MGF stock an extensive range of hot rolled the UK. MGF ...

1 Tel. 01942 402 704 MGF technical FILETRENCH 2 MGF stock an extensive range of hot rolled U Piles including Arcelor Mittal and Hoesch, making us the largest independent stockist in the AND STRUTSMGF technical to assemble, two sided, hydraulic bracing system designed to be used with steel trench sheets to KRUL]RQWDOO\ EUDFH VPDOO WUHQFKHV IRU WKH VDIH LQVWDOODWLRQ RI XWLOLWLHV 7KH UDQJH FRPSULVHV YH W\SHV RI ZDOHU UDLO DQG WZR VL]HV RI K\GUDXOLF ZDOHU VWUXW WRJHWKHU ZLWK P P DQG P VWUXW H[WHQVLRQ EDUV 7KH V\VWHP FDQ support trench widths of to and is normally installed using excavators. MGF also provide Vertishore, a light weight hydraulic system used to brace small trenches vertically.)DEULFDWHG IURP HLWKHU JUDGH 6 6 VWHHO SUR OHV RU JUDGH 7 DOXPLXP SUR OHV WKH ZDOHU UDLOV DUH attached to the hydraulic struts using simple pin and retaining clip assemblies. Each strut contains a hydraulic ram with between 300mm and 670mm of stroke.

2 Connecting the rams (via hydraulic hoses) to an MGF hand RSHUDWHG K\GUDXOLF SXPS XQLW FRQWDLQLQJ K\GUDXOLF VKRULQJ XLG DOORZV WKH WUHQFK ZLGWKV WR EH TXLFNO\ DQG easily adjusted to suit the excavation dimensions. Once the trench frames are fully assembled and located at the correct line and level, the rams are pre-loaded against the trench sheets using a hydraulic pump. Pre-loading of the legs ensures the frame cannot slip and minimises the extent of potential ground movements. Self sealing quick release valves and mechanical isolation valves ensure that the hydraulic ram pressure cannot be accidently released once installed. Handling and restraining points are provided on each waler to assist assembly / removal and to allow the brace to be supported off MGF restraining chains attached to the trench sheets by can supply the systems with a full range of suitable handling and restraining chains, Edgesafe edge protection panels, Endsafe end protection panels and struts, Laddersafe access platforms and pole ladders, 'DYLWVDIH UHWULHYDO IDOO DUUHVW V\VWHPV K\GUDXOLF SXPS LQVWDOODWLRQ NLWV LQFOXGLQJ ELR GHJUDGDEOH VKRULQJ XLG DQG K\GUDXOLF KRVHV DQG FRQ QHG VSDFHV UHJLPH HTXLSPHQW Manufactured and designed in accordance with BS EN 14653:2005 PARTS 1 and 2 Manually operated Shoring Systems for Groundwork Support and BS 5975 (2008) Code of Practice for Temporary Works Procedures and the Permissible Stress Design of Notes1.

3 Waler and trench strut systems should only be installed and removed by competent persons in accordance ZLWK D VLWH VSHFL F GHWDLOHG GHVLJQ LQVWDOODWLRQ VHTXHQFH DQG 0*) LQVWDOODWLRQ JXLGHOLQHV 1 % 6 WUXWV can be located at a variety of positions along the length of the waler. The exact location of the struts will determine the strength of the waler Installation is normally carried out by lowering the assembled frame to the correct installation level and pre-ORDGLQJ HDFK VWUXW LQ WXUQ WR HQVXUH WKDW WKH IUDPH LV SUHVVHG UPO\ DJDLQVW WKH WUHQFK VKHHWV DQG FDQQRW slip. Max pre-load pressure of 100 Bar (1500psi) must not be Restraining chains are hung off the trench sheets and attached to the waler to assist assembly / removal of the frame and ensure vertical support is provided at all times. All the supplied restraining chains should be installed (min 2 per waler) and adjusted to ensure an even vertical load distribution.

