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Summary of Contents for Geosense Quick Joint
- Page 1 INCLINOMETER V1.4 March 15 CASING QUICK JOINT (QJ)
- Page 2 V1.4 March 15...
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Page 3: Table Of Contents
V1.4 March 15 CONTENTS Page 1.0 INTRODUCTION Applications Advantages 2.0 CONFORMITY 3.0 MARKINGS 4.0 DELIVERY Packaging Handling Inspection Storage 5.0 COMPONENTS & ASSEMBLY QJ Casing sections End caps 5.2.1 Standard cap 5.2.2 Grout valve cap 5.2.3 Grout anchor cap 5.2.4 Grout anchor with valve cap 5.2.5 Top cap... - Page 4 V1.4 March 15 CONTENTS Page INSTALLATION - VERTICAL FILL INSTALLATION - HORIZONTAL Preparation for installation Within re-bar cage Dead-end pulley Within trench 10.0 SPECIFICATION 11.0 SPARE PARTS 12.0 RETURN OF GOODS 13.0 LIMITED WARRANTY...
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Page 5: Introduction
It is available in standard 3 & 1.5 metre lengths with QJ (Quick Joint) flush couplings at each end which can be easily pushed together to provide a watertight self locking joint while maintaining precise groove alignment and high collapse resistance. -
Page 6: Conformity
V1.4 March 15 2.0 CONFORMITY This product is NOT covered by any CE directives and therefore CANNOT be CE marked. 3.0 MARKINGS QJ Inclinometer Casing is labelled with the following information:- • Manufacturers website address • Manufacturers telephone number • Direction of installation arrows •... -
Page 7: Delivery
V1.4 March 15 4.0 DELIVERY ® This section should be carefully read by all users of Geosense QJ Inclinometer Casing. 4.1 Packaging QJ Inclinometer Casing is packed in protective cardboard boxes for transportation to site. Packaging is suitably robust to allow normal handling by transportation companies. -
Page 8: Components & Assembly
V1.4 March 15 5.0 COMPONENTS & ASSEMBLY ® This section of the manual is intended for all users of Geosense QJ Inclinometer Casing and is intended to provide guidance with respect to its installation. It must be remembered that no two installations will be the same and it is inevitable that some ‘fine tuning’... - Page 9 V1.4 March 15 5.0 QJ sectios contd.. QJ INCLINOMETER CASING SHOULD BE INSTALLED WITH THE MALE END DOWNWARDS Lengths of Casing should be joined together as follows:- STEP 1 Place male end into female end with locating peg on the male end aligned with the keyway on the female end.
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Page 10: End Caps
V1.4 March 15 5.2 End caps Before installing the QJ Inclinometer Casing a bottom cap should be fitted. Various options are available as follows:- 5.2.1 QJ standard end cap (A) To be used where no problems with uplift are expected and a separate external Tremie tube is to be used. -
Page 11: Grout Anchor Cap
As 5.2.3 above but fitted with an integral grout valve as in 5.2.2 THE APPROPRIATE END CAP TYPE SHOULD BE CHOSEN ACCORDING TO THE APPLICATION IF IN DOUBT PLEASE CONTACT GEOSENSE FOR ADVICE JOIN TOGETHER AS DESCRIBED ON PAGE 7... -
Page 12: Top Cap
V1.4 March 15 5.2.5 Top cap Once all the inclinometer Casing sections have been installed it is recommended that a removable push fit top cap be fitted to protect the installation from the ingress of debris. 5.2.6 Protection In order to protect the complete installation from damage it is recommended that a steel protective steel cover be placed over the top and concreted in. -
Page 13: Telescopic Joint
V1.4 March 15 5.3 Telescopic joint Telescopic joints are generally used in situations where man made fills are constructed such as embankments and dams and should be used where settlements of over 2% are expected. Total settlement up to 30% can be accommodated. Each telescopic joint allows for 150mm vertical movement thus avoiding any buckling of the Casing due to excessive axial loading. -
Page 14: Repair Coupling
V1.4 March 15 5.4 Repair coupling In the event that a section or end joint becomes damaged it can be repaired using a special repair coupling as Follows:- STEP 1 - cut off the damaged part of the Casing as square as possible and remove all burrs. -
