Super Bracing Strut User Guide page 1.psd
Contents
1. e Disconnect the pump hoses from the ram and lift the ram from the Hydraulic Unit 17 Maintenance Adjustment of the Hydraulic Unit Screw is considerably eased if the thread is kept well greased oiled 18 General Since our policy is one of continual improvement components may vary in detail from the descriptions given in this publication Page 13 of 13 p majb e y hiren part of tne mabey tamily User Information Appendix A Provision of a Mabey Hire Site Demonstrator Mabey Hire can subject to availability offer the services of a Site Demonstrator However the Customer should note the following A1 The Customers Responsibilities A safe system of work remains the Customers responsibility at all times It is his responsibility to prepare for organise and direct the operation including A1 1 Site induction for the demonstrator A1 2 Preparation of a method statement A1 3 Arisk assessment A1 4 Selection of lifting equipment and any other equipment required to undertake the work A1 5 Positioning of the crane or lifting appliance A1 6 Banking the crane A1 7 Slinging the components A1 8 Assembling the components and installing them A2 Activities which the Mabey Hire Demonstrator is authorised to carry out Mabey Hire Demonstrator is authorised to A2 1 Assist in indentification of Mabey Hire components A2 2 Explain how they fasten together A2 3 Point out slinging points and special methods o2. Pressure Gauge Valve N Neutral A E Extend Male Female Coupling Coupling Extend Hose ote 1 2 BSP Claw connector M A FE Faster ee Pump Air Supply Control Valve Control Valve 16 2 Preliminaries e Check there is sufficient of the Mabey Hire shoring fluid in the tank Only Mabey Hire shoring fluid can be used Set the pump control valve to Neutral e Connect the pump to a suitable air supply 100psi at 14 cu ft min and open the air supply control valve on the pump e Purge the hoses of air To do this connect the hoses together and run the pump for a few seconds with the control valve set to extend When satisfied that any air has been expelled set the pump control valve to neutral At no time must the pump be left operating whilst unattended 16 3 Mabey Hire Shoring Fluid The pump is normally supplied with a full tank of premixed fluid If the e il ind i E fluid is separately supplied neat in 5 litre orange coloured containers it should be poured into the pump and cold clean water added according to Above 0 the prevailing weather conditions see table to the right Protective gloves should always be worn when handling shoring fluid 9 Note A shoring fluid safety data sheet is available on request from Mabey 10 and bel NeatOny eT 10 and below eat Only Page 12 of 13 product user guide QIEEEM gt a Super Bracing Strut oe July 2012 16 4 Procedure
3. for pre loading of the Hydraulic Unit SBS 100 If the strut is required to be pre loaded during installation the following procedure should be carried out after the strut and frames are in their final position Ensure the Hydraulic Unit SBS 100 is installed with its access door uppermost Open the access door and lift the Hydraulic Ram SBS 099 into the Hydraulic Unit using the lifting lugs on the ram Ensure the piston rod of the ram is towards the screw of the Hydraulic Unit Also ensure that the ram sits onto the supports in the Hydraulic Unit and that the piston rod is in line with the end of the screw bar Set the pump control valve to Neutral and ensure the air supply valve is open Connect the pump hoses to the Ram e Open the safety lock off valve on the Ram by rotating anti clockwise Set the pump control valve to retract Note This will actually extend the ram Watch the ram extend until it just touches the end of the screw bar Allow the pressure to build up to the level as indicated by Mabey Hire Engineering Department Shut down the pump by closing off the air supply valve Check that the hydraulic pressure is being maintained on the ram pressure gauge NOTE Do not move the pump control valve to neutral at this point as this will simply release the pressure e Close the safety lock off valve by rotating clockwise Spin the nut along the screw thread and tap tight against the c
