Size, type, weight, maximum pushing force, vibratory energy (if applicable), and configuration of the installation rig in accordance with the requirements of Section 6.0 Equipment. Dimensions and length of mandrel in accordance with the requirements of Section 6.0 Equipment. Details of wick drain anchorage. Detailed description of proposed installation methods, including methods for overcoming obstructions and methods for splicing wick drains. MATERIALS C5.0 The minimum material The prefabricated drains are composed of a corrugated requirements given in this polymeric drainage core and a non-woven geotextile. specification are adequate for The drains may be either non-bonded or bonded. For typical conditions where wick non-bonded drains, the geotextile is wrapped around the drains are used. However, it is the responsibility of the Engineer corrugated core and seamed to itself. For bonded to verify that all material drains, geotextile is fused to both faces of the core along properties are appropriate for the peaks of the corrugations. their specific site. (For instance, contaminated sites may require The assembled drains shall have the following minimum properties: additional standards.) The Engineer may opt to add a clause Total Discharge Capacity 1.5 gpm ASTM D4716 which allows the use of specific (@ 40 psi (275 kPa) (5.7 lpm) pre-approved products or a and unit gradient) clause which requires that a minimum quantity of the The non-woven geotextile shall have the following minimum product has been successfully properties: used on recent projects (e.g. 5,000,000 linear feet (1,525,000 Grab Tensile Strength* 130 lbs ASTM D4632 linear m) in the past five years). (578 N) The Engineer may add minimum Trapezoidal Tear** 60 lbs ASTM D4533 values for discharge capacity (267 N) crimped conditions if severe deformations are anticipated. Permittivity 0.7 sec-1 ASTM D4491 The test method should be ASTM A.O.S. 70 sieve ASTM D4751 6918-09 Test Method “Standard for Testing Vertical Strip Drains The core shall have the following minimum properties: in the Crimped Condition.” Grab Tensile Strength* 200 lbs ASTM D4632 (890 N)
Size, type, weight, maximum pushing force, vibratory energy (if applicable), and configuration of the installation rig in accordance with the requirements of Section 6.0 Equipment. Dimensions and length of mandrel in accordance with the requirements of Section 6.0 Equipment. Details of wick drain anchorage. Detailed description of proposed installation methods, including methods for overcoming obstructions and methods for splicing wick drains. MATERIALS The prefabricated drains are composed of a corrugated polymeric drainage core and a non-woven geotextile. The drains may be either non-bonded or bonded. For non-bonded drains, the geotextile is wrapped around the corrugated core and seamed to itself. For bonded drains, geotextile is fused to both faces of the core along the peaks of the corrugations. The assembled drains shall have the following minimum properties: Total Discharge Capacity 1.5 gpm ASTM D4716 (@ 40 psi (275 kPa) (5.7 lpm) and unit gradient) The non-woven geotextile shall have the following minimum properties: Grab Tensile Strength* 130 lbs ASTM D4632 (578 N) Trapezoidal Tear** 60 lbs ASTM D4533 (267 N) Permittivity 0.7 sec-1 ASTM D4491 A.O.S. 70 sieve ASTM D4751 The core shall have the following minimum properties: Grab Tensile Strength* 200 lbs ASTM D4632 (890 N) C5.0 The minimum material requirements given in this specification are adequate for typical conditions where wick drains are used. However, it is the responsibility of the Engineer to verify that all material properties are appropriate for their specific site. (For instance, contaminated sites may require additional standards.) The Engineer may opt to add a clause which allows the use of specific pre-approved products or a clause which requires that a minimum quantity of the product has been successfully used on recent projects (e.g. 5,000,000 linear feet (1,525,000 linear m) in the past five years). The Engineer may add minimum values for discharge capacity crimped conditions if severe deformations are anticipated. The test method should be ASTM 6918-09 “Standard Test Method for Testing Vertical Strip Drains in the Crimped Condition.”
DFI%20Wick%20Drain%20Guide%20Specifications-February%202014.docx