Farrar Grey

DESCRIPTION:	Hard fine-grained sandstone without visible laminations. Very durable with good weathering qualities. Country of origin: China
COLOUR:	Light Grey
Density: (ASTM C97-96)	2250 Kg/m³
Compressive Strength: ASTM C170-90	Dry: 78 N/ sq mm. Wet: 60 N/sq.mm
Water Absorption : ASTM C97-90	4.67%
Porosity: BRE141, BRE REPORT 1989	12.37%
Saturation Coefficient: BR141, BRE REPORT 1989	0.85
Flextural Strength: ASTM C99-87 (WET)	6.40 MPa
Durability:	Tests indicate failure due to frost action is unlikely.
Sodium Sulphate Crystallisation Test: BR141, BRE REPORT 1989	Saturated solution 15 cycles on 50mm sqaure cubes. Percentage loss in weight : 0.7% (average 5 cubes). Class A
Slip Resistance: BSEN 1341	Wet : 65-70

Please note that sandstone is a natural product and all results are subject to variation