RHD-Series: 500 & 1000 Specs

Series 500 Door:

The series 500 hangar door system allows for 2 inches up and 4 inches of down live load deflection of the roof

Series 1000 Door:

The series 1000 hangar door system allows any specified live load deflection of the roof

Provide an xx’-x” wide by xx’-x” high, x (x) door, electrically operated, in any of the following design requirements:  

 Part 1- Scope of Work:

1-1  Door System Option:

(A)   Floating Group,

Leaves are inter-connected to each other, but are not attached to the building in any way, and can open from either direction or move as a group abreast of each other. Each group of three or more leaves shall have a separate, traction-drive. Operating unit located in each end leaf of the floating group doors, which drives one or more wheels of the end leaf, and an interleaf pickup system. Movement of either end leaf shall allow stacking and unshackling of the other end and shall also allow intermediate leaves to move in concert. The group of leaves traveling abreast may then be positioned as desired in

The opening, Royal will provide necessary pickups, brackets, anchors, and miscellaneous hardware.

(B)   Bi-Parting door system:

Even numbers of leaves divided at the center with half of the leaves opening to the right jamb and the others to the left jamb.

(C)   Unidirectional Door System:

 Any number of leaves, all traveling to one side of the opening unidirectional leaves can be configured so that the jamb leaf is anchored at the building jamb, thereby limiting movement to open and close.

(D)   Independent Motor Operation:

 Independent-Or individually motor operated door system with any number of self-powered leaves, that can move freely to any position in the opening without reference to the jambs (pockets) or any other door leaf.

             (a)  Hangar Door Hardware:

Provide hangar door hardware to accommodate actual dead loads plus wind loads specified. Provide top guide rollers, bottom wheels, bottom rails, top guides, and door sections complete with  electric motor operator with a holding brake, electrical controls, draped cord electrical power feed or buss bar power feed, bracket door pick-up system, and weather seals. All steel is primer painted.

 1.1  Design Criteria:

The hangar doors shall be designed by manufacturer in accordance with the criteria specified. The top guide system shall be capable of accommodating specified live load positive and negative deflection of the roof in vicinity of the door opening

1.2  Submittals:

Design and submittal drawings shall be approved by the architect prior to hangar door fabrication.

Schematic Design, operation and maintenance manual shall be furnished to the owner.

1.3  Delivery, Storage and Handling:

Store delivered materials and equipment in dry locations with adequate ventilation, free from dust and water, and so as to permit access for inspection and handling.

Handle materials carefully to prevent damage.

1.4 Work by others:

 Includes preparation of the building to receive the hangar door, field wiring, field finish paint, top guide supports, and exterior and interior metal sheeting and insulation.

1.5  Warranty:

The door manufacturer shall provide a written guarantee against all defects in material and workmanship for a period of three (3) years from the date of acceptance (Option) A five (5) year warranty.

Part 2 – Products:

2.1 Manufacturer:

(A)  Hangar door shall be as manufactured by Royal Hangar Door, a division of Royal Overhead Door Inc. 10625 Otter Creek Blvd. P.O. Box 386 Mabelvale, AR. 72103.

2.2 Materials:

All door section framing members, both vertical and horizontal, shall be hot rolled standard structural steel sections equal to or exceeding ASTM A -36 and comply with AISC specifications. Cold formed “C,” “Z” shapes may not be used for girts or bracing.

   (a) Door section construction:

Door leaves shall be of welded or bolted construction. Joints shall

Develop 100 percent of the strength of the framing members. Vertical members shall be continuous throughout the height of the door. When required, prepare splices to facilitate field assembly in accordance with standard practice. Frames and framing members shall be true to dimensions and square in all directions; no leaf shall be bowed, warped, or out of line in the vertical or horizontal plane

 of the door opening by more than one mm in 2 meters 1/8 inch in 20 feet. Provide diagonal bracing so that the completed leaf assembly will be braced to withstand shipping, assembly and operational loads. Exposed welds and welds which interfere with the installation of various parts such as cover sheets shall be ground smooth.

2.3 Design Loading:

Design doors as a system to withstand an external wind load indicated for the builder and an internal wind load of not less than one-half of the external wind load. In both cases, the deflection shall not exceed the height of the door divided by 120. The deflection due to design wind load shall not exceed length divided by 120 for any door member. Fiber stresses due to combined dead load and wind

load shall not exceed the recommended design stresses for the material used and type of loading sustained.

