BAT MkIII Filter Tips - Installation Manual -Brochure

Installation of the BAT Mk III Filter Tip - Preparation - Installation - Accessories Phone +46 851170600 Fax +46 851173361 www.bat-gms.com info@bat-gms.com BAT Geosystems AB Box 1060 SE - 186 26 Vallentuna Sweden version 2006-11-23 Contents page Preparations 1 Installation 2 Installation force & Disturbance effects 3 Accessories 4 APPENDIX 1 Preparation of BAT MKIII Vadose 5 APPENDIX 2 Installation of BAT MKIII Vadose 6 • Fit a yellow needle to the syringe • Fit the centraliser to the filter tip • Lower the filter tip into a bucket containing deaired water until that the filter is below the water surface • Connect the syringe via the centraliser and penetrate the rubber septa. • Use the syringe to draw out the air to water satu-rate the filter tip. Draw a total volume of 40 ml water trough the filter tip, i.e. equal to two syringe volumes. • Finally, when pulling out the needle, you shall maintain a suction in the syringe to expell any trapped air at the top of the filter tip. • Let the filter tip remain submerged until time for installation NOTE The BAT MKIII filter tip must not be boiled to get saturated Preparations page 1 For instruction on BAT MKIII Vadose, see Appendix 1&2 BAT MkIII Standardart.no. 2-100Syringe105252015art.no. 4-402art.no. 4-404SeptumCentraliserYellow needleart.no. 3-105The BAT MKIII Std can tolerate an installation up to 25kN in fine grained soils. Depending on the soil, you can use several different in-stallation methods. The most common method for the Swedish soil conditions is simply “push in”-installation using an ordinary drill rig. In harder soils predrilling may be required. • Clean the inside of the adapter pipe and the 1” exten-sion gas pipes. It is recommended to use galvanized pipes. • Pre-drill the harder top soil layers. • It is recommended to fill the pre-drilled hole with water. • Screw the filter tip into the 1”-adapter pipe. Hand tighten, no tools are needed Let the filter tip remain submerged while doing this. • If using a rig for the installation, place the bucket un-der the chuck of the rig. Attach an extension pipe to the chuck and screw it together with the adapter pipe always keeping the filter tip submerged. After this, quickly, remove the bucket and commence the instal-lation. Do not rotate the pipe during installation which may damage the filter. • Use extension pipes as many as needed and remem-ber to apply some kind of thread sealing agent to prevent leakage of water into the pipe. This may for example cause problem wintertime in colder climates. • Note date, depth and location of the installation. Add 3cm (1,2”) to the total length of installed pipe (the distance between end of pipe and the filter tips intake). If using the special measure tape (#3-106), no compensation is needed. • Seal the top end of pipe either by using a cap or the specially designed protective housing (#3-207). To prevent rotation of the extension pipes, do always use two wrenches. Installation page 2 For instruction on BAT MKIII Vadose, see Appendix 1&2 art.no. 3-101BAT MkIII Standardart.no. 2-1001" adapter pipeInstallation Force In case the BAT Filter Tip is installed using ordinary 1”-gas pipes, the allowable installation force is normally limited by the strength of the pipe couplings. The BAT MKIII Std Tip can sustain a static installation force of 25 kN in fine grained soils. The BAT MKIII SS Tip (stainless steel) can tolerate a static installation force of 80 kN in fine grained soils. This filter tip also be installed by using light dynamic equipment. Dissipation of pore pressures, caused by disturbance during installation When the BAT Filter Tip is pushed into the soil, excess pore pressures will be generated due to the disturbance of the soil. In soft clays, normally high excess pore pressures are generated. On the contrary, in silts and fine sands it can happen that the installation of the filter tip generates a negative pore pressure response, due to dilatancy effects in these types of soil. The time needed for dissipation of these disturbance effects on the original pore pressure situation varies with the type soil. In soft, high plastic clay it may take up to 5 to 7 days until the original pore pressure situation is restored. In