Introduction to Sustainable Civil Engineering Design
1st Edition
ISBN: 9780134013916
Author: Neumann
Publisher: PEARSON
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Chapter 3, Problem 5EDDS
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Name three types of civil engineering project which is expected to be important and is a reason for new projects due to expected temperature increase of the planet’s oceans and atmosphere.
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A cylinder of fluid has dimensions of 0.2 ft in diameter by 0.45 ft high. If the weight of thefluid is 0.55 lb , determine the specific gravity and density of fluid.
A cylinder of fluid has dimensions of 0.2 ft in diameter by 0.45 ft high. If the weight of thefluid is 0.55 lb , determine the specific gravity and density of fluid.
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Introduction to Sustainable Civil Engineering Design
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- A cylinder of fluid has dimensions of 0.2 ft in diameter by 0.45 ft high. If the weight of thefluid is 0.55 lb , determine the specific gravity and density of fluid.arrow_forwardDraw the shear and bending moment diagrams and find the immediate deflection for a simply supported beam of length 20 ft. with the same live load at ½ span and cross-section as the previous problem. Assume a reasonable Modulus of Elasticity and concrete self-weight. Hint: You may look online for typical concrete self-weights and compressive strengths. You may also use the ACI 318 Code equation for the Modulus of Elasticity shown below, and the supplied Design Aids.arrow_forwardProblem 4. A major transmission pathway of the novel coronavirus disease 2019 (COVID- 19) is through droplets and aerosols produced by violent respiratory events such as sneezes and coughs (Fig. 1). For the purpose of providing public health guidelines, we would like to estimate the amount of time it takes for these droplets to settle from air to the ground. The relevant parameters are the settling time (ts), the initial height of the droplets (H), gravitational acceleration (g), density of the droplets (pa), radius of the droplets (R), as well as dynamic viscosity of the ambient air (Pair). Use dimensional analysis and the Buckingham theorem to answer the following questions: 1. Find the independent dimensionless parameters using the table method. Then, express the settling time as a function of the other relevant parameters. Your solution should match the physical intuition that the settling time scales linearly with the initial height. 2. How would the settling change if the…arrow_forward
- Question 4 An engineer is assigned to design a 25-stories office building which has a building height of 75 m. Reinforced concrete shear wall system as shown in Figure Q1(a) is adopted to resist the lateral loads. The shear wall is of thickness t = 350 mm and length L = 8.5 m. Use the following data: Young's modulus of concrete E = 28 kN/mm² and the lateral load intensity w = 1.20 kN/m². Assuming the frontal width of the building façade is 15 m is facing the wind force which in turn transmitting the wind force to the shear wall system, estimate the total value of sway A at the roof level. Question 5 For the Shear Wall in Question 4, if the total ultimate gravity load of the building acted on shear wall is 6000 KN, using a partial factor of 1.2 for the wind load, calculate the stress on the extreme right corner of the shear wall at first storey level. (A) 9.46 mm (B) 189.26 mm (C) 14.20 mm (D) 141.95 mm STOREY FLOOR LEV Shear wall Figure Q1(a) (A) 3.228 N/sq mm (B) 14.029 N/sq mm 75 m…arrow_forwardQuestion 4 An engineer is assigned to design a 25-stories office building which has a building height of 75 m. Reinforced concrete shear wall system as shown in Figure Q1(a) is adopted to resist the lateral loads. The shear wall is of thickness t = 350 mm and length L = 8.5 m. Use the following data: Young's modulus of concrete E = 28 kN/mm² and the lateral load intensity w = 1.20 kN/m². Assuming the frontal width of the building façade is 15 m is facing the wind force which in turn transmitting the wind force to the shear wall system, estimate the total value of sway A at the roof level. Question 6 If the similar building in Question 4 is designed using rigid frame method is to be designed to ensure the sway is within the allowable limit. If the building width is B, and with the same building height H=75m. Using a rough estimation method, calculate the maximum allowable deflection A at the roof level. (A) 9.46 mm (B) 189.26 mm (C) 14.20 mm 町 141.95 mm 1ST STOREY FLOOR LEV. Shear wall…arrow_forwardWhat are the biggest challenges estimators' face during the quantity takeoff and pricing phases?arrow_forward
- Question IV (30%): A 22 m thick normally consolidated clay layer has a load of 150 kPa applied to it over a large areal extent. The clay layer is located below a 3.5 m thick granular fill (p= 1.8 Mg/m³). A dense sandy gravel is found below the clay. The groundwater table is located at the top of the clay layer, and the submerged density of the clay soil is 0.95 Mg/m³. Consolidation tests performed on 2.20 cm thick doubly drained samples indicate the time for 50% consolidation completed as t50 = 10.5 min for a load increment close to that of the loaded clay layer. Compute the effective stress in the clay layer at a depth of 16 m below the ground surface 3.5 years after the application of the load.arrow_forward13-3. Use the moment-distribution method to determine the moment at each joint of the symmetric bridge frame. Supports at F and E are fixed and B and C are fixed connected. Use Table 13-2. The modulus of elasticity is constant and the members are each 0.25 m thick. The haunches are parabolic. *13-4. Solve Prob. 13-3 using the slope-deflection equations. 13 0.5 m 1 m 64 kN/m D BC 1.5 m 2.25 m 2 m 6.25 m -0.5 m E -7.5 m -10 m- -7.5 m. Probs. 13-3/4arrow_forward2. Find the equivalent concentrated load(s) for the bags of cement stacked on the dock as shown here. Each bag weighs 100 lbs and is 12 inches long. Draw the loading conditions for each showing the equivalent concentrated load(s). 1 bag = 100lbs L= 12 ft L= 6 ft L= 8ftarrow_forward
- I have a question for this problem in the first one wouldn't it be finding the total weight of the bags which =4800lbs and the multiply that by 12ft to find the concentrated load?? but if this is the case the load would end up as lbs/ft so I'm not too sure that is right.arrow_forwardThere are 2 parts A) L=12ft B) L1= 6ft, L2= 8ftarrow_forwardto determine the bearing capacity for the given beam a=0.5 m sigma1 =150 N/mm2 and sigma2 =200N/mm2.arrow_forward
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