Structural Steel Design (6th Edition)
6th Edition
ISBN: 9780134589657
Author: Jack C. McCormac, Stephen F. Csernak
Publisher: PEARSON
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H.W: show that the equations
1. (x+y)dy+(x-y)dx = 0
2. x²dy+(y²-xy)dx = 0
are homogeneous and solve:
H.W: Solve the differential equation
y' - (1+x)(1 + y²) = 0
The benchmark is 00.00. The backsights are 6.00, 9.32 and 13.75 and 14.00 The foresights are 6.00, 9.00 and 3.22. What is the height of the instrument? H.I.
- 100.00
- 124.85
- 43.07- 24.85
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- A short plain concrete column with cross-section dimensions of 12 in x 12 in is to be constructed. If the compressive strength of the concrete (f’c) is 5000 psi, what is the maximum load that can be safely applied to the column? - 600 k - 950 k - 720 k - 347 karrow_forwardThe borrow pit has 2000 cyds of suitable fill. The fill required for the project is 1900 cyds. The swell factor is 10% and the shrinkage factor is 15%. How much more borrow do we need? Or is there extra? - 13 yards extra - 13 yards short - 200 yards extra - 161 yards shortarrow_forwardThe job site has a primary vertical control point with a reference benchmark of 100 ft. An instrument is set up with an HI of 5.42 ft above the BM. A grade stake is set at an elevation of 96 ft. What is the height reading on the rod at the grade stake? - 9.42 ft - 4.00 ft - 1.42 ft - 5.42 ftarrow_forward
- Assume you have a simple beam 16 ft long supported on each end by R1 and R2. There is a concentrated load of 900 lb that is 4 ft from R2. Reaction R1 is pinned 12 ft from the load. Reaction R1 is 225 lb and R2 is 675 lb. What is the maximum bending moment in pounds per foot? - 3,600 - 1,800 - 2,700- 900arrow_forwardA wall form is four-feet high, ten-feet long and ten-feet wide. It is full of fluid concrete. What is the pressure at the bottom of the form? - 86,400 psi - 60,000 psf - 600 psf - 60,000 psiarrow_forwardhe sides of a building are 300 feet long and 200 feet wide. What is the diagonal distance between the opposite corners? - 300 feet - 306 feet - 360.60 feet - 306.6 feetarrow_forward
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