Make calculations to determine the Allowable Load for a $14$inch square precast concrete pile that is driven into a dense medium to fine sand deposit with $=36$deg. and $=125pcf.$ The pile is driven to $85ft.$ depth, and there is still $40ft.$ of sand below the pile tip. Groundwater is $6ft.$ below ground surface. You are to assume that a static pile load test will be performed on one representative pile for this project. Use the limiting$.$ depth and limiting$\_$pressure approaches for end bearing and for side friction. $,$ State the $K$ and $$ values you use, and justify. $(13$ pts$.$ poss.$)$

TH$--$P$--2.$ Pile Load Test $--$ You are to use the results of a pile load test given below to determine:

A$.$ The Ultimate Load that could be placed on a $14-$inch diameter $($O$.$D$.)$ steel pipe pile, with $\frac{1}{2}$ in$.$ wall thickness, and with closed end $($same $14-$inch diameter$),$ but not filled with concrete.

The pile was driven $130ft.$ into a medium dense alluvial medium to fine sand deposit.

Use Davisson method to interpret the results and determine both

the $Q_{\text{u}\text{l}\text{t}}$ and the $Q_{\text{a}\text{l}\text{l}}.$

pts$.$ poss.$)$

Plot the data on a separate sheet with axes properly labeled.

Use scale for settlement $1-$inch $=0\mathrm{.}5$ in settlement. Use scale for load $1-$inch $=50$ tons.

Measured

Measured

Load on Top of Pile $($tons$).$ Settlement of Pile TOP

$\backslash$table$[[($in$.).$ Settlement of Pile TIP $(),,],[35,0\mathrm{.}12,0\mathrm{.}00],[70,0\mathrm{.}25,0\mathrm{.}06],[105,0\mathrm{.}47,0\mathrm{.}10],[140,0\mathrm{.}75,0\mathrm{.}30],[175,1\mathrm{.}12,0\mathrm{.}57],[210,1\mathrm{.}73,0\mathrm{.}83],[245,2\mathrm{.}16,1\mathrm{.}16],[280,2\mathrm{.}60,1\mathrm{.}51]]$

TH$--$P$--3.$ B$.$ How much of the test load actually penetrated to the tip of the pile at the full $280$ ton load of the test.

Make the proper calculations necessary to determine the proportions of $Q_s$ and $Q_{\text{t}\text{i}\text{p}}.$

Make calculations to determine the Allowable Load for a $14$inch square precast concrete pile that is driven into a dense medium to fine sand deposit with $=36$deg. and $=125pcf.$ The pile is driven to $85ft.$ depth, and there is still $40ft.$ of sand below the pile tip. Groundwater is $6ft.$ below ground surface. You are to assume that a static pile load test will be performed on one representative pile for this project. Use the limiting$.$ depth and limiting pressure approaches for end bearing and for side friction. $,$ State the $K$ and $$ values you use, and justify. $(13$ pts$.$ poss.$)$

TH$--$P$--2.$ Pile Load Test $--$ You are to use the results of a pile load test given below to determine:

A$.$ The Ultimate Load that could be placed on a $14-$inch diameter $($O$.$D$.)$ steel pipe pile, with $\frac{1}{2}$ in$.$ wall thickness, and with closed end $($same $14-$inch diameter$),$ but not filled with concrete.

The pile was driven $130ft.$ into a medium dense alluvial medium to fine sand deposit.

Use Davisson method to interpret the results and determine both

the $Q_{\text{u}\text{l}\text{t}}$ and the $Q_{\text{a}\text{l}\text{l}}.$

pts$.$ poss.$)$

Plot the data on a separate sheet with axes properly labeled.

Use scale for settlement $1-$inch $=0\mathrm{.}5$ in settlement. Use scale for load $1-$inch $=50$ tons.

Measured

Measured

Load on Top of Pile $($tons$).$ Settlement of Pile TOP

$\backslash$table$[[($in$.).$ Settlement of Pile TIP $(in{?}_{(})),,],[35,0\mathrm{.}12,0\mathrm{.}00],[70,0\mathrm{.}25,0\mathrm{.}06],[105,0\mathrm{.}47,0\mathrm{.}10],[140,0\mathrm{.}75,0\mathrm{.}30],[175,1\mathrm{.}12,0\mathrm{.}57],[210,1\mathrm{.}73,0\mathrm{.}83],[245,2\mathrm{.}16,1\mathrm{.}16],[280,2\mathrm{.}60,1\mathrm{.}51]]$