CEN 347_DAY+EVE by Md. Mahfuzur Rahman
1. Determine the structural loads and member sizes at the foundation level; 2. Collect all the ge... more 1. Determine the structural loads and member sizes at the foundation level; 2. Collect all the geotechnical data; set the proposed footings on the geotechnical profile; 3. Determine the depth and location of all foundation elements, 4. Determine the bearing capacity, 5. Determine possible total and differential settlements; check effects at 2B depths; 6. Select the concrete strength (and possibly the mix), 7. Select the steel grade, 8. Determine the required footing dimensions, 9. Determine the footing thickness, T (or D in some textbooks), 10. Determine the size, number and spacing of the reinforcing bars, 11. Design the connection between the superstructure and the foundation, and 12. Check uplift and stability against sliding and overturning of the structure-soil system.
A combined footing is usually used to support two columns of unequal loads. In such a case, the r... more A combined footing is usually used to support two columns of unequal loads. In such a case, the resultant of the applied loads would not coincide with the centroid of the footing, and the consequent the soil pressure would not be uniform.
CEN 231 Engineering Mechanics by Md. Mahfuzur Rahman
Work: Work is a form of energy .if a force acts on a particle which undergoes a displacement ds t... more Work: Work is a form of energy .if a force acts on a particle which undergoes a displacement ds the Work done by the force is the product of the displacement and the component of the force in the direction of the displacement.
Given, a =2s We know, vdx = ads ∫vdv = 2∫sds v²/2 = 2• s²/2 + c v²/2 = s² + c When, s 0 = 0... more Given, a =2s We know, vdx = ads ∫vdv = 2∫sds v²/2 = 2• s²/2 + c v²/2 = s² + c When, s 0 = 0, v o = 0, So C = 0 v²/2 = s² v² = 2 s² v = s√2 After s = 10 ft, v = s√2 = 10√2 = 14 .1 fps Ans. Again, we know, v = ds/dt = s√2 ds/dt = s√2 ∫ 0 10 ds/s = √2∫ 0 t dt
The collision between two surfaces is called friction. For example, without friction we should no... more The collision between two surfaces is called friction. For example, without friction we should not be able to walk; we could not get our cars in motion, nor could we stop them if they were moving.
It is the property of a body which makes the body resists a change of motion. Mathematically
The moment of a force is the force times a moment arm. The moment arm is the perpendicular distan... more The moment of a force is the force times a moment arm. The moment arm is the perpendicular distance between the line of action of the force and the point or the axis about which the moment is taken. The point about which the moment is taken is called the centre of moment.
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CEN 347_DAY+EVE by Md. Mahfuzur Rahman
CEN 231 Engineering Mechanics by Md. Mahfuzur Rahman