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it carries a uniform service load of 2450 lb/ft in addition to its own weight. material strengths are f'c=4000psi and fy=60000psi .assume a weight od 150 pcf for reinforced concrete.
A bucket full of water is to be rotated in the vertical plane. What minimum angular velocity, in rad/s, is necessary to keep the water inside if the rotating arm is 120 cm
Calculate the required compressive strength for a concrete mix design if F'c = 5000 psi and data indicate a standard deviation of 600 psi based on 15 tests for a similar concrete mix
You have batched both of the mixes you designed in questions 6 and 7 on the same day and have made a sufficient number of 6" diameter and 4" diameter cylinders of each mix so that two cylinders of e
A square steel bar, 38 mm on each side, is used as a beam and subjected to bending of 460 N.m. Calculate the maximum bending stress.
A round steel rod 25 mm in diameter, is subjected to a bending moment of 160 N.m. Calculate the maximum bending stress.
A transit was set at point M and a leveling rod was held vertically at point N. The horizontal cross line of the telescope was inclined so the reading of the horizontal cross line on the rod was 12
To determine the distance between P and B, a point Q is marked on the ground and the following measurements are made: The distance between PQ is 230.0 ft, the angle QPB is 53°30', and the angle
House chilled water is available for cooling coming from 6-in dia. chilled water line carrying chilled water at approximate constant 40 degree F temperature. Chilled water pressure in the 6-inch lin
how many cubic yards of aggregate must be ordered for a road base 16 inches thick and 2000 feet long with a top width of 30 ft, if the side slopes are one on one, or 45 degree
Why is aluminum preferred over iron-based alloys in the aerospace industry and iron-based alloys over aluminum in structural numbers of bridges and buildings
A concrete mix with a 3in slump, w/c ratio of .5, and sand with a fineness modulus of 2.4 contains 1700lb/yd3 of coarse aggregate. Compute the required weight of coarse aggregate per cubic yard.
A 32mm rebar with a guage length of 200mm was subjected to tension to fracture according to ASTM E-8 method. if the rebar is loaded to 390kn only ad then unloaded, what is the premantnt change in leng
A drinking water treatment plant will be designed to process a flow of 15,000 m3/d. The sedimentation tank will have a residence (detention) time of 4 hours and the overflow rate (Q/A) of 16 m3/m2-d
For a design storm specified for an urban area in Tennessee, the depth of rainfall is 2.5 inches (6.35 cm). Initial abstraction in depressions on the pervious and impervious areas was estimated at 0
Determine the depth of a French drain (saturated depth) if the width is 3.0 feet, the effective permeability of the aggregate is 2000 ft/day, and the rate of discharge for 100 feet of trench is 1000
The vertical effective stress at a certain point in a loose sand is 1000lb/ft^2. If an earth quake were to occur, how much excess pore water pressure would need to develop at this point for liquefac
A site is underlain by a soil that has a unit weight of 118 lb/ft^3. From laboratory shear strenght tests that closely simulated the field conditions, the total stress parameters were measured to be
Determine a set of rectangular beam design values (b),( d) and (As) area of steel, that will be needed to support a factored bending moment (Mu=450 Kip-ft). Use (f'c=4,500 psi) and (fy=40,000 psi).
Calculate the area of the reinforcement required( As) in a singly reinforced rectangular beam required to carry an ultimate factored bending moment ( Mu = 140 Kip-ft). Use( f'c=3,000 psi) and( fy=40
What is the total deformation in a 15' 2'' square steel hanger that supports a 36000 pound load
What is the total moment M due to the force F about point O. Assume that moments acting counterclockwise about point O are positive whereas moments acting clockwise are negative.
Two remediation options are being considered for a contaminated land area formerly used for industrial operations. Option 1 involves removing all of the contaminated soil over a two-year period at a
An emission control system for a new car costs $750 and reduces NOx emissions from 0.4 g/mile to 0.18 g/mile. Assume the car is driven 10000 miles per year, and the life of the emissions control sys
The headwater elevation cannot exceed 544.4 ft MSL, without overtopping the roadway embankment. Find the required diameter for (a) a single barrel culvert and (b) twin barrels assuming a square edge