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In construction, a “strike,” also known as a “strike plate” or “keeper,” refers to a metal plate or component installed on the door jamb or frame to receive and secure the latch or bolt of a door or window. Strikes ensure proper alignment, operation, and security of doors and windows in residential, commercial, and industrial buildings. Proper installation and adjustment of strikes are essential for ensuring the functionality, safety, and security of doors and windows.

Function

The primary function of a strike in construction is to:

  • Receive and Secure Latch or Bolt: Strikes receive and secure the latch or bolt of a door or window, ensuring proper alignment, operation, and security.
  • Prevent Forced Entry: Strikes prevent forced entry by providing a stable and secure anchor point for the latch or bolt, resisting pressure, and impact from external forces.
  • Ensure Smooth Operation: Strikes ensure smooth and consistent operation of doors and windows by guiding the latch or bolt into the correct position, minimizing friction and wear.

Types of Strikes

Common types of strikes used in construction include:

  • Full Lip Strike: A full lip strike has a lip that extends along the entire length of the strike plate, providing additional support and security for the latch or bolt.
  • Adjustable Strike: An adjustable strike allows for fine-tuning of the alignment and engagement of the latch or bolt, ensuring a snug and secure fit.
  • Deadbolt Strike: A deadbolt strike is specifically designed to receive and secure the bolt of a deadbolt lock, providing enhanced security and resistance against forced entry.
  • Electric Strike: An electric strike is designed to work with an electronic access control system, allowing remote unlocking and monitoring of doors and windows.

Installation

The installation of a strike typically involves the following steps:

  1. Locate Position: Determine the correct position for the strike on the door jamb or frame, ensuring proper alignment and engagement with the latch or bolt.
  2. Mark Screw Holes: Mark the screw holes for the strike on the door jamb or frame, using the strike plate as a template.
  3. Drill Pilot Holes: Drill pilot holes for the screws to prevent splitting or damaging the door jamb or frame during installation.
  4. Install Strike: Attach the strike to the door jamb or frame using screws, ensuring that it is level, flush, and properly aligned with the latch or bolt.
  5. Adjust Alignment: Adjust the alignment of the strike if necessary, ensuring a snug and secure fit with the latch or bolt, and test the operation of the door or window.

Applications

Strikes are used in various construction applications, including:

  • Residential Construction: Strikes are used in residential construction for exterior and interior doors, ensuring proper alignment, operation, and security.
  • Commercial Construction: Strikes are used in commercial construction for storefronts, office buildings, and other commercial facilities, ensuring proper alignment, operation, and security.
  • Industrial Construction: Strikes are used in industrial construction for factories, warehouses, and industrial facilities, ensuring proper alignment, operation, and security.

Conclusion

In construction, a strike, also known as a strike plate or keeper, refers to a metal plate or component installed on the door jamb or frame to receive and secure the latch or bolt of a door or window. By receiving and securing the latch or bolt, preventing forced entry, and ensuring smooth operation, properly installed strikes are essential for ensuring the functionality, safety, and security of doors and windows in various residential, commercial, and industrial buildings.

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