4. of the Super Bracing Strut system are fitted with lifting lugs for safe slinging Regular users of Mabey Hire s JC40 Light and Standard Mechanical Bracing Strut systems should note that Super Bracing Strut system components are considerably heavier and generally longer 4 2 Manpower The Health and Safety legislation requires that personnel deployed are suitably trained and experienced and supervised by a competent person The main activities associated with Super Bracing Strut installation are e Unloading the delivery vehicle e Bolting up and pinning steelwork together to form struts of the required length Slinging and lifting struts into position in the excavation and connecting the strut ends onto walings 4 3 Plant and Lifting A suitable appliance is required for off loading and installation For off loading there needs to be sufficient clearance under the main hook to allow lifting with a safe angle between the lifting sling legs WARNING If an excavator is being used for lifting operations refer to safety information on Page 4 If the struts are to be lifted into the excavation then the appliance should be located a safe distance from the edge of the excavation and the lifts and radii checked against the safe lifting capacities of the appliance A surcharge for the excavator must have been allowed for in the excavation brief design Struts should be lifted into the excavation one at a time Likewise for removal struts sho
5. ARE USING A SLING ON AN EXCAVATOR BEWARE THE FOLLOWING It is very important that a means of allowing the sling to swivel be introduced above the master top ring This will allow the sling and in particular the master ring to Attachment turn and align with the load WITHOUT A SWIVEL ARRANGEMENT THE LOAD MAY SEVERELY TWIST THE MASTER RING RESULTING f IN DAMAGE OR FAILURE ne i All lifting accessories attached to the excavator lifting point must hang freely and be free to move at all times TILTING THE HEAD OF THE DIPPER ARM QUICK HITCH UPWARDS MAY PREVENT FREEDOM OF MOVEMENT AND SO TWIST DAMAGE OR FAIL THE LIFTING EQUIPMENT CORRECT INCORRECT Mabey Hire offer an 8 tonne single leg swivel attachment as part of their hire product range Code SSBA 007 Bearing to bearing length 600mm Weight 11kg Please see User Guide for details Page 4 of 13 product user guide art of the mabev family Title Super Bracing Strut 6 Identification of Components Hydraulic Unit 2000 2600mm long Code SBS 100 Weight 800 kg Swivel Plate Assembly Code SBS 014 Size 700 x 300 x 460 Weight 170 kg Super Shaftbrace Connector Bracket Assembly Raking Prop Code SBS 025 Size 520 x 350 x 295 Weight 115 kg Clamp Plate Code MBSP 009 Size 250 x 115 x 20 Weight 6 kg Page 5 of 13 Mechanical Unit 2000 3000mm long Code SBS 200 Weight 650 kg Super
6. Clamp Plate plate SSP M20x110BOLT Raking Prop Connector Bracket to Clamp Plate 10 3 Connection details to 356 x 368 U C Super Shaftbrace Waler Rail Clamp Plate Clamp Plate Connector Plate SBS 019 Pann OE ENS Se ince ooo MBSP 009 a v4 Mechanical Unit Hydraulic Unit 356x368 UC 356x368 UC SBS 200 SBS 100 Super Super Shaftbrace aa ae M20x70 Ig Countersunk Rail ai ere a M20x70 Ig Countersunk socket head screws SBS 020 1120x100 ig gal us g galv DONS socket head screws SBS 020 SBS 027 Bolts SBS 027 Mechanical Unit Arrangement Hydraulic Unit Arrangement Clamp Plate Connector Bracket MBSP 009 Shear Key Connector Plate SBS 019 Clamp Plate Assembly Raking Knee Brace 125mm Clamp Plate SBS 030 Prop SBS 025 356x368 Connector Adaptor MBSP 009 UC Super Assembly SBS 026 356x368 UC Shaftbrace Rail SBS 021 a UC Super 9 M20x70 lg M20x100 lg galv q Countersunk Bolts SBS 027 socket head screws M20x100 lg galv SBS 020 Bolts SBS 027 Shaftbrace Shaftbrace Rail Rail M20x100 Ig galv Bolts SBS 027 Knee Brace Connector Bracket Arrangement Raking Prop Connector Arrangement Plan View 125mm Adaptor Arrangement Note i Always fit 2 No clamp plates one top and one bottom at each waling connection ii If anon standard strut waling connection detail is being used consult Mabey Hire Engineering Department for advice Page 8 of 13 pro
