Tech Specs

Design Details

Green Roofs

Brochure

Data Sheet

Project Profiles

Sports Installations

Draincore² Data Sheet

Product Description
Materials: Draincore² is made with an injection molded consisting of very strong rings integrated with a grid on one side. Standard resin is High Density Polyethylene (HDPE). Low Density Polyethylene (LDPE) is available for greater flexibility at additional cost.

Core materials contain UV inhibitors, are non-biodegradable, and offer excellent chemical resistance.

Size: Draincore² core is supplied in standard rolls from 0.5m to 2.5m (20" to 8.2ft.) wide, and lengths from 1 to 20 m (40" to 66ft.) long.

Applications
Standard Use: Draincore² is a lightweight, yet incredibly strong drainage core, ready to be covered with geotextile fabric for vertical and horizontal drainage applications, including:

• Landfills Drains
• Roof Decks
• Sports Turf Facilities
• Foundation Walls
• Subfloors
• Tunnels
• Retaining Walls
• Highway Edge Drains
• Landscape French Drains

Draincore² is designed to intercept and collect excess water from soils, and then transport this water to large pipe and/or storage containers.

The standard fabric characteristics and open nature of the structure provide capability for large infiltration and flow volumes, rivaling that of 10cm (4") drainage pipe, at 1.m (3') spacing.

Features

• Very high compressive load.
• Very high lateral flow capacity.
• Use of wide rolls-fewer joints.
• Built-in interlock system.
• Low weight - reduces deck loads.
• Thin - reduces depth of cover.
• Reduces hydrostatic forces upon subgrade walls.
• Easy to shop, store and install.

Specifications

Core Structure	English	Metric
Polymer	HDPE	-
Form	Rings & Grid	-
Thickness	1"	25 mm
% Open	92%	92%
Width & Length	40"x40'	1m x 1m
Weight	.41 psf	2 kg/m2
Crush Strength	302,400 psf	208,505kPa
Geotextile	1 or 2 sides,	local supply
Flow @ i=1	55 gpm/ft	63.4 lpm/m
Grid Tensile	496/138 lbs	225/63 kg

(parallel/diagonal)

textile*	English	Metric
Polymer	PP	-
Structure	Nonwoven	-
Weight	2.9 oz/sy	82 g/sm
AOS US Sieve	50	0.30 mm
Flow Rate/min	22 gpm/sf	896 lpm/m2
Puncture	25 lbs	111 N
Burst	90 lbs	400 N
Trapezoid Tear	30 lbs	134 N
Grab Tensile	120 lb/60%	534 N
Elongation	60%	-

*based upon Typar 3301

Maintenance
Under normal conditions, with acceptable backfill materials used, Draincore² will require no maintenance.

Warranty
Invisible Structures, Inc. warrants that Draincore² will be supplied without manufacturing defects, and will perform as stated in this document provided the applications and installation methods follow our recommendations.

If defects are found prior to installation, we will replace the product free of charge, or refund the purchase price of the product.

Product replacement or refund are the Buyer's sole remedy for breach of warranty or negligence and we will not be liable for any indirect, consequential, special or resultant damages.

To the best of our knowledge, the information contained herein is accurate. Final decisions as to the suitability of information or product is sole responsibility of user.

Short Form Design Specification
The Draincore² product shall be of an injection molded core of rings and grid covered by a layer(s) of geotextile fabric. All product and installations of the system shall be approved by the Project Engineer/Architect, and conform to the manufacturer's written recommendations.

Installation
Vertical Installation:

1. Generally, the grid side of the core (indicated on product) will face towards the source of water and away from the wall or structure being protected. If to be placed against soft insulation panels or waterproof membranes, a "protection layer" of geotextile fabric should be placed between the core and sensitive layer.
2. A wood nailing strip should be fastened to the vertical wall, with the panels hung with screws or nails through "hole" connectors into the wood strip.
3. Rolls of geotextile fabric can then be placed over the grid structure - held at the top by fastening to wood strip, and at the bottom by tucking under lowest drainage element (core, drain tile, etc.).
4. Place the bottom of the panel over the top and in front of the perimeter drain pipe (which should also be encased in geotextile). Provide slack so that backfill operation does not stretch or dislodge the panel or drain pipe.
5. Panels can be cut or bent to meet inside or outside corners with a wood tack strip used to keep in place.
6. Panels may be cut with diagonal cutter, pruning shear, or snips.
7. Fabric joints over the core should be minimized, and made by overlaps of 9" minimum - secured with duct tape or similar as necessary to prevent soil intrusion.
8. Torn or punctured fabric must be covered with patches of new fabric, held in place by tape or continuous bead of adhesive.
9. Backfill against the panels as soon as possible, taking care to not over compact and/or tear the fabric, using materials least likely to clog the fabric - avoid fine silts and clays. Perform clogging test beforehand if questions of backfill suitability exist.

