Solution:
we know that loading condition and clay condition are similar so we can say that
4m thickness of clay layer settle in one year = 8/100 m
therefore,
1m thickness of clay layer settle in one year = 8/(100x4)
so,
40m thickness of clay layer settle in one year = (8/(100 x 4) )x 40 = .80m or 80 cm
for 4 year the settlement becomes 4 times of one year settlement = 80x4 = 320 cm
7.7 A certain compressible layer has a thickness of 4m. After 1 year when the clay...
help with problems 1 & 2 please and explain
Problem 1 A deposit of Swedish clay is 15 m thick drained at both top and bottom. The coefficient of consolidation for the clay layer was estimated to be 1 x 10 cm/sec from laboratory test. The ultimate consolidation settlement (Sc) was calculated under the applied load in the field and was found 80 cm. Find the following: a) How long would it take for settlement of 40 cm and 70...
1. An 8-m thick normally consolidated clay layer is doubly drained as shown below. (This means that a very pervious layer compared to the clay exists on top of and under the clay layer) The embankment applied an average vertical stress increase of 100 kPa to the clay layer. The water table is located at the mid depth of the sand layer. Assume the sand above the water table is dry 0 Pore water pressure, u (kPa) 20 40 60...
7) (Total 20 pts) The figure shows a 20 m thick layer of normally consolidated clay (Y -18.6 kN/m3) that is one-dimensionally loaded by Δσ,-50kPa. The clay layer is below a 3 m thick layer of granular fill (y = 19.6 kN/m3), and a dense, compacted glacial till (impermeable) underlies the clay. The water table is located at the top of the clay layer. A 1-D consolidation test is performed on a 2.20 cm thick, doubly drained specimen from the...
g=9.81m/s^2
When it say "preconsolidated under vertical effective stress of
130 kPa", this means that the preconsolidation pressure at the
centre of the clay layer is 130 kPa, NOT that 130 kPa was applied
as a surcharge at the surface.
In the following questions, you do not need to divide the clay layer into multiple layers to calculate the consolidation settlement. Asume the clay to be only one layer q 50 kN/m2 3.0 m dry WT Sand: Ysat 1k -17...
The ground profile of a construction site consists of a 3 m thick layer of sand followed by a 2 m thick layer of clay lying on impervious bedrock. The watertable is at a depth of 2 m below the ground surface. The sand has a dry unit weight of 16 kN/m and a saturated unit weight of 18 kN/m3. The capillary rise in sand is 0.5 m. The clay has a bulk unit weight of 19 kN/m 1. One...
Problem 1 The XYZ Tile Co. has decided to secure its tile clay from a property owned by John Doe, adjacent to the tile plant. The company has made a royalty contract with Mr. Doe according to which Doe's holdings will supply the company's need of 200,000 tons per year for the next 15 years before the clay is exhausted. For the first five years, the company will pay a royalty of $1 per ton of clay. For the next...
3 Much is made of the fact that certain mutual funds outperform the market year after year (that is, the. return from holding shares in the mutual fund is higher than the return from holding a portfolio such as the S\&P 500). For concreteness, consider a 10-year period and let the population be the 4,170 mutual funds reported in The Wall Street Journal on January 1, 1995. By saying that performance relative to the market is random, we mean that...
4. Manor Technologies, Inc. has 90 operating plants in seven provinces. Sales for last year were P100 million, and the statement of financial position at year-end is similar in percentage of sales to that of previous years (and this wll continue in the future). All assets (including property, plant and equipment) and current liabilities will vary directly with sales Statement of Financial Position (in Million Pesos) Assets Liabilities & Equit P15 Cash Accounts receivable Invento P2 Accounts payable 20Accrued wages...
Answer questions 1 through 4 regarding Rockyford
Company
Rockyford Company must replace some machinery that has zero book value and a current market value of $2,600. One possibility is to invest in new machinery costing $48,000. This new machinery would produce estimated annual pretax cash operating savings of $19,200. Assume the new machine will have a useful life of 4 years and depreciation of $12,000 each year for book and tax purposes. It will have no salvage value at the...
After extensive research and development, Goodweek Tires Inc. has recently developed a new tire, the Super Tread, and must decide whether to make the investment necessary to produce and market it. The tire would be ideal for drivers doing a large amount of wet weather and off-road driving in addition to normal highway usage. The research and development costs so far have totalled about $10 million. The SuperTread would be put on the market beginning this year, and Goodweek expects...