【Daily Question】 【AC Version for Static Equipment...Question 66】 March 7, 2019 – Revised multiple-choice questions...Everything is going well

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bg4.png【Daily Question】 【AC Version for Static Equipment...Question 66】 March 7, 2019 – Revised multiple-choice questions...Everything is going well...........................................................................The final voting stage for the 2018 \"Top 10 Outstanding Members of Haichuan\" has concluded — hope you’ll be nominated for this year’s list! Wishing all my friends by the seas and rivers: happiness every year, a harmonious family life, good fortune and success, smooth affairs and good health, and prosperity throughout life! ........................................................................... Answers (multiple choice, multiple choice, multiple choice) please fill in in order. Reward rules: 1 wealth for participation, 3 wealth for each correct answer, up to a maximum of 10 wealth. ...........................................................................1. When calculating vertical seismic forces, the total vertical seismic force should be determined first, and then allocated to each mass point; the principle for this allocation is ( ). A. Even distribution ； B、Inverted triangle distribution ； C. All allocated to the bottom particle ； D. Triangle allocation ； ---------------------2. Which of the following statements regarding steel tower-type containers is incorrect? () A. When the inlet pipe is connected by flanges inside the skirt, the inner diameter of the reinforcement pipe passage should be greater than the outer diameter of the flanges. B. When a conical skirt is used, the half-cone apex angle should not exceed 15°; the minimum thickness of the skirt cylinder, including the corrosion allowance, must not be less than 6 mm. D. The minimum thickness of the tower body made of high-alloy steel for tower-type vessels must not be less than 3 mm. ---------------------3. The value of the basic design seismic acceleration is 0.1g for seismic intensity levels of 7 degrees ； It is 0.2g at an octave ； At 9 degrees, it is 0.3g. ( ) A. Correct B. Incorrect --------------------- Answers: 1. B 2. D 3. B 1. Comment: This question tests the basic concepts of tower-type vessel design. 2. Comments: Tower-type containers NB/T 47041-2014, Technical Specifications for Tower Design HG20652-1998. 3. Comments: The load specifications require an assessment of the designer’s understanding and mastery of loads other than pressure loads. Table 7 in P33 of standard NB/T47041-2014: Values for the basic design seismic acceleration; for a seismic intensity of degree 7, it is either 0.1g or 0.15g ； It is 0.2g or 0.3g at an octave ； At nine degrees, it is 0.4g.