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In jack arch floors, the rise of the arch is equal to ________ of the span.(a) 1/3(b) 1/4(c) 1/6(d) 1/12This question was addressed to me in examination.My question is taken from Types of Upper Floors topic in portion Floors and Flooring of Construction & Building Materials

Answer»

The correct option is (d) 1/12

The best EXPLANATION: In jack ARCH FLOORS, the rise of the arch is equal to 1/12 of the span. Jack arch is an arch made of either concrete or brick. In this, the SPACING between the joists is 1-1.5 m PLACED center to center.



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