4 Restraining chains should never be used for lifting nor solely relied upon to suspend loads above personnel. 4. Ensure all hydraulic ram isolation valves are closed and all strut pins in place and secured using the retaining clips provided prior to commencing works. 5. Individual walers and struts should be visually inspected for damage, H[FHVVLYH GH HFWLRQ RU ORVV RI UDP SUHVVXUH SULRU WR HQWHULQJ WKH H[FDYDWLRQ 6. Walers and struts should always be installed square and plumb to the excavation walls ensuring contact with all the inward facing trench sheet pans. If this is not possible any gaps must be securely packed by using KDUGZRRG ZHGJHV SULRU WR QDO SUH ORDGLQJ RI WKH K\GUDXOLF UDPV 7. Safe access/egress, edge protection (for personnel) and barrier protection (for plant) should always be Prior to removal of systems all hydraulic rams must be released and retracted to avoid the need for excessive extraction forces and to avoid damaging the No matter how much care is taken during the installation and removal of waler and strut trench systems some ground movement will occur in the areas immediately surrounding the excavation.]]

5 Great care must be taken when specifying these systems for use adjacent to existing structures and Ends of trench runs should always be battered back at a safe angle or end protection panels/struts installed (see section 6). Tel. 01942 402 704 MGF technical FILEWALERS AND 2 MGF Pole LadderMGF Endsafe Panel - See Section 6 MGF Steel WalersMGF Laddersafe - See Section 6 MGF Edgesafe - See Section 6 MGF trench Sheets - See Section AND STRUTSMGF technical 2 Restraining Chain Connection DetailThere are 2 types of chains used, the top frame will use shackle to hook type, while lower frames will use shackle to shackle chain links selected to ensure all restraining chains are evenly Strut Connection DetailWaler struts are connected to the waler via a pin and retaining clip to sheet Connection Detail7KH KRRN WV RYHU WKH VKHHW Handling PointWLL = are lifted and handled by attaching MGF lifting chains to the handling/restraining points as 01942 402 704 MGF technical FILEWALERS AND 2 TypeMedium Duty SteelWaler.

6 & GradeS275 Moment Modulus69cm3 TypeMedium Duty SteelWaler & GradeS275 Moment Modulus105cm3 TypeMedium Duty SteelWaler GradeS275 Moment Modulus171cm36 WHHO 3UR AND STRUTSMGF technical 2 TypeHeavy Duty SteelWaler - GradeS460 Moment Modulus132cm3 TypeMedium Duty AluminiumWaler - Grade6082T6 Moment Modulus111cm3$OXPLQLXP 3UR OHVTel. 01942 402 704 MGF technical FILEWALERS AND 2 Medium Duty Steel WalersSheet to sheet (mm) Weight (kg)CodeL (mm)W (mm)C*MAX (mm)MinMaxAssembled Weight** (kg) * Depends of strut locations** Assembled weight includes 2 No. type 800 strutsMedium Duty Steel WalerHeavy Duty Steel WalerHeavy Duty Steel WalersSheet to sheet (mm) Weight (kg)CodeL (mm)W (mm)C*MAX (mm)MinMaxAssembled Weight** (kg) * Depends of strut locations** Assembled weight includes 2 No. type 800 AND STRUTSMGF technical 2 Medium Duty Aluminium WalerMedium Duty Aluminium WalersSheet to sheet (mm) Weight (kg)CodeL (mm)W (mm)C*MAX (mm)MinMaxAssembled Weight** (kg) * Depends of strut locations** Assembled weight includes 2 No.

