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Dear Sara A diaphragm is a slab with infinite axial stiffness which force all nodes in a level moving together when a lateral load is applied on the structure. Ok? You can say to yourself why modelling
Dear Muhammad No difference between a slab and a beam in this matter. You use top bars on corners, lower bars on the bottom. Usually you use a minimum top bars all over the slab and also for the lower
"A rectangular flower bed has a perimeter of 54 feet." Let L and W be the length and width, respectively. L + W = 27 W = 27 - L "7 additional beds were placed side by side next to the first bed."
No, joules=watts*seconds, not the other way around. A Joule/second is a Watt. And if you have a joule in a femtosecond, you have 10^15 Watts of average power. Mass and energy are related by E=mc^2
Dear Salim The horizontal and rotational springs have no influence on your problem result Then you can consider them more than 100 times the vertical springs or even more. after all the vertical deflection