7. Shaftbrace Knee Brace Connector Assembly Code SBS 021 Size 465 x 485 x 305 Weight 136 kg Connector Plate to 356x368 U C Super Shaftbrace Code SBS 019 Size 485 x 340 x 20 Weight 26 kg Super Shaftbrace Raking Prop Clamp Plate Code SBS 030 Size 310 x 105 x 20 Weight 5 kg Issue Date 8 July 2012 Extension Units mm kg Pulling Bracket Code SBS 015 Size 340 x 340 x 25 Weight 25 kg a tf Pre Loading Unloading Ram 880 1500mm lg Code SBS 099 Weight 200 kg Ne Super Bracing Strut eae July 2012 6 Identification of Components Cont d Connector Plate to Supershaft Plus Knee Brace Supershaft Plus Raking Supershaft Plus Connector Assembly Prop Connector Assembly Code SBS 031 Code SBS 032 Code SBS 033 Size 570 x 340 x 20 Size 570 x 465 x 245 Size 680 x 350 x 330 Weight 29 kg Weight 145 kg Weight 155 kg O wee Sa i nd Lifting Chains 125mm Adaptor Supershaft Plus Raking 13mm 4 leg chain sling Code SBS 026 Prop Clamp Plate Assembly Code JCBP 037 Size 600 x 600 x 125 Code SBS 033 SA2 Weight 84 kg Weight 87 kg Size 300 x 115 x 20 Weight 6 kg 7 Stacking and Handling Suitable firm level dry areas should be made available on site for stacking and pre assembly work Suitable lifting equipment of adequate lifting capacity should be provided for off loading pre assembly work installation and dismantling Slinging should always be carried out by suitably exper
8. at each waling connection ii If a non standard strut waling connection detail is being used consult Mabey Hire Engineering Department for advice Page 9 of 13 product user guide QIEEEM gt Ne Super Bracing Strut eae July 2012 11 Assembly The strut is assembled to the correct length range where possible prior to delivery with the clamp plates supplied separately If the strut has to be either finally assembled or altered to another size range on site always use 12 No M24 x 100 long Galv Gr 8 8 bolts c w washers SBS 017 for the main flange connections Note When the strut is horizontal the adjusting pin on the Mechanical Unit should be horizontal and the ram access door on the Hydraulic Unit should be on top Adjusting Pin horizontal Ram Access Door on top SBS 005 gs gt gt J N Mechanical Unit SBS 200 Extension Hydraulic Unit SBS 100 12 Strut Adjustment The strut incorporates two means of adjustment 12 1 The Mechanical Unit The mechanical unit adjusts from 2000mm to 3000mm overall in increments of 50mm between 2000 to 2700mm followed by 2800 2850 and 3000mm To adjust the mechanical unit remove the bolt and locking collar from the adjusting pin and remove the pin Connect the pulling bracket onto the inner section end plate and slide out the inner to the required length using a short chain connection onto the excavator arm Replace the adjusting pin through one of the holes that are a
9. between Super Shaftbrace rails e Use suffix D for connection between Supershaft Plus rails e Use suffix DK for knee brace connection between Supershaft Plus rails Page 7 of 13 product user guide QIBESM hires a Super Bracing Strut oe July 2012 10 Connections Mechanical Unit to Extension 12 No M24 x 100 long galv Gr 8 8 bolts c w washers SBS 017 Extension to Extension Hydraulic Unit to 125mm Adaptor Hydraulic Unit to Mechanical Unit Hydraulic Unit to Extension Connector Plate to Mechanical Unit 4 No M20 x 70 long self colour Gr 10 9 Connector Plate to Hydraulic Unit Countersunk socket head screws c w nuts Connector Plate to 125mm Adaptor SBS 020 Pulling Bracket to Mechanical Unit Pulling Bracket to Hydraulic Unit Knee Brace Connector to Mechanical Unit Knee Brace Connector to Hydraulic Unit 4 No M20 x 75 long galv Gr 8 8 bolts Swivel Plate to Mechanical Unit SHBP M20x75 Swivel Plate to Hydraulic Unit Knee Brace Connector to 125mm Adaptor Raking Prop Connector Bracket to Mechanical Unit Raking Prop Connector Bracket to Hydraulic Unit 10 1 Super Shaftbrace Connections Only Connector Plate to Clamp Plate 2 No M20 x 100 long galv Gr 8 8 bolts per clamp Knee Brace Connector to Clamp Plate plate SBS 027 Raking Prop Connector Bracket to Clamp Plate 10 2 Supershaft Plus Connections Only Connector Plate to Clamp Plate 2 No M20 x 110 long galv Gr 8 8 bolts per clamp Knee Brace Connector to