Horizontal Installation:

1. Generally, the grid side of the core panels will face up, towards the source of water and away from the deck or structure being protected. If to be placed against soft insulation panels or waterproof membranes, a "protection layer" of geotextile fabric should be placed between the core and sensitive layer. This will prevent penetration by rings and provide escape route for water within rings.
2. Panels may be placed in any alignment offering best efficiency and fewest cuts.
3. Panels do not need fastening to the deck, but may be wrapped vertically to planters and parapet walls and secured to wood strip.
4. Place the panel continuously over the top of drain inlets. Place some form of marker at finish grade to locate drain inlets.
5. Panels can be cut or bent to meet inside or outside corners with wood nailing strips used to help keep in place.
6. Panels may be cut with diagonal cutter, pruning shear, or snips.
7. Unroll geotextile fabric over panels using widest roll possible to minimize joints. Fabric joints should be made with overlaps of 9" minimum - secured with duct tape or similar as necessary to prevent soil intrusion.
8. Torn or punctured fabric must be covered with patches of new fabric, held in place by tape or continuous bead of adhesive.
9. Cover the panels as soon as possible, taking care to not puncture or tear the fabric, using materials least likely to clog the fabric - avoid fine silts, clays, and dusty organic materials. Perform clogging test beforehand if questions of backfill suitability exist.

Placement of Other Materials:
Other materials placed directly upon the fabric should be done with caution as follows:

• Large Tree Balls - a slight cone of sand should be placed at the center point of the tree location, with a 30 mil liner (min. thickness) 2 feet larger in diameter than the tree ball placed over the sand cone. This will encourage strong tree roots to grow horizontally. Drainage water will flow to the edge of the liner before passing into the drainage layer.
• Paving materials - such as brick, concrete pavers and slabs, wood decking, stone slabs, etc., can be placed directly upon the fabric - provided the edges of the materials will not tear or puncture the fabric during handling. This will allow weight to be minimized. Otherwise, use traditional setting beds of sand, or lightweight aggregate and cement binder (allowing for drainage) between the drainage fabric and the paver. Aluminum or plastic "L" or "T" edging materials can be used to contain paving materials.
• Planter Retaining Walls - masonry or wood (railroad ties) planter walls can be placed directly upon the Draincore² and fabric covered structure, preferably with an additional layer of geotextile in between to act as a cushion. These planter walls should be designed to be self supporting, with opposite walls tied together to maintain shape and resist "blow-out" pressure. Segments of upstanding pre cast concrete pipe can be used successfully for planters also.
• Irrigation systems - If possible, use of low pressure spray, or drip, irrigation systems should be used (especially on roof decks) with all lines placed above the drainage fabric to minimize penetrations and chances for soil leakage. Valve boxes, supply mains and manifolds can be placed below and/or through the drainage layer and treated lie any other vertical obstruction.
• Electrical Wiring - all electrical wiring for current above 24v should be placed in conduit with water tight joints per electrical odes, and placed above the drainage fabric layer. If codes allow, low voltage wiring can be laid loose, secured to bottom side of protection board (1x2), or run in plastic pipe conduit (which allows easy replacement without disturbance of landscaping). Penetrations of drainage fabric layer should be avoided, or at least minimized.

	English Units % Slope # Layers Head - ft Q-cfs Q-gpm/ft 1 1 0.08 0.02 7 1 1 1.05 0.09 42 1 2 1.10 0.18 80 1 4 1.08 0.33 148 1 6 1.09 0.45 203 1 8 1.03 0.59 266 1 10 1.06 0.65 291	Metric Units % Slope # Layers Head - cm Q-liters/s Q-1pm/m 1 1 2.5 0.45 8 1 1 32.0 2.63 48 1 2 33.4 5.07 93 1 4 32.8 9.35 171 1 6 33.1 12.83 235 1 8 31.3 16.82 307 1 10 32.2 18.35 335
	10 1 0.95 0.11 47 10 2 0.92 0.20 88 10 4 1.04 0.39 177 10 6 1.04 0.54 241 10 8 1.01 0.65 294 10 10 1.01 0.72 321	10 1 28.8 2.97 54 10 2 27.9 5.55 101 10 4 31.8 11.16 204 10 6 31.8 15.24 279 10 8 30.7 18.52 339 10 10 30.8 20.25 370
	100 1 0.71 0.18 80 100 2 0.71 0.33 149 100 4 0.73 0.62 279 100 6 0.83 0.95 427	100 1 21.8 2.04 92 100 2 21.5 9.40 172 100 4 22.1 17.59 332 100 6 25.4 26.96 493

 

Ordering

For answers to your technical questions, or for a quote on your project, call us, 1-800-233-1510 or Fax 1-800-233-1522, or e-mail,

Beachrings2 | Draincore2 | Grasspave2 | Gravelpave2 | Rainstore3 | Slopetame2 | GreenBuilding1 | Total Stormwater Management
Home | Project Profiles | Sales and Support | About Us | FAQs | Downloads | Site Map