2.4 Weather Stripping:

Provide adjustable and readily replaceable material. Provide [as indicated] [on vertical edges, sills, and heads] to afford a weather tight installation.  Neoprene, use flap-type, two-ply, cloth-inserted neoprene or extruded, double flap.  The two-ply material shall have a minimum thickness of 3 mm 1/8 inch and shall be retained continuously for its full length and secured with rust-resistant fasteners 300 mm 12 inches o.c. Extruded weather stripping with heavy center section shall be attached at 300 mm 12 inches o.c., but continuous bar may be omitted. Clearance between metal parts on vertical edges of leaves and between leaves and jambs which are to be weather-stripped shall be as indicated.

2.5 Hardware Assemblies:

      (A)  Provide top-roller assemblies to:

 Move up and down within the specified live load positive and negative deflection of the roof in the vicinity of the door opening; Allow easy removal from the top of the guide system; and include both 4 horizontal and 2 vertical rollers built into a frame which is connected in such a manner as to transmit the specified wind loads from the door to the hangar structure and to prevent disengagement of the door from the top guide.

(A)  Top Guide Assemblies:

 Top guide assemblies consisting of pre punched wide flange guide beams, crossbeams, clips and 14 gauge soffit closure plate shall be factory fabricated to accommodate the telescoping top roller assemblies and the designed building live load deflection and uplift.

(B)   Wheel Assemblies:

Shall be machined from solid steel having a minimum tread diameter as required for the actual wheel loading. Wheel assemblies to permit removal of the wheel without removing the door leaf from its position on the rail.  Machine wheel treads concentric with bearing seats. The clear distance between flanges shall not exceed the width of the rail by more than 3 mm 1/8 inch at the tread nor more than 6 mm 1/4 inch at the edge of the flange. Machine internal bearing seats accurately for a press fit. Heat treat wheels 450 mm 18 inches or greater in diameter to obtain a rim hardness of 320 Brunel.

(C)   Wheel bearings:

 Provide tapered roller or spherical bearings, either internal or cartridge type, arranged so that both horizontal and vertical loads shall be transferred to the rail only through the bearing. Bearings shall be tightly sealed and equipped with high-pressure grease fittings.

    (E). Bottom Rails:

Bottom rail shall be a minimum size of ASCE 20 lbs. /yd. leveling angle with anchors shall be provided. When rail drains are necessary for full length of bottom rails, this may be done with cross drains normal to the rails spaced about 6000 mm 20 feet o.c. emptying into continuous parallel floor drain in cold area.

  ( F) Bottom Rail Equipment:

It may be necessary to provide defrosting equipment below rails.

NOTE: Individually motor-operated doors and floating group doors should always be provided with

a trolley duct system to bring power to door leaves. Anchored group doors, if opening width is

not excessive, can be equipped with draped or festooned cables. If leaf width is wider than the height a trolley duct system should be used. Trolley duct systems should be specified to be furnished by door manufacturer but installed under elect cont in accordance with door manufacturer's drawings, only door manufacturer is properly qualified to know where to place trolley duct so there is adequate clearance and noninterference.

   2.6 Control Equipment:

      (A) Control Panel:

Equipped with access door-controlled, fused safeties disconnect switches. Variable speed drive shall be factory wired with overload and under voltage protection, control circuit power supply.

The control power supply shall reduce the voltage in the control circuits to 24 V DC, and shall conform to UL 506 Doors shall be controlled by constant pressure push buttons mounted on the door leaves. Removing pressure from the button shall stop the movement of the leaves.

      (B)The Control Equipment:

 Shall conform to NEMA ICS 12; interior push buttons shall be mushroom head type and mounted in heavy-duty oil-tight enclosures conforming to NEMA ICS 6. Type 13, except that enclosure for variable speed drive with disconnect switch shall be Type 12. [Exterior push buttons shall be in watertight enclosures conforming to NEMA ICS 6, Type 4.]  

(D)  Push Buttons:

For individually operated doors the leaves mounted on the outer shall have the buttons mounted on the interior face; and the leaves on the middle rails shall have the buttons mounted on both the exterior and interior faces. The button at each edge of a leaf shall allow the leaf to travel with that edge as the leading edge only. The controls shall not be reversible. Location of each control button shall be as indicated.  Push Buttons for Floating Group Doors: Each group shall be controlled by push button stations mounted at each end of each group of leaves. Stations shall contain one button for stacking the leaves, one button for unshackling the leaves. The leaves mounted on the outer rail shall have the push buttons mounted on the exterior face. The leaves mounted on the inner rail shall have the push buttons mounted on the interior.