10. duct user guide Title Super Bracing Strut Issue Date 8 July 2012 10 4 Connection details to 500 x 460 fabricated U C Supershaft Plus Waler Rail Clamp Plate Connector Plate SBS 031 MBSP 009 Mechanical Unit Supershaft Pee ety Plus Rail M20x70 Ig Countersunk socket head screws SBS 020 M20x70 lg Countersunk M20x110 Ig galv Bolts socket head screws SBS 020 SSP M20x110BOLT Mechanical Unit Arrangement Connector Bracket Assembly Raking Prop SBS 033 SA1 Clamp Plate SBS 033 SA2 Swivel Plate Pin SBS 014C Supershaft Pin Retainer SBS 006 Plus Rail M16x140 lg galv bolt SBS 018 Swivel Plate M20x110 Ig galv Bolts SSP M20x110BOLT Raking Prop Connector Arrangement Male SBS 014B Clamp Plate MBSP 009 Shear Key Knee Brace Connector Assembly SBS 032 Supershaft Plus Rail M20x110 Ig galv Bolts SBS M20x110BOLT Knee Brace Connector Bracket Arrangement Plan View Connector Plate SBS 031 Clamp Plate MBSP 009 Hydraulic Unit SBS 100 Supershaft Plus Rail M20x110 lg galv Bolts SSP M20x110BOLT Hydraulic Unit Arrangement Connector Plate SBS 031 125mm Clamp Plate Adaptor MBSP 009 SBS 026 Supershaft M20x70 lg Plus Rail Countersunk g socket head f screws M20x110 Ig galv Bolts SBS 020 SSP M20x110BOLT 125mm Adaptor Arrangement Note i Always fit 2 No clamp plates one top and one bottom
11. f lifting as noted in the user information A2 4 Demonstrate how to attach hoses and use pumps to extend retract hydraulic braces A2 5 Draw attention to the content of the user information A2 6 Clarify queries with Mabey Hire scheme drawings The Demonstrator is NOT AUTHORISED to take over or direct the installation To Mabey Hire Limited From Address Site Tel No o o o Fax Now o Tel No Fax No Provision of a Mabey Hire Demonstrator on site We confirm receipt of your User Information Appendix A and that we would like to request the services of your Demonstrator on date s Signed Name Date
12. he use of bracing struts Mabey Hire offer a design service and can on request also provide information on the strength capacities of the Super Bracing Strut for clients undertaking their own designs 3 Strut Adjustment See Section 12 for further details The strut incorporates two methods of adjustment e The Mechanical Unit offers coarse adjustment by means of a pin and has an overall length of 2000mm min to 3000mm max e The Hydraulic Unit incorporates a mechanical screw for fine length adjustment and has an overall length of 2000mm min to 2600mm max A hydraulic ram can be fitted into the unit to aid removal of the strut if required Page 1 of 13 product user guide p mlalbjely niren g Super Bracing Strut eae July 2012 4 General Guidance Notes 4 1 Safe System of Work and Method Statement Assuming that the location plan size and depth of an excavation together with an arrangement of sheets and frames has already been determined the Health and Safety at Work Act requires that a safe system of work is adopted to carry out the work on site These guidance notes are intended to draw the client s attention to practical aspects of Super Bracing Strut installation which need to be considered in drawing up method statements for a safe system of work In particular the client s attention is drawn to the lengths and weights of the strut members and the need for planning the lifting operations involved All major components
