Door assembly

Standard Methods of Fire Tests of Door Assemblies, Standard E 252, National Eire Protection Association, Quiacy, Mass., 1995. 

Standard Methods of Fire Tests of Door Assemblies, 1990 (similar to ASTM E-152). Standard Method of Test for Critical Radiant Flux of Floor Covering Systems Using a Radiant Heat Source Energy Source, 1990 (similar to ASTM E 648). 

Any opening in a fire barrier is a potential weak point. It is advisable to minimize the number of openings. All openings in fire barriers should be provided with fire door assemblies, fire dampers, penetration seals (fire stops), or other approved means having a fire protection rating consistent with the designated fire resistance rating of the barrier. 

Where water will create a serious fire or personnel hazard, a suitable nonwater automatic extinguishing system should be considered. Penetrations through fire-rated floor, ceiling, and wall assemblies by pipes, conduits, bus ducts, cables, wires, air ducts, pneumatic tubes and ducts, and similar building service equipment should be protected in accordance with NFPA 101 , Life Safety Code. All floor openings should be sealed or curbed to prevent liquid leakage to lower floors. Door assemblies in 1 -hour rated fire barriers should be y4-hour rated. Door assemblies in 2-hour rated fire barriers should be 1 V2-hour rated. 

NFPA 252 Standard Methods of Fire Tests of Door Assemblies... 

NFPA 288 Standard Methods of Fire Tests of Floor Fire Door Assemblies Installed Horizontally in Fire Resistance-Rated Floor Systems... 

Protection at non-personnel opening moy consist of overheod fire shutter, horizontal sliding fire door or other rated fire door assemblies that are listed for opening protection. 

Where the authority having jurisdiction or insurance carrier requires rated door assemblies on each side of the fire woll, personnel doors may be installed in a vestibule arrangement. 

Underwriters Laboratories Inc., Fire Tests of Door Assemblies. UL 10B, Standards for Safety, September 28, 1992. 

Ignition components vertical body panels door assemblies... 

Figure 4.17. Swing door assembly. [Adapted Figure 4.18. Details of the seal. [Adapted from from Kellogg, C. F. Dietrich, A. T, US Patent Kellogg, C. R Dietrich, A. T., US Patent...

Door assembly Frame type, card plate type door lock, hinge type hinges, with side protection rod, four side doors open outwards by turns, rear door open upwards. Centralized controlled door lock, electric drive glass frame riser... 

The fourth closed loop defines the relationship between the number of pallets with car doors in different subassembly states and the number of pallets of cars with disassembled doors using an external variable (x), according to (30.4). This variable represents the four-door car ratio between the door disassembly stations, located at M2 and the door assembly stations, located at M4. This variable can have values between 0 and 1. 

NFPA 105 Standard for the Installation of Smoke Door Assemblies... 

Door assemblies shall be tight-fitting smoke and have draft... 

White 30 Intumescent seals are required as part of the door assembly at the time of installation. 

Door furniture Hinges that a fire door is hung on should display a CE mark and should normally be made of a material that has a melting point above 800°C. Locks handles, etc. should not be so fitted as to compromise the integrity or stability of the door assembly. 

Therefore all dead-end corridors that are longer than 2 metres must be constructed of fire resisting construction Including doors and door assemblies that provide at least 30 minutes fire separation. 

The process of building door assemblies requires the application of a structural adhesive to the outer door panel. The next step in the assembly of doors is the joining of the inner and outer panels. Finally, a hemming die is used to turn a small section of the outer panel over the inner panel to form a hem. Accurate bead placement and uniform material deposition are critical to achieve a structural bond. These requirements, combined with high production speeds, make hem flange bonding well suited for robotic automation. Fig. 11 depicts the entire door assembly line process complete with hemming die and induction cure fixture. The induction cure fixture applies localized... 

Fig, 11. Typical door assembly line at a stamping plant or in the body shop of a final assembly plant. 

Robotic sealing in the body shop, like seam sealing and door assembly, is performed to seal out dust and moisture while protecting weld locations from corrosion due to the galvanization being burned off. The bead dispensed is nominally a 0.160-0.200 in. diameter, at velocities that approach 20 in./second. The robotic systems used in this system are similar to Fig. 1. 

The principal application for adhesives is the bonding of bonnet, boot lid and door assemblies, with a small use of structural adhesives in the highly stressed areas to distribute loads throughout the joint area and increase the torsional stiffness of the assemblies. The bonded areas in the car body are illustrated in Fig. 4.1. 

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