Page 15: Gxm 300I Combined Settlement System
V1.4 March 15 5.5 GEO-XM 300I settlement ® Geosense QJ inclinometer Casing can also be used as part of the GEO-XM 300I magnetic settlement system. An outer corrugated sleeve is used to isolate the inclinometer Casing from any settlement in the... -
Page 16: Installation Planning
6.0 INSTALLATION PLANING 6.1 Installation considerations - all types ® Prior to installation of Geosense QJ Inclinometer Casing it is essential to establish and confirm details of the installation to be carried out. Some of the main considerations are listed below :-... -
Page 17: Alignment
V1.4 March 15 6.2 Alignment One set of grooves should be aligned with the expected direction of movement as below. Direction of expected ground movement Groove alignment NEVER TRY TO TWIST OR PUSH THE CASING FROM THE TOP AS THIS WILL CAUSE TORSION, TWIST AND SPIRALLING OF THE GROOVES 7.0 INSTALLATION - Vertical borehole 7.1 Borehole depth &... -
Page 18: Installation Overview
V1.4 March 15 7.2 Installation overview It is recommended when installing into a vertical borehole, to use pipe clamps to install QJ Inclinometer Casing as there may be a risk of loosing the Casing down the borehole. In dry boreholes (particularly deep ones) a safety line should be attached to the base of the Casing to provide additional security and a way to retrieve the Casing if necessary. -
Page 19: Buoyancy
V1.4 March 15 7.3 Buoyancy QJ Inclinometer Casing will be buoyant if the borehole is filled with water or grout and should therefore be filled with water to counteract this. The addition of grout to the borehole will however make the Casing become buoyant again as grout is denser than water and becomes worse the denser the grout used. - Page 20 V1.4 March 15 7.4 Grouting contd… Grout strength decreases with water-cement ratio and controlling this ratio is the most important factor for grouting and it is therefore recommended that the water and cement is mixed first. Water and cement ratios greater than 0.7 - 1.0 by weight will segregate without the addition of Bentonite or other filler to keep the cement in suspension and it is recommended that Bentonite normally be used as it is readily available.
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Page 21: Grouting Methods
V1.4 March 15 7.5 Grouting Methods 7.5.1 Pre-grouting with external grout pipe The following steps should be carried out when pre-grouting the borehole:- 1.) Flush out the borehole with clean water and check the depth. 2.) Lower the grout pipe to the bottom of the borehole. 3.) Pump in the grout to fill the borehole then and remove and flush out the grout pipe. -
Page 22: Post-Grouting With External Grout Pipe
V1.4 March 15 7.5.2 Post-grouting with external grout pipe The following steps should be carried out when post-grouting the borehole:- 1.) Flush out the borehole with clean water and check the depth. 2.) Attach the relevant end cap to the bottom of the Casing to the required depth. 3.) Add water to the Casing to counteract buoyancy and/or grout pressure. -
Page 23: Post-Grouting With A Grout Valve
V1.4 March 15 7.5.3 Post-grouting with a grout valve Grout valves are generally used when Casing is installed in small diameter boreholes that do not allow the use of an external grout pipe and is fitted with a non-return valve and a male Quick Release fitting. -
Page 24: Installation Procedure
V1.4 March 15 7.6 Installation procedure - Vertical borehole It is important that the first section is installed into ground where no movement is anticipated and thus acts as a datum. Once prepared install the Casing as follows:- 7.6.1 First section STEP 1 - Locate the peg on the first length of Casing into the slot on the bottom cap... - Page 25 V1.4 March 15 7.6.1 First section contd... STEP 4 - If using the post-grouting method with external tremie tube, the tremie tube will need to be secured to the Casing as shown. PRIOR TO INSTALLING THE CASING IT IS RECOMMENDED THAT THE TEMPORARY CASING IS LOOSENED TO AID IN ITS REMOVAL ONCE THE BOREHOLE IS GROUTED.