13. ienced and competent personnel Weights of components are given above Weights of complete assembled struts are given on page 7 Return pre assembled struts as supplied from Mabey Hire s depot Always stack struts in single layers wherever possible 8 Transportation e Ensure the mechanical unit is fully retracted with the pin locking collar and bolt tightly secured e Ensure the hydraulic unit is fully retracted with the locking pin in position and secured e Ensure all equipment is loaded to the satisfaction of the lorry driver and securely chained strapped to the lorry Page 6 of 13 a Super Bracing Strut oe July 2012 9 Table of Standard Strut Assemblies Non standard strut assemblies may be available on request L between walings D a LO E eX 5 lt Strut Configuration for Standard Struts mm sesmar emo rowan a Cy a a Co ce SBSTRUT 04 1000 1890 SBSTRUT 06 1000 2000 2440 SBSTRUT 07 4000 2450 SBSTRUT 08 4000 1000 2810 4000 2000 3000 1000 4000 2000 3360 SBSTRUT 12 8000 1000 SBSTRUT 13 Mechanical Unit 8000 2000 Mechanical Unit Mechanical Unit Mechanical Unit Mechanical Unit Mechanical Unit SBSTRUT 09 Mechanical Unit SBSTRUT 10 SBSTRUT 11 Mechanical Unit Mechanical Unit Mechanical Unit Struts should always be assembled as indicated in the table above e Note Use suffix C for connection between Super Shaftbrace rails e Use suffix K for knee brace connection
14. lient If during the excavation it is noted that the actual ground conditions and or ground water levels differ from those provided at design stage it is advisable to have the scheme rechecked 4 7 After Excavation Works are Completed Plan for edge protection to be installed as early as possible Regularly inspect the excavation for signs of excessive movements of sheets or walings Check the hydraulic walings for signs of fluid leakage Keep plant spoil heaps and stored materials well clear from the edge of the excavation 4 8 Return of Equipment Off Hire Clients should ensure that on removal the equipment is returned clean in lengths as supplied 4 9 Transportation Ensure all equipment is loaded to the satisfaction of the lorry driver and is securely chained strapped to the lorry 4 10 References 4 10 1 Legislation The Health amp Safety at Work Act 1974 The Management of Health and Safety at Work Regs M H S W 1999 The Construction Design and Management Regulations 2007 The Control of Substances Hazardous to Health COSHH Regulations 1994 The Lifting Operations and Lifting Equipment Regulations LOLER 1998 The Provision and Use of Work Equipment Regulations PUWER 1998 Work at Height Regulations 2005 Noise Manual Handling 4 10 2 HSE Guidance Health and Safety in Construction HSG150 rev A Guide to Managing Health and Safety in Construction ISBN 0 7176 0755 0 Health and Safety in Excavations Be Safe and Sho
15. ligned between the outer and inner sections and secure in position with the locking collar and bolt Remove the pulling bracket BEFORE PROCEEDING DOUBLE CHECK THAT e The mechanical unit is correctly set to the length required e The adjusting pin is correctly replaced and secured with the locking collar and bolt eau A Locking Collar and Bolt ee SBS 006 and SBS 018 Direction of Pu l Adjusting m INCrements Pin SBS 005 Page 10 of 13 product user guide m alblely aire Ne Super Bracing Strut eae July 2012 12 2 The Hydraulic Unit Extension The hydraulic unit adjusts from 2000 to 2600mm overall To adjust the hydraulic unit remove the inner outer locking pin connect the pulling bracket onto the screwed inner end plate and slide out the inner to the required length using a short chain connection onto the the excavator arm When the unit is set to the required length spin the nut along the thread until it makes contact with the end of the outer section BEFORE PROCEEDING DOUBLE CHECK THAT The hydraulic unit is correctly set to the length required 12 3 The Hydraulic Unit Preloading By fitting the hydraulic cylinder into the hydraulic unit during installation the cylinder can be pressurized when the strut is in its final position thus preloading the waling The nut can then be spun along the thread until it makes contact with the end of the outer section and the cylinder retracted and remo