7 Type 800 strutsTel. 01942 402 704 MGF technical FILEWALERS AND 280kN Single Acting Hydraulic Ram AssemblyPump UnitsProduct (SA)Capacity20 litresShoring FluidHoughto Safe SF25 Installation Pressure0-1500 psiThe pump is used to extend and retract the waler strut single acting hydraulic rams. The pumps contain bio-degradable Houghto Safe SF25 VKRULQJ XLG 'XULQJ WKH 6 XPPHU PRQWKV WKH VKRULQJ XLG LV diluted with water at a ratio of 3 parts water to 1 part Houghto Safe SF25. In the Winter the mix ratio is 1 recommended installation pressure 1500 psi (100 Bar).6 KRULQJ XLG LV SXPSHG LQWR the full bore side of the piston through the male QRV. Single acting cylinders cannot be retracted using a pump unit and have to be physically closed whilst releasing the male isolation valve is closed to maintain pre-load pressure and before release/connection of QRV CylinderSingle.

8 Working Pressure400 Bar (6000 psi)Test Pressure400 Bar (6000 psi)Approx. Working Stroke800mmAxial SWL80kNMin. FOS (by test)2 Working Temp range -20 C* to +50 CApprox. Pre-Load20kNLocating Pins 18 and 20mm :LQWHU PL[ UHTXLUHG IRU VKRULQJ XLG DW ORZ WHPSV AND STRUTSMGF technical 2 Waler Struts - Hydraulic Single acting (SWL=80kN) Ext. (kg)600 (A) (C) MinMaxWeight (kg) waler hydraulic strut is connected to the waler using a pin and retaining clip waler strut extension is bolted to the hydraulic strut using 4 No. M10 grade bolts c/w nuts and washers. The strut extension is connected to the waler using a pin and retaining clip x CHS Grade S275 Tel. 01942 402 704 MGF technical FILEWALERS AND 2 SWL for Medium Duty Steel Walers at Various Strut AND STRUTSMGF technical 2 SWL for Heavy Duty Steel Walers at Various Strut PositionsSWL for Aluminium Walers at Various Strut PositionsTel. 01942 402 704 MGF technical FILEWALERS AND 2 Aluminium VertishorePre-assembled, light weight, two sided hydraulic waler strut system designed to be installed from ground level directly against a soil face in the vertical plane.]

9 Suitable for trenches up to deep and wide. The System can be installed E\ RQH SHUVRQ DQG LV XVXDOO\ VSHFL HG IRU VKRUW term utilities type trench work where the ground is considered self supporting and capable of arching a min. between preloaded hydraulic vertical supports for the duration of the works. Backing boards are available to prevent localised pockets of loose material entering the excavation. Personnel should only enter and work in the space between two vertishores. A competent person should always inspect the excavation before allowing access to ensure that all the struts are pre-loaded and bearing directly onto the soil, the exposed soil faces are self supporting with no evidence of water ingress or very loose material. Vertical support must be provided at a max. KRUL]RQWDOO\ Always install and remove the system from ground level and away from any potentially unstable edges. Vertishores are supplied with an installation kit, including a pump unit, lowering hook and valve release hydraulic strutsType A : 550-900mmType B: 700-1200mmType C: 800-1400mmSWL = 20kN/m (on Vertishore) * Assembled weight (excluding boards) with type A IDWeight* AND STRUTSMGF technical 2 Waler End Protection StrutWaler Hydraulic Strut and EndSafe Strut Connection PinPin PP EDU PP longMaterial Grade080M40 (EN8)Shear SWL80kNInner Material90x90x4 SHS (S355)Inner Unit Material100x100x4 SHS (S355)Outer Unit Endsafe Struts are suitable for use in smaller excavations when it is not possible to safely batter the ends of the trench back to ground level.

10 The simple telescopic strut system can be easily installed and removed by one person at the end of a waler run to support trench sheets. The pin connecting the inner and outer sections should always be used for safe handling purposes and can be removed once installed. The minimum overlap between the strut inner and outer is Tel. 01942 402 704 MGF technical FILEWALERS AND 2 ^ t > E ^ ^ Safe Working Load for MGF End Protection Struts / / / / Safe Working Load for Waler End Protection StrutsRecommended SWLA rrows indicate recommended inner section lengths to achieve desired range .