FoundationsSP08Exam1

FoundationsSP08Exam1 - Name: Score: CEE 4433 FOUNDATION...

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Name: Score: CEE 4433 – FOUNDATION ENGINEERING SPRING 2008 EXAMINATION I 25 FEBRUARY 2008 General Instructions: (1) The test is open book and open notes. You may use any design resource you feel is necessary except those involving a computer or your classmates. (2) Unless the problem specifically indicates to the contrary, assume that a FS=3 should be applied to the net ultimate bearing capacity. Further assume the net ultimate bearing capacity can be adequately approximated by the form of the general bearing capacity equation that we have used in class (see the formula sheets attached to this exam). The appropriate factor of safety for all problems is the ratio of the net ultimate soil bearing capacity to the actual net applied bearing pressure. (3) Pay careful attention to any NOTES that are specific to each problem (or part of a problem). Also, don’t forget the Bonus question. (1) 3 pts 3 pts 3 pts 3 pts No. 1 Ladle, Harrisburg Foundry and Machine Works, Harrisburg, Pennsylvania The foundry ladle shown below is frequently filled with molten steel. Estimate the applied bearing pressures for the following combinations, assuming the live load (the weight of the molten steel that is poured in the ladle) is subject to a load factor of 1.7 and the dead load (all other weights besides the molten steel in the ladle) is subject to a load factor of 1.4. NOTE: These calculations represent the most basic concepts of bearing capacity predictions and analysis. As such, grading of each part of this problem will be “all or nothing” . (a) Gross applied bearing pressure for factored loads. (b) Net applied bearing pressure for factored loads. (c) Gross applied bearing pressure for unfactored loads that are sustained. (d) Net applied bearing pressure for unfactored loads that are sustained. 10-FT INSIDE DIAMETER CYLINDRICAL VAT 12-INCH THICK TEMPERED STEEL WALLS AND BOTTOM γ = 495 PCF CYLINDRICAL 3-FT CONCRETE INSULATOR AND FOOTING γ = 150 PCF FINISHED FLOOR, EL. 424.0 10-INCH CONCRETE APRON SLAB (TYPICAL) TOP OF VAT, EL. 428.0 BOTTOM OF VAT, EL. 418.0 SUSTAINED WATER LEVEL, EL. 412.0 (MAINTAINED BY SUMP PUMPING) MOLTEN STEEL γ = 449 PCF (WHEN FILLED) BOTTOM OF CONCRETE, EL. 414.0 GLACIAL OUTWASH
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This note was uploaded on 07/19/2010 for the course CE 4433 taught by Professor Chrissaucier during the Spring '10 term at Mississippi State.

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FoundationsSP08Exam1 - Name: Score: CEE 4433 FOUNDATION...

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