0.3 r=H/3 Ir=2H/3 90° 0.2 75 60° 5 0.1 300 20 10 0 0.1 02 0.4 0.6 0.8 r/h FIG. 4: The transverse shear force per unit weight of the chimney is shown as a function of the height fraction for several angles. Positive values are for forces in the ee directionFIG. 4: The transverse shear force per unit weight of the chimney is shown as a function of the height fraction for several angles. Positive values are for forces in the ebθ direction. 9