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A floor is to be supported on hardwood timber joists that are spaced at 0.5m centres and span 5.0m. The joists support flooring 20mm thick and an applied live load of 2kN/m2 Design a typical joint 5
A hardwood beam of rectangular cross-section 150x300 is simply supported over a span of 8m, and is loaded as sketched. Determine the maximum deflection of the beam. (Youngs modulus E = 12 x 10^3 MPa
Draw the S.F.D and B.M.D for the beam as a single unit and determine the position and amount of hte maximum bending unit. 5kN 30kN 5kN A B C D E 2m width 2.5m width 2.5m width 2m width 20kN 20kN
Inital Cost=$40,000, Estimated Salvage Value (@ year 5)=18,000, Actual Salvage Value (@ yr.5)=20,000, Depreciation: Straight-Line (No half -year convention), Life=5yrs, Annual Benefit=10,000, and ta
One way to treat amd is to treat the metals in a holding pond. The first order rate constant is 10/day. The concentration in the water must be below 5 ppm. How long in hours will it take to reduce t
Assume the stream is 3ft wide and 1ft deep (assume a rectangular cross section. If the flow throught the stream is 1000 gallons/day and the concentration at the beginning of the stream is 250 ppm
Design a hardwood beam to support a uniformly distributed load of 20 kN over a simply supported span of 8 m. consider bending strength only. Assume that the weight of the beam is 2 kN.
If this rod is to be used again with an initially straight axis, determine the maximum permissible deflection that may be allowed during testing procedures. Young's Modulus = 210 kN/mm2 and Yield st
Discuss bracing types of buildings with real-life example. Provide photograph or sketch for each type of bracing.
Calculate the compression resistance of 200 UC 59.5 column which is 3.6 m high (between lateral supports). Both ends of the stanchion are held effectively in position but only one is also restrained
A rectangular beam of width 300 mm and depth 450 mm supports loads producing a shear force of 300 kN at a particular section. What shear stresses exist at the following points
Calculate the area of flow, hydraulic radius, wet perimeter, and top width of a 12-inch diameter pipe that flows at 1/4 of its capacity.
Your boss calls you into his office and he is extremely angry. He was embarrassed at a meeting because he put forward a recommendation that you had made and his idea was shot down by one of the tech
Estimate the hourly production and unit cost of rock excavation by drilling and basting. The rock is limestone having a seismic velocity of 6000 ft/s. Trial blasting indicates that 3" holes drilled
Constructing the foundation causes changes in the levels of vertical stress at all points in the soil. One such point lies at the centre of the footing plan, and is at a depth of 10 m. Determine the
Consider again the scenario above. Assume the water is static. Assume a datum at the water surface. a) What is the total head 5.0m below the river bed b) What is the pore water pressure at that level
A river is 6 m deep. The riverbed material has a saturated unit weight of 19.5kN/m3. What is the effective vertical stress 12 m below the water surface
The solids in a specimen have a specific gravity of 2.65. If the oven-dry mass of the specimen is 25 kg, what is the volume of the solids in it
What is the dry unit weight, the saturated unit weight, and the buoyant unit weight, of a soil having a void ratio of 0.5 and a value of Gs of 2.7
Compare the total reactor volume required for 90% removal of a substance that decays according to first-order kinetics with a rate constant of 0.05 day -1 in a CM system that contains a single react
The influent flow is 380 Lpcd and the influent BOD5 is 200 mg/L. Pertinent data are: Primary clarifier removes 33% of the influent BOD5, and the state regulatory agency allows a volumetric loading o
what is the equivalent PF rate constant that would be used to describe treatment in a series of three CM reactors in terms of flow (Q), the total volume in the system (V), and the rate constant obse
Describe the types of business needs that can be addressed using information technology-based solutions.
On a shovel/truck operation the production of the shovel is 293 BCY/h and a job efficiency of 0.75. The trucks used have a capacity of 12 BCY and have a cycle time of 45 min.(excluding loading).
A motor grader will require 2 pases at 3 mph., 2 pases at 4 mph., and 2 passes at 5.5 mph. to accomplish the work How many grder hours will be required to accomplish this job if the job efficiency f