Measurement methods necessary to verify the hypothesis about smoke shielding performance proposed by the previous paper were suggested and the validity of these methods was inspected. These methods suggested in this paper were shown below with measurement items necessary for the verification of the hypothesis. 1) The wind velocity of the ingredient vertical for the upper surface and the perpendicular surface in the smoke shield opening It is measured with a directional anemometer which was

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... lled so that direction of measurement became perpendicular to a measurement surface. 2) Static pressure difference The some newly developed devices were installed so that the angle to be formed of each device becomes less than 90 degrees and the maximum of measurement values was considered as the static pressure difference.