Hi-Clear Box System

Our Hi-Clear Box is ideal for the larger pipes and culverts.

With a bottom spindle allowing a maximum clearance of 2290mm, there is not much this box can’t do!

SPINDLE CLEARANCE

  • 1690mm
  • 1990mm
  • 2290mm

For more information on our box systems range please contact your nearest Site Equipment office today.

A forklift/machine must be provided to off load the kit from the delivery vehicle. Alternatively SEL can deliver the equipment

Bottom Strut
Setting
Pipe Clearance
Beneath Struts hC
(m)
Trench Width [b] v Permissible
Earth Pressure [kN/m²]
< 2.0m< 2.5m< 3.0m< 3.5m< 4.0m< 4.5m
High2.2921.821.818.515.2Contact SEL if a width
> 3.5m requires the
high strut setting
Medium1.9939.535.029.525.020.516.5
Low1.6945.645.641.035.028.522.5
Box Length
L
Panel Height
H
Maximum Weight per complete box
mmkg
Mini-0.0Midi-0.0Maxi-0.0Maxi-0.5Maxi-1.0Maxi-1.5Maxi-2.0Maxi-2.5Maxi-3.0
4.03.15 Base345534833516359536743753383339123991
1.4o Top142514381455149515351574161416531693
NB: The 1.4m Top panel is from our Standard Trench Box Range

Spindle Chart

Box
Spindle
Type
Trench Box / Hi-Clear Box
Internal WidthExternal Width
bCb
mm
Mini-0.00.65 – 0.750.85 – 0.95
Mini-0.51.15 – 1.251.35 – 1.45
Mini-1.01.65 – 1.751.85 – 1.95
Mini-1.52.15 – 2.252.35 – 2.45
Mini-2.02.65 – 2.752.85 – 2.95
Mini-2.53.15 – 3.253.35 – 3.45
Mini-3.03.65 – 3.753.85 – 3.95
Midi-0.00.83 – 1.021.03 – 1.22
Midi-0.51.33 – 1.521.53 – 1.72
Midi-1.01.83 – 2.022.03 – 2.22
Midi-1.52.33 – 2.522.53 – 2.72
Midi-2.02.83 – 3.023.03 – 3.22
Midi-2.53.33 – 3.523.53 – 3.72
Midi-3.03.83 – 4.024.03 – 4.22
Maxi-0.00.98 – 1.261.20 – 1.48
Maxi-0.51.48 – 1.761.70 – 1.98
Maxi-1.01.98 – 2.262.20 – 2.48
Maxi-1.52.48 – 2.762.70 – 2.98
Maxi-2.02.98 – 3.263.20 – 3.48
Maxi-2.53.48 – 3.763.70 – 3.98
Maxi-3.03.98 – 4.264.20 – 4.48
For 4.50m long Trench boxes, add 40mm to the ‘External Width’ column.

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