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Light Dover Grey Dark Dover Grey Dover Shell Cottonwood (bottom) Cottonwood (top) Silverdale
Absorption by Weight, Max % 1.91 0.45 6.10 4.3 5 6.7
Dry Weight (g) 1025.7 1174.7 900.1 1082.6 928 909.8
SSD Weight (g) 1045.3 1180 934.1 1121.8 976.3 1059.5
Wet Weight (g) 641.7 736.6 522.6 663.9 563 606.1
Density, Min., lb/Cubic ft. 158.6 165.33 134.6 144.8 140.4 135.4
Compressive Strength, Min., PSI 11960 13990 5800 9770 7560 5120
Modules Parallel to Rift 1500 2420 1050 830 730 1560
Modules Perpendicular to Rift 1680 1980 810 1180 870 1800
*All materials tested using ASTM  standard testing methods.
 
Coverage Chart    
Product Coverage per Ton
Dover Grey 14'' Wall Block 5 Square Ft/Ton
Dover Grey 6'' Wall Block 7 Square Ft/Ton
Dover Grey 6'' Drystack 19 Square Ft/Ton
Flagstone Wall 25 Square Ft/Ton
Flagstone Patio 60 Square Ft/Ton
2.25'' Sawn Slabs 72 Square Ft/Ton
3.5'' Sawn Slabs 46 Square Ft/Ton
Dover Shell Veneer Stone 4''+/- 40 Square Ft/Ton
Dover Grey Veneer Stone 4''+/- 35 Square Ft/Ton
Cottonwood Veneer Stone 4''+/- 40 Square Ft/Ton
Silverdale Veneer Stone 4''+/- 40 Square Ft/Ton
Thin Veneer Stone 1''+/- 12.75 Lbs/Square Ft
*These are only approximations - Actual results will vary.    
*Masons often purchase 10% over actual calculations to compensate for any waste/breakage.  
© 2012 Higgins Stone Company, Inc. • 407 Miller Drive • Wamego, KS • (888) 456-9880
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