6 Buried installations Live loads Bondstrand 5000 will carry H20 wheel loadings of at least 16,000 lb (7250 kg) per axle when properly bedded in compacted sand in stable soils and provided with at least 3 ft (1 m) of cover, Thrust blocks Most properly bedded installations do not require thrust blocks. Consult Ameron for recommendations for systems operating at elevated temperatures. Earth loads on buried pipe Nominal Maximum Earth Cover1 Pipe Size 100 psi 0.69 MPa 125 psi 0.86 MPa 150 psi 1.03 MPa ( in) (mm) ( ft) ( m) ( ft) ( m) ( ft) ( m) 2 50 30 9.14 30 9.14 30 9.14 3 80 30 9.14 30 9.14 30 9.14 4 100 30 9.14 30 9.14 30 9.14 6 150 30 9.14 24 7.32 23 7.01 8 200 23 7.01 22 6.71 21 6.40 10 250 23 7.01 21 6.40 19 5.79 12 300 23 7.01 21 6.40 18 5.49 14 350 23 7.01 21 6.40 17 5.18 16 400 23 7.01 20 6.10 16 4.88 1) Based on a 120 lb/ft3 (1925 kg/m3) soil density and 1000 psi (6.9 MPa) modulus of soil reaction. Span lengths Recommended maximum support spacings for Bondstrand 5000 vinyl ester pipe at various operating temperatures. Values based on 0.5-inch (12 mm) deflection at midspan for fluid specific gravity = 1.0. For fully continuous spans, values may be increased up to 20%. Decrease values by 20% for single spans. Field testing Bondstrand 5000 piping systems are designed for hydrostatic field testing at 150% of rated operating pressure. Pneumatic testing is not recommended. Nominal Pipe Size Span (ft) ( in) (mm) 100 °F 140°F 170°F 200°F 2 50 12.1 10.8 9.4 7.5 3 80 13.7 12.3 10.7 8.6 4 100 16.1 14.5 12.6 10.0 6 150 18.1 16.1 14.2 11.2 8 200 20.1 18.1 15.5 12.6 10 250 21.4 19.2 16.6 13.5 12 300 22.3 20.2 17.5 13.9 14 350 23.1 20.7 18.1 14.4 16 400 24.3 21.6 18.9 15.0 1) Span recommendations are intended for normal horizontal piping support arrangements (a compromise between continuous spans and simple spans), but include no provision for weights (fittings,valves, flanges, etc.) or thrusts (branches, turns, etc.). 2) Span recommendations are calculated for a maximum long-term deflection of 1/2 inch to ensure good appearance and adequate drainage. 3) Fully continuous spans may be used with support spacing up to 20% greater for this deflection: in simple spans, support spacing should be 20% less.
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