Hoop Stress and ultimate failure

I have a question. I have a cylinder with semispherical heads. Size is 140mm diameter, 350mm overall length, 210mm between the head seams. The vessel is a strap-restrained elastomeric bladder. Circumferential straps are of high strength webbing (UHMWPE/Dyneema), webbing width is 30mm wide x 1mm thick, spaced in contact side to side. Properties of Dyneema: Tensile Strength, Ultimate, 3500 MPa, 508000 psi ; (I de-rate that by 25% to 2,625 because the strands in webbing aren't parallel to the load). Modulus of Elasticity, 110 GPa, 16000 ksi ; Tenacity, 3.53 N/tex, 40.0 g/denier. Breaking strength 1640 DaN Working pressure 500 kPa (Design safe working 5x 2500 kPa) Hoop stress at working pressure, I should get Stress Sigma 35mPa and total tensile load 1050 kg. Hoop stress at design pressure (2500kPa) I get sigma 175mPa and load 53.535kg Where I'm running into trouble is backing that data into the tenacity/breaking strength of the material to select thickness of the webbing