Compute foundation design bearing pressures

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Reference no: EM131688609

Assignment -

Your office supervisor asks you to evaluate the following site and subsurface data for feasibility of constructing three residential buildings with one-level open space below for parking at each, at finish grade elevation 150 feet (+/- 3 inches to slope for drainage), project datum. This places the parking below existing grades. The adjacent slope is as much as 35 feet high and the project is in Chittenden county near Lake Champlain.

Provide the following foundation design recommendations for three identical structures proposed as shown on the attached plan:

1. Bearing capacity for 1-inch and 2-inches of estimated footing settlement.

2. Recommended design values for foundation sliding resistance (base and lateral pressure).

3. Seismic site classification according to the International Building Code (or ASCE 7-10).

4. Bottom of foundation elevations for frost protection.

Use 125 pounds per square foot per floor level for estimated total dead and live loads and expected column spacings at 25 to 30 feet. The owner is contemplating structures at three to six stories high.

Deliverables

Prepare a brief memorandum, in a quality suitable to be given directly to the client, with the following:

1. Project site conditions and planned construction.

2. Simple narrative explaining the subsurface cross-section (including groundwater).

3. Feasibility of the site for spread footing construction.

4. Bearing capacity recommendations.

5. Seismic site classification and foundation sliding resistance values for static and seismic conditions.

Include the exploration/site plan, a representative subsurface cross-section, and your calculation package. You do not need to include the boring logs.

Graduate student(s) taking the course are to use at least three methods to compute foundation design bearing pressures and to comment on the reliability of the results. Undergraduate students should use at least two methods.

Assignment Files -

https://www.dropbox.com/s/5elu9n9b52ma8x1/Assignment%20Files%20memorandum.rar?dl=0

Reference no: EM131688609

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Reviews

len1688609

10/24/2017 2:26:09 AM

Follow the Homework Assignment Template. Report and Writing Guidelines, and the September 12 Comment on the first course assignment, all in Blackboard and your own sense of what a clear, concise, and complete submission comprises. Include the exploration/site plan, a representative subsurface cross-section, and your calculation package. You do not need to include the boring logs. Graduate student(s) taking the course are to use at least three methods to compute foundation design bearing pressures and to comment on the reliability of the results. Undergraduate students should use at least two methods.

len1688609

10/24/2017 2:26:01 AM

I discussed in class reminders regarding the features of a quality calculation submission. That is, of the caliber that you need to he submitting as part of your homework and in professional practice. I promised to send you my notes from what I discussed. The memo needs to be concise and neat. Position your answer prominently in the memo. Keep the memo as short as possible. Work on learning to be clear, concise, and complete in your communication. Show explanatory graphics with your calculations. Draw these to scale. Cite your key assumptions. Your calculations must he neat. They reflect the quality of your thinking and care your put into them, regardless of their accuracy or validity.

len1688609

10/24/2017 2:25:55 AM

Your calculations need to have a logical flow. If necessary, summarize a circuitous set of calculations with a cover sheet, extracting from the "winding" path as needed. Make your conclusion stand out. Always create scaled FBD's. These help you and the reviewer visualize the situation. Always check your calculations. Have a friend check them and sigmify with their initials. Show a common-sense reality check comparison. Satisfy yourself and the reviewers that your finding is sensible (Don't submit nonsense.) Always use appropriate significant figures in the final answer, and be sure to understand what those should be (e.g., if the strength property can only be estimated to within 10% don't show a factor of safety to 0.001)

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