 (E)      Trolley Duct:

 Provide one or more runs of trolley duct as required for the door system provided. Ducts shall have continuous solid copper conductors in a protective steel [or polyvinyl chloride] housing. Locate ducts as shown on door manufacturer's drawings. Provide adequate clearances in the top guide system for the ducts. Each run shall consist of the required number of sections of straight track, feed boxes, end caps, couplings, hangers, and other accessories to make the system complete and workable. Provide expansion tracks in each run where the system crosses a building expansion joint in the roof construction and in the top guides. Furnish one track-supported tandem trolley or single collector for each [individually motor-operated door] [group of doors], complete with spring-loaded brush contacts. Provide trolley pulling brackets and corrosion-protected chains attached from each side of the pulling bracket to each side of the tandem trolley or support bracket for self-supporting collector.

(F)    Braking System:

A holding brake shall be designed to ensure the doors will not move after they have come to a stop. The brake is not used for stoppage of the door. The braking system shell is magnetic, spring-set solenoid-released brake type. Provide a hand release to release the brake when it becomes necessary to move the leaf with an outside force. The brake shell automatic reset so that it will be operable during normal electrical operation.

(G)  Limit Switches:

Provide limit switches to prevent over travel and bumping.

(H)  Door Operation:

Doors shall be controlled by constant pressure push buttons. Removing pressure from the button shall stop the movement of the leaves. When the open or closed push button is pressed the horn will sound for 3 seconds before the leaf will move and while the leaves are moving. At the time of moving the drive leaf will run at half speed for 3 seconds then ramp up to full speed. At 4 feet before and after picking up the next leaf the drive will slow down to half speed, then ramp up to full speed. At 4 feet before full open or closed position the drive leaf will slow down to half speed before stopping.

     2.7 Warning Device:

Provide a clearly audible signal on each [individually operated leaf] [group of leaves]. The warning device shall:  operate when the push button is actuated for movement of the door in either direction,

an sound for 3 seconds before the door moves, and while the door is moving. A 108 decibel-rated horn (at 1 meter) shall be supplied. Location of each control station shall be shown on manufacturer’s drawings.

      2.8 Painting:

Clean all steel surfaces after fabrication. Paint all steel surfaces with a standard primer.

 Part 3 – Execution:

3.1  Emergency Operation:

Hangar doors [, including tail doors,] shall be constructed and equipped so that they can be operated-manually or by tractors from the hangar floor in case of power failure. Manual operation of hangar doors shall be designed to avoid damage to safety edges.

3.2  Location and type of personnel doors:

 Do not locate personnel doors between wheels and edge of hangar door leaf. Exact location to be determined by structural design of door leaf.  Wind loads on both sides of doors and positive and negative deflection of top guides due to live loads. Door and hardware by others

    3.3 Interlock Switch:

 Provide an electrical interlock switch to prevent motor operation of the leaf or group in which it is located when the personnel door is open. Provide an identified indicator light at each door leaf control station indicating when the personnel door is in the open position.

   3.4 Installation:

Assemble and install the bottom rail assemblies, top guide assemblies and door sections in accordance with approved drawings and installation instructions.

Part 4 – Options:

    4.1 Safety Edges

Provide fail–safe safety edges on (each edge of each leaf of individually operated doors) (each leading and trailing edge of drive leaves for floating group doors). 

 Operation: Actuation of the safety edge on leading edge of a group of leaves shall stop movement                  of the group. Actuation of a safety edge shall lock out the motor control in the direction of travel, but     shall permit the door to be reversed away from the obstruction which tripped the safety edge.    

   4.2 Linear Cable System:

All leafs are interconnected with a wire cable.  When the drive leaf move all other leaf shall move at the same time at deference speeds and get to the open or closed position at the same time.

(A)   Cable shall be 3/8 inch, 6-36 wire rope cable.

(B)   Cable and sheaves shall not be exposed to the exterior

(C)   Maine sheaves shall have a diameter of at least 18 cable diameters and machined from sold steel. Cast steel or powder metal sheaves may not be used

(D)  Graphite bronze bushing of a sufficient capacity shall be use