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d. The initial step in the computation is determination of .distribu› tion of weights. This is taken from the detailed weight s t~tement, weights therefrom being distributed to the proper frames. Lift of the gas in each cell is computed next and distributed as concentrated forces on the frames. The static loads on the hull are the differences between weight and buoyancy at each frame, lift being considered 

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positive and loads negative. When the airship is in static equilibrium, the algebraic sum of the loads must equal zero. Figure 27 illustrates the computation of loads at each frame of an airship 50 meters long, having four frames spaced 10 meters apart. The method shown is applied to the largest airships. 

e. Commencing at either end of the airship, the shear at any frame equals the algebraic sum of loads up to that frame. This system gives a constant shear between frames, changing at each frame QY 