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Page 26: Subsequent Sections
V1.4 March 15 7.6.2 Subsequent sections STEP 7 - Holding the first length securely , line up the peg and location groove and push the second length firmly into the first length. STEP 8 - Secure the joint by applying adhesive cloth tape around the joint STEP 9 - Lower the Casing into the hole... - Page 27 V1.4 March 15 7.6.2 Subsequent sections contd... STEP 10 - Add additional lengths if required using previous instructions THE CASING MAY NEED TO BE FILLED WITH WATER TO COUNTERACT ANY BOYANCY. STEP 11 - Place the top cap onto the top of the Casing and tape into place to protect from debris entering the Casing.
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Page 28: Orientation
V1.4 March 15 7.7 Orientation MAKE SURE THAT THE ORIENTATION OF THE GROOVES IS CORRECT. 7.8 Removing temporary Casing ALWAYS REMOVE THE TEMORARY CASING USING A STRAIGHT UPWARD LIFT DO NOT TWIST AS THIS COULD CAUSE TWIST IN THE INCLINOMETER CASING 7.9 Protection Once the Casing is installed ensure a... - Page 29 V1.4 March 15 8.0 INSTALLATION - VERTICAL FILL Inclinometer Casing is often installed in vertical fills such by adding lengths of Casing as the filling progresses for applications such as embankments and dams. It is recommended to use 1.5m lengths for this application. In these applications settlements are expected and the use of telescopic joints or a corrugated external sleeve (see GXM-300) should be used.
- Page 30 V1.4 March 15 9.0 INSTALLATION - Horizontal Typical installations where Casing is installed horizontally are:- • Foundation slabs - within reinforced concrete • Underneath embankments - within trench 9.1 Preparation for installation Before the installation starts ensure that the following items are available:- •...
- Page 31 V1.4 March 15 9.2 Installation horizontally within a Rebar Cage contd… STEP 1 - mark the steel at the level the Casing needs to be installed. The top of the Casing height should be used as it will be easier to see when installing. If the cage is already in place marks should be made on the rebars using levelling techniques.
- Page 32 V1.4 March 15 9.2 Installation horizontally within a Rebar Cage contd... STEP 4 - repeat as steps 2 & 3 at the other end of the first length of Casing and then tie wire should be used to fix the Casing permanently. STEP 5 - add the next piece of Casing by aligning the locating peg o the male end into the keyway on the female end and pushing them together until the joint “snaps”...
- Page 33 The installation of the inclinometer Casing will depend on the application and ground Conditions. ® Please contact Geosense for advice. 9.4 Installation within a trench The trench should be excavated with a small gradient (~0.5%) to allow drainage and the bottom should be flat.
- Page 34 V1.4 March 15 10.0 SPECIFICATION CASING SPECIFICATION Material ABS (Acrylonitrile-butadiene-styrene) Groove spiral < 0.5 degree/3m Tensile strength 40 MPa Coefficient of linear thermal expansion 9 x 10 mm/mm °C Flexural modulus @ 23 deg C 20 Kg/cm² Collapse resistance ~ 2000kPa Temperature range -20°C to +70°C Colour...
- Page 35 V1.4 March 15 10.0 SPARE PARTS As inclinometer Casing is non-retrievable there are no spare parts as such but additional ® components of a Geosense QJ Inclinometer Casing installation which can be added if required and are as follows:- •...
- Page 36 11.2 Packaging and Carriage All used goods shipped to the factory must be sealed inside a clean plastic bag and ® packed in a suitable carton. If the original packaging is not available,Geosense should ® be contacted for advice.Geosense will not be responsible for damage resulting from inadequate returns packaging or contamination under any circumstances.
- Page 37 Unauthorised alteration and/or repair by anyone which, causes failure of the unit or associated components will void this LIMITED WARRANTY in its entirety. ® The Purchaser warrants through the purchase of the Geosense QJ Inclinometer Casing equipment that he is familiar with the equipment and its proper use. In no...
- Page 38 V1.4 March 15 Geosense Ltd Nova House . Rougham Industrial Estate . Rougham . Bury St Edmunds . Suffolk . IP30 9ND . England . Tel: +44 (0) 1359 270457 . Fax: +44 (0) 1359 272860 . email: info@geosense.co.uk . www.geosense.co.uk...
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