16. ng in polythene Page 11 of 13 product user guide mialble y aires Ne Super Bracing Strut eae July 2012 15 Removal e Ensure operatives have adequate access to the strut e Support the struts from below or sling with a suitable crane before attempting to release the hydraulic screw unit e The hydraulic unit incorporates a mechanical screw inner which is designed to retract under conditions of no or low loading e g as the strut becomes redundant after backfilling the excavation To free the nut it may be necessary to strike the blocks of the nut with a 7lb sledge hammer as shown below If however the strut is still sustaining significant loads a hydraulic cylinder can be placed into the body of the unit pressurised just enough to free the nut which can then be spun along the thread out of the way and the hydraulic cylinder slowly retracted to retract the screw inner Refer to section 16 for further details of this procedure e Once the strut is released remove the lower clamp plates only and lift the strut clear of the excavation 16 Mechanical Pump SSBA 003 Details and use of Hydraulic Ram SBS 099 16 1 Introduction It is advisable before commencing installation to read the notes below to become familiar with the procedures involved The diagrams below show the pump control gauge hose connections and safety lock off valve referred to in the procedures ie ian Retract Hose Port for Safety Lock Off RS len aed
17. ollar on the end of the Hydraulic Unit Set the pump control valve to neutral and open the air supply valve Slowly open the safety lock off valve to release the hydraulic fluid pressure and allow fluid to flow back through the pump Set the pump control valve to extend Note This will actually retract the ram Allow the piston to fully retract into the ram On completion of retraction close off the air supply valve and set the pump control valve to neutral Disconnect the pump hoses from the ram and lift the ram from the Hydraulic Unit e Close the Hydraulic Unit access door 16 5 Procedure for Removal of the Strut If the strut is sustaining significant loads and the nut cannot be moved the following procedure should be carried out e Repeat the first 7 steps under Section 16 4 above e Allow the pressure to build up until the nut on the Hydraulic Unit can be released e Spin the nut along the screw thread away from the Hydraulic Unit collar e Move the pump control valve to neutral This will release the pressure and allow the ram to retract with the screw bar following e When the load in the screw bar becomes negligible the ram will stop retracting e Set the pump control valve to extend Note This will actually retract the ram e Allow the piston to fully retract into the ram e Oncompletion of retraction close off the air supply valve and set the pump control valve to neutral
18. product user guide ne Super Bracing Strut man July 2012 Contents Page 1 Introduction Design Strut Adjustment Page 2 4 General Guidance Notes Page 5 Identification of Components Page 6 Identification of Components Cont d Stacking and Handling Transportation Page 7 Table of Standard Strut Assemblies Page 8 9 Connections Page 10 Assembly Strut Adjustment Page 11 Installation Precautions During Use Page 12 Removal Mechanical Pump Details and use of Hydraulic Ram Page 13 Maintenance General Appendix A Provision of a Mabey Hire Site Demonstrator 1 Introduction Mabey Hire s Super Bracing Strut is intended for use in horizontal strutting knee brace and raking prop applications Standard components are designed to be used in conjunction with the Super Shaftbrace and Supershaft Plus waling systems This booklet provides basic information about the strut and should be read in conjunction with the user information for the Super Shaftbrace or Supershaft Plus systems if required The struts are not intended for other applications For details of other bracing struts within Mabey Hire s range refer to the appropriate set of user information Refer to Appendix A for details of our site demonstrator service 2 Design No information on design is included in this booklet Clients are strongly advised to ensure that a competent engineer is employed to provide a suitable design for excavation schemes requiring t
