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Dimensional deviation of fire window in fire window system

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Dimensional deviation of fire window in fire window system

Date:2017-10-31 Author: Click:

Dimensional deviation of fireproof window in fireproof window system


Test equipment

    Steel tape measure: the graduation value is 1 mm; the vernier caliper: the graduation value is 0.02 mm.


experiment procedure


The height of the fireproof window sash is measured by a steel tape measure. The measurement position is not less than 100mm from the two frames of the fire window (such as the AA position and A'-A' position in Figure 2), and the measured height values are respectively marked with the fire protection marked on the drawing. The window height value is subtracted, and the difference with the largest absolute value is the height deviation value of the fireproof window frame. 

The width of the fireproof window is measured by a steel tape measure. The measurement position is not less than 100mm from the upper and lower frames of the fireproof window (Fig. 2, BB position and B'-B' position). The measured width values are marked with the drawings. The width of the fire window is subtracted, and the difference between the absolute values is the width deviation of the window frame width.

 The thickness of the fire window sash is measured by a vernier caliper. The measurement position is the two borders of the fireproof window, the middle of the upper frame and the lower frame (as shown in the circle position in Figure 2), and the measured thickness values are respectively subtracted from the thickness of the window frame marked by the drawing. The difference in absolute value is the thickness deviation of the window frame.

The length of the two diagonal lines of the fireproof window is measured by a steel tape measure, and the measurement position is the inner angle of the window frame. The absolute value of the difference between the measured values is the difference in the diagonal length of the fireproof window.

                Figure 2 Schematic diagram of the measurement position of the fireproof window                  The unit is mm
防火窗系统中防火窗的尺寸偏差 

    

     H——the height of the fire window;

     W——the width of the fire window;

     O——The position of the window frame thickness measurement.



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