You are required to design pile foundation for two different working loads:

A$.,600kN$

B$.,1200kN$

Three criteria must be included into your design, which are:

Loading

i$)$ The loading is at the center of the pile cap

ii$)$ Consider the self$-$weight of the pile

Pile size

i$)$ If the pile size is $200mm200mm($Grade $30)$

ii$)$ If the pile size is $250mm250mm($Grade $35)$

iii$)$ If the pile size is $350mm350mm($Grade $40)$

Your designs are required to meet $3$ specifications:

i$)$ The bearing resistance of the soil with over design factor $>2$

ii$)$ The individual pile total settlement limit is $25mm$ for pile diameter less than $250mm$ or $10\%$ of effective pile diameter more than $250mm.$

iii$)$ The group pile total settlement limit is $50mm.$

Draw the layout of each pile cap for the two different working load.