19. re HSG185 Safe Work in Confined Spaces Regulations Approved Code of Practice and Guidance L101 Five Steps to Risk Assessment INDG 163 Excavators Used as Cranes Guidance Note PM42 4 10 3 Other Guidance CPA Guidance Safety in Shoring The Proprietary Shoring and Piling Equipment Manual CPA STIG Guidance STIG 0201 Selection of Proprietary Shoring Equipment CPA STIG Guidance TIN 203 The Use of Restraining Chains to Support Shoring Equipment CPA STIG Guidance TIN 204 The Correct Use of Lifting and Other Attachment Points for Shoring Equipment CPA Safety Guidance Risk Assessment SG 003 CPA Guide Ref No SG001 3 Guidance on Lifting Operations in Construction When Using Excavators CIRIA Report R166 CDM Regulations Work Sector Guidance for Designers CIRIA Report 97 Trenching Practice CIRIA Special Publication 131 Crane Stability on Site CIRIA Special Publication 95 The Design and Construction of Sheet Piled Cofferdams 4 10 4 British and European Standards BS 6031 2009 Code of Practice for Earthworks BS EN 996 1996 Piling Equipment Safety Requirements BS EN 1997 1 2004 Code of Practice for Foundations BS 5228 1 2009 Code of Practice for Noise and Vibration Control on Construction and Open Sites Noise BS 5228 2 2009 Code of Practice for Noise and Vibration Control on Construction and Open Sites Vibration Page 3 of 13 product user guide p miaiblely hires 5 Sling Warning WARNING IF YOU
20. uld be removed one at a time 4 4 Small Plant Tools and Lifting Chains for Handling Essential equipment requirements are e A compressor with 100 p s i output and sufficient length of air line to power the pump The pump is fitted with a standard 1 2 BSP air hose claw connector e Sledgehammers for making pinned connections e Podgers spanners for making bolted connections Bolt sizes are M20 and M24 e Lifting chains of suitable length and capacity and with current certification The struts have lifting lugs designed to take 13mm safety hooks e Ladders and possibly other provisions to provide safe access into the excavation to connect pump hoses In most cases the centre of gravity of the lifts involved will not be at mid length so shortening clutches are advisable Mabey Hire have a range of 2 and 4 leg chain slings available for hire Clients should check that the leg lengths of the chain is suitable to use with their lifting appliance 4 5 Access Hard Standing Areas and Site Storage These include e Suitable area to off load the lorry and assemble the struts e Suitable hard standings for the lifting appliance to operate from if it is intended to lift the struts into the excavation Page 2 of 13 product user guide Ne Super Bracing Strut eae July 2012 4 6 During Excavation Works on Site If Mabey Hire have designed the sheeting and frame arrangement for the excavation they will have used ground data provided by the c
21. ved from the strut refer to section 16 for further details of this procedure l wad Inner Outer Locking Pin Hinged access door to install remove cylinder SISTA N Z a Enlarged View of Hydraulic Unit Locking Pin Detail SBS 100 Pulling Bracket SBS 015 Direction of w 13 Installation e Ensure walings have been set to the required dimensions and pressurized if necessary before installing the struts Measure the dimension between the walings Ensure operatives have adequate access to the strut in its final position Extend the Mechanical and Hydraulic End units as equally as possible see section 12 for details to achieve the required strut length Fit the top clamp plates leaving the bolts slightly loose Sling and lift the strut horizontally into position so that the top clamp plates are correctly located over the flanges of the walings Check that the strut is square to the walings and that the strut and waling centrelines are in line Adjust the hydraulic unit screw so that the connector plates are tight against the walings Fit the bottom clamp plates Tighten all the bolts to the clamp plates Remove the lifting chains 14 Precautions During Use e Check that all bolted connections remain tight e Avoid striking the struts or laterally loading them by storing materials on them or by hanging or propping from them e Protect the screw thread from concrete spillage etc by wrappi
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