State whether the followings are True or False? (1) The angle of internal friction can vary from 0 to 90˚ since it is an angle. (2) A degree of saturation of 40% implies that 40% of the total volume consists of water. (3) Clays can have both cohesion and angle of internal friction. (4) In the triaxial test the horizontal plane is the major principal plane. (5) Piping (failure due high exit hydraulic gradient downstream) starts upstream and then progress to downstream face of a concrete dam. (6) It is safe to say that: in general natural soils in the field have larger permeability in the horizontal direction than the vertical direction. (7) Due to consolidation ∆? ?????????,?ℎ?? ? ?????????. (8) Consolidation is process of reducing voids by removing water and air if present. (9) In seepage in two dimensional impervious boundaries are equipotential lines. (10) Lowering the ground water table will increase the shear strength of the soil. (11) Due to consolidation the effective stress will increase. (12) Increasing the water pressure head at both upstream and downstream by 1 m will reduce piping.

The state government of Perak has recently announced the building of a suspension bridge between Pulau Pangkor and Peninsular Malaysia. The construction cost of the bridge is estimated at RM100 million and this 4-lane bridge will take approximately 3 years to complete. This infrastructure project is expected to encounter many technical challenges and require the involvement of various parties, particularly engineers of different disciplines and expertise. Predict engineering-related ethical issues that may possibly occur during the construction of the suspension bridge. Discuss on the root causes of each ethical issue you have identified. Finally, propose the efforts that can be duly taken by a professional engineer to prevent the ethical issues you have mentioned.
(20 markah/marks)

1. Create a schematic to show the step by step progression of joint faulting distress in a JPCP section of rigid pavement.

Give excell sheet for load calculation for designing building in staad and etabs

Give detailed excell format for stair case design also

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fluid mechanics lesson (calculating popa power)

Calculate the power of the pump required to pump the water in hp (1 BG = 550 lbf.ft / sec)? Density = 62.4 lbm / ft³ and Viscosity = 1 cp. Water can send to a tank on a flow rate of 30 ft³ / min. data: g = 32.2 ft / sec², gc = 32,174 lbm.ft / lbf.sec², T = 20 degrees Celsius, Pump efficiency = 0.80.

You have to a design a flexible highway pavement with soaked CBR value of soil subgrade equal to 4%. Draw a typical cross-section of the pavement as considered currently worldwide.  

Pipe (2) is supported by a pin at bracket C and by tie rod (1). The structure supports a load P at pin B. Tie rod (1) has a diameter of 10 mm and an allowable normal stress of 110 MPa. Pipe (2) has an outside diameter of 54 mm, a wall thickness of 6 mm, and an allowable normal stress of 165 MPa. Assume x₁ = 3.6 m, x₂ = 1.2 m, and y₁ = 3.5 m. Determine the maximum load P_max that can be supported by the structure without exceeding either allowable normal stress.

Explain all the modes of occurrence of water in the soil. Also, explain shrink, swell, bulking of sand and Frost action w.r.t soil mechanics (how it impacts or effects structures)

1. Determine the Stability  Category for the following scenarios:
   1. What stability category would most likely occur when the wind speed is 6 to 8 m/s?
   2. If the sky is overcast, synonymous with cloudy, what would the stability category most likely be?
   3. What would the stability category most likely be on a sunny April afternoon when the wind speed is 3 m/s?
   4. If the surface wind at night is 3 m/s and there is 5/8 of low clouds, what is the most likely stability category?
   5. It is a day of moderate insolation. The wind speed is 2.5 m/s and the cloud cover is 2/10. At a solar altitude of 45°, determine the stability class by:
      1. The Pasquill-Gifford method
      2. The Turner method

list igneous rock

In regards to the mix design of concrete, respond to each of the following by showing detailed calculations. Use the tables and figures below.

1. If the concrete characteristic strength = 40 MPa, with 2.5% defective test results, what will be the target mean strength?

2. If the target mean strength of concrete = 30 MPa at 28 days, the coarse aggregate is uncrushed, using GP (General Purpose) cement, what is the water cement ratio W/C?

3. If the concrete slump = 8 mm, the maximum aggregate size = 10 mm, assume using crushed gravel and uncrushed sand, what is the value of the free water?

4. If aggregate specific gravity = 2.7, free water content = 180 kg/m³, cement content = 300 kg/m³, W/C = 0.6, % passing 600 μm sieve = 0.6, slump = 20 mm, maximum aggregate size = 10 mm, what is the content of fine aggregate?

5. If cement content = 300 kg/m³, water content = 180 kg/m³, gravel content = 1100 kg/m³, sand content = 750 kg/m³, how are the mix proportions represented by ratio?