TECHNICAL DATA SHEET Henry Drain Board Base Drain Prefabricated Drainage Composite
Physical property Fabric Properties
Typical value
Test method
Grab Tensile Strength Puncture Resistance
115 lbs (512 N) 320 lbs (1423 N)
ASTM D4632 ASTM D6241 ASTM D4491 ASTM D4751
Water Flow Rate
150 gpm (6113 L/min)
Apparent Opening Size
70 (0.21)
Core
Material
HIPS
Thickness
.44 – 1 in (11 – 25.4 mm) 9000 lbs/ft 2 (431 kpa)
ASTM D1777 ASTM D1621 ASTM D4716 ASTM D4716
Compressive Strength *Flow Rate @ HG 0.1 *Flow Rate @ HG 1.0
21 gpm (261 L/min) 80 gpm (994 L/min)
* In plane flow rate @ 3600 psf compressive load & referenced hydraulic gradient (HG)
Description
Henry Drain Board (DB) Base Drain is designed to provide a high-flow collection system to replace costly perforated pipe and stone collection systems for vertical wall applications in conjunction with Henry Drain Board products . Henry DB Base Drain is designed to handle the water volume generated by prefabricated drainage composites more efficiently. Utilize Henry Base Drain Universal Tees to connect to dewatering or drainage system. Henry Base Drain Universal Tees can be used to transition water to 4” smooth or corrugated pipe.
Features and benefits
Easy to handle and install
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• Strong and durable with high compressive strength and tear resistance • High impact polystyrene • Non-woven filter fabric Preparation
Ensure that the primary waterproofing system has been installed and inspected prior to installing Henry DB Base Drain . Flood tests may also need to be complete prior to the application of the Henry DB Base Drain . Henry DB Base Drain is used as a component of a Henry high performance waterproofing assembly in vertical applications. The Henry DB Base Drain enhances the performance of the watertight layer by directing water quickly and safely to a drain and drain system. Utilize Henry Base Drain Universal Tees to connect to dewatering or drainage system. Used in foundation walls, retaining walls and other areas where a high performance system is desired.
Application
Attach Henry DB Base Drain to vertical surfaces using Henry cold applied adhesives, Blueskin® PreSeal TM Tape 50S , and nails driven through washers, or other approved method. Vertical Application : When installed vertically, the flange should be at the upstream edge. This flange position minimizes the seepage of water behind the drain similar to the way roof shingles work. Overlaps : Pull back loose fabric to expose drain core. Position core of second panel over the overlap flange of first panel. Overlap in direction of water flow. Tuck fabric behind core at all outside edges.
Henry ® Company , 999 N. Pacific Coast Highway, Ste. 800, El Segundo, CA 90245 Tel: 800-486-1278 Email: techservices@henry.com www.henry.com
Revision Date: 4/27/2021
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