The goal of this masters thesis is to proof the capacity of Gründerzeit houses with L -shaped ground plan. In dependence on the existing proof for square ground plans, which is required by Magistratsabteilung 37 S, the seismic load is established with the simplified response spectrum method. In order to make this proof useable for L -shaped ground plans, one central question had to be resolved. How should the occuring torsional moment be distributed to the brick walls? The distribution ensues in nearly symmetrical square parts, which recieve share-based forces as function of the lever arms. Via superposition of the forces for torsion and shear force the resulting stress is gained. For the analysed ground plan, the capacity could be advanced. The new proof is not much more effort than the existing and therefore very practicable. The developed model should be verified by other methods.