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$11/06/2024$

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You will notice the problem with Terzaghi's equation, once you have added all the terms. Our advice is to leave the formula in its current state for now. We will be returning to Terzaghi's equation later.

Superstructure Loads

Supported Area

The column supports half the overpass length:

Supported area $A_d(m^2)=\frac{\text{o}\text{v}\text{e}\text{r}\text{p}\text{a}\text{s}\text{s}\text{l}\text{e}\text{n}\text{g}\text{t}\text{h}(m)}{2}$ deck width $(m)=$

Dead Load

The pad footing must support two dead loads: the weight of the deck $w_d$ and the weight of the column $w_c.$ You can assume that the weight of the column is $3\mathrm{.}7$ tonnes $($or $37kN).$ The deck has a distributedweight of $4\mathrm{.}8k\frac{N}{m^2}.$

Deck weight $w_d[kN]=$ distributed$-$weight $[k\frac{N}{m^2}]$ supported area $[m^2]=$

The Dead Load DL is the addition of the deck weight and the column weight:

Dead Load DL $[kN]=$ Deck weight $w_d[kN]+$ Column weight $w_c[kN]=$

Live Load

The Live Load is derived from the light rail vehicle vertical pressure ${}_{V,lrv}[k\frac{N}{m^2}]$ in Tutorial Two:

Live Load $LL[kN]=$ light rail vehicle vertical pressure ${}_{V,lrv}[k\frac{N}{m^2}]$ supported area $[m^2]=$

Total Load

The Total Load TL $kN$ on the pad footing is the combination of the Dead Load DL and the Live Load LL$.$

Total Load TL $[kN]=$ Dead Load DL $[kN]+$ Live Load LL $[kN]=$

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Tutorial Three