1.5 90 75 0.5 60 45 0.5 30 20 09 r=H/3 2H/3 Oo 02 0.4 0.6 0.8 r/h FIG. 3: The longitudinal stress force per unit weight of the chimney is shown as a function of the height fraction for several angles. Positive values indicate tensions, while negative values represent compressionsFIG. 3: The longitudinal stress force per unit weight of the chimney is shown as a function of the height fraction for several angles. Positive values indicate tensions, while negative values represent compressions. 8