PRODUCT DATA SHEET GEOTEX® 12x1 GEOTEX 12x1 is a structural soil reinforcement geotextile containing high tenacity polyester multifilament (warp) and polypropylene slit tape yarns (fill) produced by Propex, and will meet the following Minimum Average Roll Values (MARV) when tested in accordance with the methods listed below. The individual yarns are woven to form a strong geotextile. These characteristics make the GEOTEX 12x1 ideal for the construction of steepened slopes and modular block and/or wrapped-face retaining walls This geotextile is resistant to ultraviolet degradation and to biological and chemical environments for normally found in soils. GEOTEX 12x1 conforms to the property values listed below. Propex performs internal Manufacturing Quality Control (MQC) tests that have been accredited by the Geosynthetic Accreditation Institute - Laboratory Accreditation Program (GAI-LAP). NOTES: MARV² PROPERTY Mechanical Wide Width Tensile Wide Width Elongation TEST METHOD ENGLISH METRIC ASTM D-4595 ASTM D-4595 14400 lbs/ft 11% 210.2 kN/m 11% Wide Width Tensile Strength at 5% Strain ASTM D-4595 6000 lbs/ft 87.6 kN/m Long-term Design GRI-GT7 7685 lbs/ft 112.2 kN/m Strength (LTDS) Puncture ASTM D-4833 180 lbs Trapezoidal Tear ASTM D-4533 400 lbs 800 N 1780 N Endurance UV Resistance ASTM D-4355 N/A N/A Hydraulic Apparent Opening Size ASTM D-4751 30 US Std. Sieve (AOS)³ Permittivity Water Flow Rate ASTM D-4491 ASTM D-4491 0.03 sec-1 2 gpm/ft² Roll Sizes 7.5 ft x 300 ft 0.600 mm 0.03 sec1 80 l/min/m² 2.29 m x 91.46 m 1. The property values listed above are effective 08/2006 and are subject to change without notice. 2. Values reported in machine (warp) direction. Minimum average roll values (MARV) are calculated as the typical minus two standard deviations. Statistically, it yields a 97.7% degree of confidence that any samples taken from quality assurance testing will exceed the value reported. 3. Maximum average roll value. In situ soil Yzc -Geotextile -Geotextile le Geotextile S, Sand, Y₁ Geotextile 45+/2 S Geotextile A retaining wall (see figure above) with geotextile reinforcement is 24 ft high. The soil backfill properties are y₁ = 120 lb/ft³ and '₁ = 32°. For the geotextile, use Geotex 12 x 1, where the long-term design strength is 7,685 lbs/ft. (Details from specification sheets posted on Canvas) Determine Sy, L, and /. Use FS(B) and FS(P) = 1.5. You may utilize the same reinforcement length for all depths... You DO NOT have to calculate the external stability for this homework. Let's assume it's OK for this problem!