How to choose fireproof glass windows

First, pay attention to the fire resistance function of supporting materials and structures

The fireproof glass window is only a kind of construction material, which can not become a fireproof separation component alone. It only needs to be combined and installed with its fixed and supporting components (such as window frame, support system of point supported glass curtain wall, etc.) to form a construction component (such as fireproof doors and windows, partition wall / skirt wall, etc.) in order to play its due role. The aluminum alloy horizontal through windows planned for a project span both ends of the firewall. In order to satisfy the request in the fire prevention standard that fire-proof windows should be set when the window spacing at both ends of the firewall is less than 2m, the planning drawing briefly indicates that "single piece cesium potassium fire-proof glass shall be used within 1m at both ends of the firewall". Obviously, this is the concept of mixing fire-proof glass and fire-proof window. Because the aluminum alloy window frame material can not reach the fire resistance limit of fire-proof window, it will soften and distort quickly under the action of high temperature, and then lose its fixing and supporting effect on the glass. Even if fire-proof glass is installed, it is not a "fire-proof window". Therefore, it is not just necessary to write "fireproof glass" in the plan, but also make a detailed plan for its supporting materials and structure, at least make a clear request for its fire resistance function. This question is particularly important when planning to use fireproof glass to build partition / skirt wall. Sometimes it may be difficult to accept due to beautiful questions or high cost, so we have to change the plan or choose solid wall instead.

(2) . be careful when forming a firewall

The fire resistance function of single fireproof glass can only reach class C listed above (only satisfied with the fire integrity request), and its maximum fire resistance limit only takes 90 minutes (i.e. 1 and 5H). The fire resistance limit of the standard firewall is required to reach 3H (or 4h), and its fire integrity and fire insulation (i.e. equivalent to class a of fireproof glass) are required together. Obviously, the selection of single fireproof glass may not meet the functional requirements of firewall. If it is necessary to plan the glass firewall for special needs and ask for outstanding visual permeability, at least two or more pieces should be used to form a hollow or sandwich, or even two walls should be set; The supporting system shall be specially planned and assembled into a "wall" for overall inspection to make it reach the fire resistance function of the firewall. In this way, if you expect to achieve the ideal function of fire safety and beauty, it will greatly increase the project cost, which is not suitable for selection under normal circumstances.

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