1413. Cement required for casting of 100 cft RCC roof at a mixture ratio of 1:3:6. (১:৩:৬ এর মিশ্রিণ অনুপাতে ১০০ cft RCC ছাদের ঢালাইলের জন্য সিমেন্ট প্রয়োজন।)
অনুপাতের যোগফল= 1+3+6= 10
শুষ্ক মসলার পরিমাণ = 100×1.5=150 cft
সিমেন্ট প্রয়োজন 1*150/10 = 15 cft@0.8bag/ft³ = 12 bag.
অথবা, 15 cft/1.25 ft³/bag = 12 bag.
15cft /1.25cft/bag = 12bag
উত্তর সহ কয়েকটি অনুরুন্ণ গুরুত্বপূর্ণ প্রশ্ন
1. If the various concrete ingredients l.e. cement, sand and aggregates are in the ratio of 1:3:6, the grade of concrete, is M100
2. For batching 1:3:6 concrete mix by volume, the ingredients required per bag of 50 kg cement, are: 105 litres of sand and 210 litres of aggregates.
3. For a concrete mix 1:3:6 and water cement ratio 0.6 both by weight, the quantity of water required per bag, is -14 kg
4. A concrete using an air entrained cement - Is more plastic and workable
1. reduction of B.M. is given by (5/6) (r 2/1+r4) M
2. A part of the slab may be considered as the flange of the T-beam if-Flange has adequate reinforcement transverse to beam, It is built integrally with the beam, lt is effectively bonded together with the beam.
3. By over-reinforcing a beam, the moment of resistance can be increased not more than 25%
4. Total pressure on the vertical face of a retaining wall of height per unit run exerted by the retained earth weighing per unit volume, is wh 2 [(1-)/2(1+sin)]