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A 1m diameter pipe bend is carrying water with a steady flow rate of 2 m3/s. The bend has an angle of 90o and lies in a horizontal plane. The volume of water in the bend is 1.5 m3 and the empty weight
The jib crane supports a load of 750 lb from the trolley which rides on the top of the jib. The members of the crane are pinned together at B, E, and F and supported by a short link BH.
The channel entrance is rounded and smooth (negligible head loss at entrance), and the reservoir water surface is 2.5 m above the bed of the channel at the entrance. hf=0.00019*Q2, where Q (in m3/s)
A crane is placed along the easterly sideline of a building, but 25 feet from the front of the building. The building to be erected is a 6 story building that is 100 feet wide by 50feet deep. YOu ma
An equal tangent vertical curve is to be constructed between grades of -3.0% (initial) and 1.0% (final). The PVI is at station 110+00 and elevation 420 ft. Due to a street crossing the roadway, the
The heat exchanger consists of 12 m of copper tubing that is 2 cm in diameter with 19 return bends. The flow rate is 3 x 10-4 m3/s. Water enters at 20 C and exits at 80 C. The elevation difference b
A hydraulic cylinder must produce a minimum force of 3 kN for a pressure of 800 kPa. What minimum diameter piston is required
Determine the drag force FD on a golf ball assuming it is a smooth sphere. (Assume the air is at 60 F and standard pressure.) Now determine the drag force on an actual golf ball assuming CD = 0.25.
When working with flow through pipes , engineers typically have to determine if the flow is laminar or turbulent. Compute the Reynolds number for each of the cases below and determine if the flow is
A horizontal curve is designed for a two-lane road in a mountainous terrain. The following data are known: Deflection angle: 40 degrees Tangent: 436.76 Station of PC: 2695 + 73.89 Side friction factor
if a clay slope at a construction site fails derive an equation for the undrained shear strength of the clay given that the shear reistance along L of the slope can be given as: (SuH0)/ sin beta
How much calcium bicarbonate (kg/day) will need to be added per day in water with alkalinity of 30 mg/L CaCO3 to prevent rapid pH decrease (assume for simplicity inly bicarbonate alkalinity is prese
A hypothetical water treatment train consisting of coagulation/flocculation unit, filtration unit and chlorination system is used to treat surface water characterized by bacterial concentration of
A pump is to be used to draw seawater from the bay at an elevation of 0 to a reservoir at a desalination plant that has a water surface elevation of 255 feet. A 12-inch diameter DIP pipe (CHW = 120
To be sure that the part does not fail, we plan to ensure that the maximum applied stress is only one third of the tensile strength. We use a non-destructive test that will detect any internal flaws
A force of 100 000 N is applied to a 10 mm x 20 mm rectangular cross-section iron bar in tension. If the iron has a yield strength of 400 MPa and a tensile strength of 480 MPa, determine: whether th
A 300 mm diameter pipe is placed in a 3 m deep rectangular trench that is 0.60 m wide. The trench is backfilled with clay that has a bulk unit weight of 18.8 kN/m3. Compute the dead load due to back
An asphalt concrete mixture includes 94% aggregate by weight. The specific gravities of aggregate and asphalt are 2.65 and 1.0, respectively. If the bulk density of themix is 147 pcf, what is the p
Using darcy-weisbach equation, calculate the major friction head loss for a 24 inch diameter, 120 ft long pipe that can carry water with a flow rate of 5 cfs. Assume the temperature of water is 70 d
The pavement is on a base which has a modulus of subgrade reaction of 250 pci. A 17,000 lb corner load is applied (al is 7 inches). Using the revised Westergaard equations, find the modulus of elast
A tire carries a 5,000-lb load and has a pressure of 100 psi. The pavement has a modulus of elasticity of 43,500 psi. A deflection of 0.016 inches is observed at a point on the pavement surface 0.8
The beam ABC of length L has two different moments of inertia (2I in AB, I in BC) and a constant elastic modulus E. It is fixed at point A has a roller support at point B and a load P at C. a. Sketc
A light rail route has 2 terminals and 4 intermediate stations. The demand (passengers/hr) for morning peak hour is: North Terminal Station 1 Station 2 Station 3 Station 4 South Terminal
Discharge from an orifice of 75mm diameter is 0.02 m^3/s under a constant head of 3 m. An external mouthpiece of the same diameter is installed that raises the coefficient of contraction from 0.63 t
On a very hot day, I saw a 1.6 meter long steel bar held between two rigid supports that had buckled due to the heat. The bar had a cross section of 10 mm by 40 mm, and I assume was A36 steel.