MINI BOX

Base TopLength 3.0m 3.0mHeight 2.0m 1.0Weight 1,000Kgs 500Minimum trench width 0.8m 0.8m

Maximum trench width:Without extension bars 1.24m 1.24With extension bars 4.5m 4.25

Clearance beneath bottom strut 1.18m -Maximum safe working load (KN/M2 25 25

STANDARD BOX

Base TopLength 3.4m 3.4mHeight 2.6m 1.3mWeight 1,827Kgs 1.050Minimum trench width 0.945m 0.945m

Maximum trench width:Without extension bars 1.385m 1.24With extension bars 4.5m 4.25

Clearance beneath bottom strut 1.45m -Maximum safe working load (KN/M2 34.1 34.1

MAGNUM BOX

Base Extra Base TopLength 3.4m 4.0m 3.4Height 4.0m 4.0m 1.3mWeight 2,900Kgs 3,150Kgs 1,050KgsMinimum trench width 0.945m 0.945m 0.945m

Maximum trench width:Without extension bars 1.385m 1.385 1.385With extension bars 4.5 4.5m 4.5m

Clearance beneath bottom strut 2.45 2.45m -Maximum safe working load (KN/M2 34.1 30 34.1

SPINDLE ASSEMBLY

Part No. Description1 Spindle Housing (L/R)

2 Spindle (L/R)3 Extension Bar4 Shock Absorber

5 Locating Plate6 Locating Plate Bolt & Nut M20 * 507 Extension Bar Bolt & Nut ( upper ) M16 *55

8 Shock Absorber Bolt & Nut ( upper ) M12 *559 Shock Absorber Bolt & Nut ( lower ) M20 *18010 Grease Nipple

11 Spindle Dust Cap12 Spindle Housing Dust Cap

FITTING EXTENSION BARS

If 3 or more extension bars wide it is more convenient to fit 2 bars to the side of the box which is left laying on the ground and the other bars to the side which has been removed, then joining the two side together can be done at a more convenient height

REMOVAL OF EXTENSION BARSLay the box on its side and reverse the previous operations

METHOD OFTURNING BOXES

SETTING BOXES TO CORRECT WIDTH

Base Unit

Set the width of the top struts to the trench width you require by inserting the winding bar either between the flanges of the spindles, if no extension bars are used or through the hole in the extension bars and screwing the spindles in or out as required. Note it is easier to adjust the spindles if each spindle is wound out a little at a time. Continue adjusting all the spindles until the top of the box is set to the correct trench width measuring from the outside of the panels.

Set the cutting edge of the box to 35 - 40mm wider than the top of the box by adjusting the bottom spindle.

Top Unit

Set these to the same width as the top of the base unit.

PLEASE NOTE:Do not lift box thus!!

INSTALLATION

•Check all nuts & bolts on units are right

•Check that the box is set to the correct width and that the cutting edge is 35 -40mm wider than the top of the box

•Dig a trench approximately 600mm to 1000mm deep to the correct trench width on the line of the excavation and using the 4: leg chain sling place the box in the trench

•By digging within the units and pushing down on the vertical soldiers, the boxes can be sunk to the required depth. In heavy soil conditions this may be made easier if the bucket of the excavator is filled with excavated material

ALWAYS PUSH ON THE SOLDIERS NEVER ON THE TOP OF THE PANELS

NOTE: The shock absorber system on boxes allows the panels of the boxes to moved independently of each other. The maximum movement of the panels form the horizontal is 100% of the width of the box, this must never be exceeded.

When pushing on the soldiers always push down on each side in sequence, never push soldiers positioned diagonally, I.e 1 & 2 or 3 & 4, never 1 & 3 or 2 & 4.

•As the excavation progress top units should be added to the base units. Top units should be used with the shock absorber to the top of the spindles.

•Always ensure that the correct connectors are fitted and the pins are inserted.

•When the excavation is complete and the box sunk to full depth always ensure that the struts are left in the horizontal position. WE also suggest that a small gap be left between boxes to allow them to be moved about to facilities extraction from the trench.

•If using the boxes for the construction of a manhole or pit, it is essential that the struts are not used as shoring, for the trench sheets supporting the ends if the excavation. We suggest that large timbers be cut to the width of the excavation and that these should be supported from the ends of the panels and not the cross struts.

OPERATING SEQUENCE

EXTRACTIONWhen pipe laying has been completed the units can be extracted gradually as backfilling progresses. The simple leg chain should be used to free the box from the excavation. Once the box is free, two legs of the 4-leg chain can be attached to one of the panels to pull this side up and the operation repeated on the other side

When the box becomes very free attach one leg of the 4-leg chain to each corner to lift the box from the excavation.

NOTE:

The shock absorber system on the boxes allows the panels of the boxes to be moved independently of each other. The maximum movement of the panels from the horizontal is 10% of the width of the box. This must never be exceeded.

When boxes are installed they must always be positioned with the strut in the horizontal position.

CHAINS

Mini Boxes without extension bars

4-Leg Chain

Diameter of chain 7mmLength of chain 2.0mHooks LatchlockSWL 4,200KgsWeight 13Kgs

Mini Boxes up to 4.5 meters maximum width

4-Leg Chain

Diameter of chain 7mmLength of chain 3.6Hooks Latchlock & shortening

clutchesSWL 4,200KgsWeight 20Kgs

Standard boxes and Magnums up to 2.5 meters wide

4-Leg Chain

Diameter of chain 10mmLength of chain 2.5Hooks “C” hooksSWL 9,000KgsWeight 37Kgs