Unique core design withstands compressive loads from backfill operations
Stickpin fixing method to prevent penetration of waterproofing
ABG Deckdrain is supplied in rolls, available in standard dimensions of 1.1m wide x 50m long or 2.2m wide x 25m long to enable quick installation and coverage rates. A range of core drainage thicknesses are also available, depending on the in-plane flow performance required and the volume of excess pore water pressure to be drained.
Basement wall drainage
The 4mm or 6mm drainage core size is the most commonly specified for the lining of basement walls in building applications that require a Type C product specification for the waterproofing barrier protection of below ground structures, in accordance with the BS 8102 code of practice.
BS 8102 Table 1. ABG Deckdrain is categorised for Type C Waterproofing – Drained Protection applications
External basement walls
The aligned flow paths of the cuspated drainage core gives high flow performance in all directions and replaces the need for heavy concrete block drainage.
The alternative to transportation and delivery of hollow concrete blocks for external back of wall drainage, represents an impressive carbon saving of 94%.
Podium Landscaping & Drainage
Many new buildings incorporate landscaped amenity areas above basement or car park areas. These podium decks can vary from lawn, planter & paved amenity spaces; to additional areas for access or car parking. These are often large, waterproofed decks with minimal falls which makes drainage a key design parameter. Deckdrain sub-surface drainage layer / geocomposite offers an effective and reliable drainage system for podium decks of all sizes, whilst also providing additional protection to the waterproofing layer below.
In addition to drainage of standing water from waterproofed decks of all sizes, Deckdrain’s high CBR puncture resistance protects the waterproofing from backfilling forces and root penetration, thus extending the performance and life of the system.
High compressive strength drainage cores
The Roofdrain 60 geocomposite offers a high compressive strength and enables a shallower drainage design for podium deck structures. Using a structural geocomposite drainage core in this application means the installation time and amount of drainage stone required can be significantly reduced.
The 60mm HDPE core provides an uninterrupted drainage void, allowing water to flow in all directions across the whole installed area. The cuspates can be interlocked to connect adjoining panels and can be stepped to achieve a tiered installation. Applications include block and permeable paving, with the 60mm deep Roofdrain core supplied in roll format to enable fast installation over large areas.
The storage cuspates are typically filled with pea gravel to provide a rigid sub-base and the upper side of the drainage core includes perforations to allow water to percolate through to the channels on the under side.
Emergency access routes
The high compressive strength of Roofdrain means it is also suitable for landscaped areas that need to be trafficked by emergency vehicles and can be combined with the Advanced Turf system to achieve grassed surface areas.
Edinburgh Quartermile podium landscaping including Roofdrain 60 and Advanced Turf system
Project Attenuation Calculations
