 | LIFT CABLES | |
| A. | Cables shall be manufacturer's standard adequately sized aircraft galvanized steel type lifting cables and lifting drums in sufficient amount to give 5:1 safety factor. | ||
| B. | The lift drums must be properly shielded to avoid any potential hazards to people. | ||
| + | 7.2 | LIFT STRAPS | |
| A. | The door power unit shall be operated by a system of lifting straps (NOT CABLES), lifting drums and driveshafts. | ||
| B. | The Lift Straps shall have adjustable slack take-up device to keep proper tension on each Lift Strap | ||
| C. | The lift drums must be properly shielded to avoid any potential hazards to people. | ||
| D. | Lift Straps and Lift Drums shall be manufacturer's standard adequately sized in sufficient amount to give 5:1 safety factor. | ||
| + | 7.3 | LIFT CYLINDERS - Hydraulic Doors | |
| A. | The door power unit shall be operated by a system of HYDRAULIC CYLINDERS that raise and lower the hydraulic door. | ||
| B. | Hydraulic Lift Cylinders shall be manufacturer's standard adequately sized in sufficient amount to give 5:1 safety factor. | ||
Note: This is a sample copy of specifications. For details partaining to a specific bifold or hydraulic door, please call us toll free at 800-746-8273 or email us at schweiss@schweissdoors.com
