Some items of building hardware are essential to ensure that the fire-resisting door stays closed in its frame in a fire emergency.

Door design considerations mainly as below:1, Where the building and inner door located2, Direction of the flow of people in the building3, Number of people the building expecting4, It is a fire resistant and heat insulated door Main concern points for this configuration are:1, Safety Door opening

Public buildings like most industrial and commercial premises are required to meet the conflicting need for both safety and security. Regulations relating to escape from buildings and general safety have made it desirable that doors at exits in public buildings, places of public entertainment, shops, etc, be fitted with ​panic exit devices.
The main purpose of a panic exit device is to give safe and effective escape through a doorway with minimum effort and without prior knowledge of the device.

Exit devices are available in two design styles

The surface vertical rod exit device mounts to the surface of the door. A top and a bottom rod extend the full height of the door and are attached to latch-bolt assemblies. The top latch-bolt assembly engages a strike that can be either surface-applied or mortised into the soffit of the frame. The bottom latch-bolt assembly can latch into a surface-applied or mortise strike in the floor. A latch-track threshold can also serve as a strike to secure the bottom latch-bolt assembly. Similar to rim exit devices, the operating trim extends through the door thickness and engages the lock case of the exit device.
The clearance between the door bottom and the finished floor is an important dimension that needs to be addressed. Depending on the design of the latch-bolt assembly and the strike, the doors may have to be ordered with a non-standard undercut to ensure the latch-bolt can properly engage the strike.

The necessity of panic exit device The scene of the fire is unpredictable. First, people inhale a large amount of smoke and cause fatigue and even loss of consciousness. If it is an ordinary handle lock or ball lock for an escape door, let alone pulling down or turning the handle to push the door ou

As we all know, fire rated hardware is the heart of a fire rated door. The normal open and close of the door is inseparable from the tacit cooperation of each fire rated hardware accessory. If a fire rated door is not used with a complete door system, it cannot pay a role as a door.

Fire rated doors can meet fire resistance stability, integrity and insulation for a certain period of time. It is a fireproof partition with certain fire resistance, such as in fire compartments, evacuation stairwells, and vertical shafts.
In addition to the function of ordinary doors, fire doors have the function of preventing the spread of fire and the spread of smoke, which can prevent the spread of fire for a certain period of time and ensure the evacuation of personnel.

Fire Exit Hardware is an exit device which is tested for both panic and fire conditions and is required to be used on fire doors where panic hardware is required by code or desired for durability. Since fire doors require positive-latching, fire exit hardware does not incorporate mechanical dogging. If a push/pull function is desired for a fire door, electric latch retraction hardware may be installed, as long as the latch projects automatically upon fire alarm.

A fire can be devastating to company property, but it doesn't have to be if you take into account fire-rated wood doors. With the right products, a fire can be controlled to minimize damage and provide safety to employees and customers.

There can be confusion in the marketing of door hardware when it comes to products that are "fire rated". When you scan through a suppliers catalog you will often find the notation that the hardware is "fire rated". But non fire rated door Hardware and fire rated door Hardware are two different types of door device.

When it comes to the fire safety work in the buildings, it is inevitable to mention an important role: fire doors. The matching door hardware is the most important thing to make the fire door have the true fireproof function.
Today, let’s talk about how the door hardware of D&D Hardware helps the building to solve fire safety problems.