silts and sands, on the other hand, the dissipation of the disturbance effects from the installation of the BAT Filter Tip is much quicker. The process of dissipation of excess pore pressures can be monitored by the BAT Pore Pressure sensor. In addition this type of monitoring provides valuable information about the character of the soil, surrounding the filter tip. Installation force & Disturbance effects page 3 Measure tape to determine installation depth of the BAT Filter Tip. (art.no. 3-106) phone +468 51170600 fax +468 51173361 www.bat-gms.com info@bat-gms.com BAT Geosystems AB Box 1060 SE -186 26 Vallentuna Sweden Accessories 1”-pipe page 4 Protective housing for the cable and battery unit. (art.no. 3-207) page 5 27mmAPPENDIX 1.use any tools, finger-tight is enough 70mmTip4) Use the syringe for drawing water MAINTAINING THE SUCTION in the syringe.through the Ceramic Filter and the Filter Tip. through the ceramic filter and the Filter Tip. 5) Draw a total volume of approx. 15ml procedure by SLOWLY PULLING OUT 6) IMPORTANT Finish the water saturation the needle, while SIMULTANEOUSLY 7) Maintain the Filter Tip submerged inwater until installation in soil.17.5x23x3mmRubber sealthreadceramic filterdia. 26mmheight 35mmOver-tightening may damage the filter.(n.b. fairly strong fingers are needed)and penetrate the rubber septa (see 2) Fit a yellow needle to a 20 ml syringe.1) Lower the Filter Tip into a bucket, WATER SATURATION OF FILTER TIP3) Connect the syringe via the centralizercontaining clean de-aired water. instruction on Page 1.)?17.5x23x3mmRubber sealBodyM30ThreadBAT MkIII Vadose Filter Tip (2-102).1) Assemble the Rubber seals and theinner thread of the. Body. DO NOT Tip. Put a few drops of water on therubber seals to reduce friction.Ceramic Filter onto the axle of the2) Screw the Tip into the inner ASSEMBLY??page 6 Installation of BAT MkIII Vadose Filter Tip (2-102).pre-augering.electric drill for thepossible to use a strongthe soil type it might beof 10 mm. Depending on thefitting with a "wrench-width"rod has a hexagonalThe top of the extensionthe BAT Vadose Filter Tip.(stiff soil) is used for pre-augering forDepending on the soil type, the 22mmauger (soft soil) or the 25mm augerpre-augering.dia.22 or 25mm150 to 300mminstallation depthMeasure and note the depth of 0.3m depths in each turn.N.B. Pre-auger successively Pre-augering.Top ofextensionrod.width 10mmwrenchHex. endthe BAT Vadose Filter Tip. supplied, having the lengths of 700mm and Extension rods (dia. 19mm) to the augers arelength 300 300 mmdia. 22 25 mm1100mm.following dimensions:together with two augers having the2) The BAT Vadose Filter Tip is supplied sligthly smaller than the diameter (26mm).PRE-AUGERINGThe augered hole shall have a diameterfull installation depth.Tip requires pre-augering of a hole to the 1) The installation of the BAT Vadose Filter?the adapter pipe to the pre-augered depth.1-inch pipe to prevent surface water from .soil type the time needed for stabilization will The stabilization process can be monitored by5) Wait for stabilization of the pore pressure.logging the pore pressure. Depending on the it to the 1-inch pipegrip the Filter Tipon its shoulderwhen connecting7) Seal the pipe with a cap for preventing fluctuations during future permeability testing. water will reduce the eventual temperature6) Fill the adapter pipe with clean water. The 4) Connect the BAT IS Sensor to the Filter Tipdirectly after installation to check the function eventualinsulationplacementsoil aftertamp theFilterTipadapter1-inchpipeTamp the soil at the surface around the running down around the 1-inch pipe.be in the interval of approx. 2 - 24h.vandalism.the Filter Tip.capAPPENDIX 2.pipe (distance to be measured from the tip Mark the pre-augered depth on the adapterthe Filter Tip fully seals inside the 1-inch pipe.Make sure that the O-ring at the shoulder of Two pipe wrenches and the weight of two men2) Connect the BAT Vadose Filter Tip to the 1-inch adapter pipe. N.B. Hand tighten only -3) Push the 1-inch pipe gently down to the would normally be enough for pushing downthe friction along the 1-inch adapter pipe (#3-107)1) Fill the pre-augered hole with water to reduce no tools are needed.pre-augered depth. INSTALLATION OF BAT FILTER TIPof the Filter Tip).#3-107