METHOD STATEMENT Sika Drain-850 Geo

Transcription

1 METHOD STATEMENT 3/6/2016 / 1 / SIKA LTD, / ALEX BURMAN WATERPROOFING

2 TABLE OF CONTENTS 1 Scope 3 2 System Description Uses Characteristics / Advantages References Limitations 3 3 Product Information Appearance / Colour Shelf Life Storage Conditions Thickness Unit weight Packaging 4 4 Installation General Lapping Lap at edge of roll (Flat Edge) Lap on a cut edge (No Flat Edge) Accessories Fixing Corners and Edges Drainage Pipe 7 5 Legal Note 8 2/8

3 1 SCOPE This method statement describes the step by step procedure for installing 2 SYSTEM DESCRIPTION is a heavy duty drainage and protection sheet produced from high density polyethylene (HDPE) with dimples 10 mm high and a filtration layer of polypropylene (PP) geotextile bonded on the top. 2.1 USES As a protection and drainage sheet for preformed sheet membrane waterproofing systems, liquid applied membranes and with the Sika White Box concept for waterproofing retaining walls and heavy duty roofs/podiums. 2.2 CHARACTERISTICS / ADVANTAGES High drainage capacity High mechanical/impact resistance Integral filtration layer Resistant to all natural aggressive mediums in ground water and soil Suitable for contact with soft water (aggressive to concrete) Can be installed on damp and wet substrates forms a drainage channel in the space between structural elements and backfill/soil/substrate to allow water to be drained away and, when linked to a maintainable land drain, will prevent hydrostatic pressure acting against the structure 2.3 REFERENCES EN LIMITATIONS is not resistant against exposure to permanent weathering and UV-light. When used in combination with PVC membranes, a separation (geotextile) must be used between the materials. Maximum installation depth: 10m. 3 PRODUCT INFORMATION 3.1 APPEARANCE / COLOUR Black HDPE sheet with 10mm deep dimples and a black geotextile filtration layer bonded on the top. 3/8

4 3.2 SHELF LIFE The product does not expire during correct storage. 3.3 STORAGE CONDITIONS Rolls must be stored in their original packaging, in cool and dry conditions. They must be protected from direct sunlight, rain, snow and ice, etc. 3.4 THICKNESS 10.0 (+/- 1.0) mm (EN ISO ) 3.5 UNIT WEIGHT 850 (+/- 5%) g/m2 (Dimpled Sheet) (EN 9864) 125 (+/- 20%) g/m2 (Geotextile) 3.6 PACKAGING Roll size: 2.44 m x m Weight: 975 g/m 2 Roll weight: ~30kg Consideration: is delivered with 6 rolls packed vertically on a pallet (L x W x H): 1150mm x 850mm x 2550mm. Special offloading and storage space should be arranged to handle this height unit. 8ft (2.5m) 6ft (1.8m) 4/8

5 4 INSTALLATION 4.1 GENERAL If the installation depth is less than 2.44m (height of the rolls), the may be rolled out horizontally along the wall and fastened on the top. This method reduces the number of vertical laps required. If the installation depth is greater than 2.44m (height of the rolls), the may be rolled out starting from the top to the bottom. 4.2 LAPPING Adjacent sheets should overlap by a minimum of 60mm LAP AT EDGE OF ROLL (FLAT EDGE) The edges of each roll have a flat area with loose geotextile. One side is 60mm wide; the other is 45mm wide. Wider 60mm Flat Edge Narrower 45mm Flat Edge The lap is created by: 1. Fold back the loose fleece on the wider (60mm) flat edge 2. Add a strip of double-sided tape (e.g. SikaProof FixTape- 50) along the flat section 3. Lap the narrower flat edge onto the tape and press firmly 4. Double-sided tape, or similar, may be required to hold the loose fleece in place 5. Fold the loose fleece over and press firmly 5/8

6 4.2.2 LAP ON A CUT EDGE (NO FLAT EDGE) If you need to create a lap on the edge of a roll that has been cut, there will be no flat edge to connect to, in which case the recommended solution is as follows. 1. Peel back the geotxtile from the edge of one sheet (3 dimples is approximately 60mm) 2. Lap the other sheet over the top, so that the dimples fit together 3. Add a strip of double-sided tape over the fleece 4. Fold the loose fleece back over the lap and press into the tape Note: Single-sided tapes can be used for sealing the laps as an alternative to the process above using double-sided tape. Sika CD corner seal tape (115330) or Sika CD plaster tape (115331) single sided tapes can close the geotextile at the laps. 4.3 ACCESSORIES Description Dimensions Material Code Image SikaProof FixTape-50 20mm x 20m Sika CD corner seal 10m Sika CD plaster tape 25m /8

7 4.4 FIXING The product can be fixed along the top edge (above the waterproofing membrane) and draped down the concrete face. Fix along the top with a nail and washer system every 250mm to prevent sagging or pulling at the nails. Strips of double-sided butyl tape (such as SikaProof FixTape-50) can be used if additional fixings are required across the main area of the sheet. Do not nail through the main area of the sheet if placed against a waterproofing membrane. Sheets may also be temporarily propped to provide support whilst backfill is placed, with props removed once backfill is deep enough to provide support. Single-sided tape or a separate piece of geotextile should be used to close the top termination edge to prevent material entry. 4.5 CORNERS AND EDGES Care should be taken when forming around sharp corners or edges to prevent the flow channel becoming blocked. For external corners, the geotextile may need to be cut and a tape applied to seal the geotextile once the sheet has been folded. For internal folds no special treatment is required. 4.6 DRAINAGE PIPE To continue the geotextile around the drainage pipe, peel back sufficient geotextile from the sheet and form over the drainage pipe. Any excess dimple sheet can be cut back as required. It is recommended to cover the pipe with crushed stones before covering with the geotextile. See the picture about a typical installation. 7/8

8 2013 Sika Services AG / Nr SIKA METAL WATERBAR Figure 1 - Typical installation of with SikaProof 5 LEGAL NOTE The information, and, in particular, the recommendations relating to the application and end-use of Sika products, are given in good faith based on Sika's current knowledge and experience of the products when properly stored, handled and applied under normal conditions in accordance with Sika s recommendations. in practice, the differences in materials, substrates and actual site conditions are such that no warranty in respect of merchantability or of fitness for a particular purpose, nor any liability arising out of any legal relationship whatsoever, can be inferred either from this information, or from any written recommendations, or from any other advice offered. The user of the product must test the products suitability for the intended application and purpose. Sika reserves the right to change the properties of its products. The proprietary rights of third parties must be observed. All orders are accepted subject to our current terms of sale and delivery. Users must always refer to the most recent issue of the local Product Data Sheet for the product concerned, copies of which will be supplied on request. FOR MORE SIKA DRAIN-850 GEO INFORMATION: Please visit the Sika waterproofing website at Sika Ltd, Version given by Alex Burman Phone: Fax: Mail: 8/8