The pressure $($energy$)$ loss between A$-$B$,$ A$-$C$,$ A$-$D$,$ and A$-$E must be equal if a proper air balance is to be achieved. The static pressure required in the duct at points B$,$ C$,$ D$,$ and E to produce the proper flow from the air$-$diffusing terminal units $($ceiling diffusers$)$ is assumed to be uniform and to be $0\mathrm{.}10$ in$.$ of water. Ignoring interference losses due to terminal unit takeoff. Calculate the total pressure loss between A and D$.$

Note: In practical application, minor static pressure imbalances up to $0\mathrm{.}05$ in$.$ of water can be absorbed by adjustment of dampers installed in air$-$diffusing terminal units and further minor adjustments of diverting dampers, in branch fittings. For greater imbalances, duct sizing must be modified and$/$or butterfly dampers installed in the branch ducts.