The foundation for a two$-$lane $($one each in the two directions$)$ concrete deck bridge

spanning a waterway in a coastal area is to be designed with four piers carrying the

bridge load at the two end bents. Bridge piers are formed by pile groups. For simplicity,

assume that a slab formed by a box girder supported by two concrete I$-$beams at each

bent forms the rough cross$-$section of the bridge $($Figure $5).$ Design the most economical

pile group that is needed for the two piers that rest on the bridge abutment.

The span length between adjacent piers is $(100+0\mathrm{.}5I)ft.$

I $=$ your index number

Soil properties at the bridge abutment

Use the posted SPT profiles

SPT profile $1($for odd I values$)$

SPT profile $2($for even I values$)$

Typical dead and live loads

Students are responsible for finding this information based on the above description of

the bridge parts relevant to your project. You do not have to consider wind loads since

laterally loaded pile design is a graduate topic, Dimensions of each component described

above can be decided by logical proportioning of them with respect to the bridge length

or using a information search.

Other requirements:

Criteria you used to select the type of pile

Criteria you used to select the pile depth

Criteria you used to select the pile size

Bearing capacity calculations

Settlement calculations

Cost estimates

Method of construction of the finnotation

Fig. $51$ ypical cross$-$section of a concrete deck bridge