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- 2. A wood pole with a diameter of 1 inch has a moisture content of 5%. The fiber saturation point (FSP) for this wood is 30%. The wood shrinks or swells 1% in the radial direction for every 5% change in moisture content below FSP. а. What would be the percent change in the wood's diameter if the wood's moisture is increased to 55%? b. Would the wood swell or shrink? С. What would be the new diameter?7. A commercial laundry is considering constructing an ion exchange process to remove hardness from the water. The flow required is 1000 m/day and they use city water which contains 200 mg/l as CaCO3 of calcium and 100 mg/l as CACO3 of magnesium. Total hardness should be reduced to 80 mg/l as CaCO3. The resin has a Total Hardness (TH) capacity of 60 kg TH/m³ of media and the recommended hydraulic loading rate is 0.5 m/min-m2. (a) What is the water flow rate (m/d) that need to be treated ? (b) What is the total daily resin volume (m') required to soften the water? And (c) What is the area of exchanger bed needed.•Sam, the strawberry producer, has had complaints from the produce company that his strawberries are damaged during transit. Sam would like to know the force required to damage the strawberries if they are stacked three deep in their container. •The damage occurs on the bottom layer at the interface with the parallel surface of the container and also at the point of contact between the layers of strawberries. •An hydrostatic bulk compression test on a sample of Sam's strawberries indicates an average bulk modulus of 225 psi. Testing of specimens from Sam's strawberry crop shows a compression modulus E of 200 psi. The average strawberry diameter is 1.25 inches and the axial deformation due to the damage in transit averages 0.23 inches. The modulus of elasticity for Sam's variety of strawberries is reported to be 130 psi. •Estimate the force Sam's strawberries may be encountering during transit. (Hertz method)
- Correct and complete solution pleaseSolve mcqQ2) Layers of Brass, Steel and Aluminum are bonded together and formed section shown below. Cantilever beam is loaded at the tip with 100 kN. In the cross-section height of steel is 50 mm, height of the aluminum is 350 mm and height of the brass is 100 mm. Modulus of clasticity for the materials are given as; Steel, Est = 200 GPa, Aluminum, E = 70 GPa and Brass, Esr= 105 GPa. Find the maximum axial stresses under given loading for Steel, Aluminum and Brass, separately. Steel 150 kN 500 mm 50 mm Aluminum Aluminum 350 mm Brass Brass 100 mm Cross Section of the 5 m Beam Fixed Side view of the Beam Support
- 6. A commeIcial laundry is considering constructing an ion exchange process to remove hardness from the water. The flow required is 1000 m/day and they use city water which contains 200 mg/1 as CaCO3 of calcrum and 100 mg/1 as CaCO3 of magnesium. Total hardness should be reduced to 80 mg/1 as CaCO3. The resin has a Total Hardness (TH) capacity of 60 kg TH/m' of media and the recommended hydraulic loading rate is 0.5 m/min-m2. (a) What is the water flow rate (m/d) that need to be treated ? (b) What is the total daily resin volume (m') required to soften the water? And (c) What is the area of exchanger bed needed.In the extreme fibre of a concrete beam, the value of compression is 5.80 MPa. The neutral axis of the beam is at a depth of 58 mm and the cpmpressive strength of the concrete used is 25 N/mm2. Calculate the effective curvature of the beam (in mm).the external and internal diameters of hollow cylinder are 115mm and 99mm respectively. when the cylinder is compressed by an axial force of 180kn the outer diameter of cylinder increases by 115.5 x 10-4 mm . determine youngs modulus of elasticity 2x105 N/mm2 a) the increase in the inner diameter . b) the increase in the wall thickness and c) Poissons ratio of the material of the cylinder
- If a new type of material that's a hybrid of plastic and wood shavings is brittle and has an ultimate compressive strength of 20 MPa, an elastic modulus of 1000 MPa, and a Poisson's ratio of 0.20, A. Calculate the bulk modulus for plastic wood. B. Calculate the maximum strain that can be put on plastic wood. C. Assuming that plastic wood is isotropic, calculate the maximum hydrostatic pressure that can be put on plastic wood. D. If the plastic wood has a fracture toughness of 0.2 MPa-m.5, calculate the maximum crack length if the stress on the plastic wood is 1 MPa.6. The temperature of concrete for highways reaches 60C in summer, and in winter the temperature drops to (-40C). What is the magnitude of the expansion of a section of highway concrete of 10 m in length when exposed to the highest and highest temperature? Note that the linear expansion coefficient is 2 - deg 12x10-6 (Ans = 12mm) %3DAccording to Figure 5-20, is ii possible to completely separate one of the four materials from the other three? Explain your answer.