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The BIS recommends that the size of a door frame and window frame should be derived after allowing a margin of______ mm alround an opening for convenience of fixing.(a) 2 mm(b) 6 mm(c) 5 mm(d) 10 mmI got this question during a job interview.My doubt stems from Components of a Door topic in division Doors, Windows and Ventilators of Construction & Building Materials |
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Answer» Correct CHOICE is (d) 10 mm |
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