A door subframe is a crucial component, particularly in armored door systems, serving as the foundational structure that connects the door to the wall.
Based on the provided reference, the subframe is described as a fundamental and important part of the armored door. Its primary roles are:
- Bearing the Door's Weight: The subframe is designed to carry the significant weight of the door itself. This is especially critical for heavy-duty doors like armored ones.
- Transmitting Fixation to the Wall: It acts as the interface between the door assembly and the building structure, ensuring the door is securely anchored and transmitting the forces from the door to the surrounding wall.
Essentially, the subframe provides the necessary structural integrity to support the door and maintain its secure position within the doorway opening.
Positioning the Subframe
Proper positioning of the subframe during installation is vital. According to the reference, the subframe must be correctly aligned relative to the finished floor level. This involves either:
- Being based directly on the finished pavement (floor).
- Leaving sufficient space beneath it to accommodate the installation of the final flooring material.
This ensures that the door operates correctly and that the floor finish can be properly installed up to the subframe.
Why is the Subframe Important?
The importance of the door subframe, particularly in security applications like armored doors, cannot be overstated. Without a robust and properly installed subframe:
- The door's weight would not be adequately supported, potentially leading to structural failure or misalignment over time.
- The security features of the door would be compromised, as the door assembly would not be securely anchored to the wall, making it vulnerable to forced entry.
Therefore, the subframe is the hidden backbone that ensures the door is both functional and secure.
