Description
Our hi-clear box system is is ideal for the installation of larger pipes and culverts, providing large clearances below the lowest spindles. The robust design makes this box suitable for most environments.
With three adjustable spindles, the hi clear box can achieve widths of 0.85 – 4.48m using a combination of extension pieces. Temporary works design is also available for this trench box range.
Spindle Clearance
With a bottom spindle allowing a maximum clearance of 2290mm, there is not much this box can’t do:
Hire or buy a Hi-Clear Box System
For more information on our box systems range please contact your nearest depot or call us on 0117 982 8236 to get our latest rates.
A forklift/machine must be provided to off load the kit from the delivery vehicle. Alternatively SEL can deliver the equipment
Permissible Earth Pressure
Bottom Strut Setting | Pipe Clearance Beneath Struts hC (m) | Trench Width [b] v Permissible Earth Pressure [kN/m²] |
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< 2.0m | < 2.5m | < 3.0m | < 3.5m | < 4.0m | < 4.5m |
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High | 2.29 | 21.8 | 21.8 | 18.5 | 15.2 | Contact SEL if a width > 3.5m requires the high strut setting |
Medium | 1.99 | 39.5 | 35.0 | 29.5 | 25.0 | 20.5 | 16.5 |
Low | 1.69 | 45.6 | 45.6 | 41.0 | 35.0 | 28.5 | 22.5 |
Max weight per complete box
Box Length L | Panel Height H | Maximum Weight per complete box |
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m | m | kg |
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Mini-0.0 | Midi-0.0 | Maxi-0.0 | Maxi-0.5 | Maxi-1.0 | Maxi-1.5 | Maxi-2.0 | Maxi-2.5 | Maxi-3.0 |
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4.0 | 3.15 Base | 3455 | 3483 | 3516 | 3595 | 3674 | 3753 | 3833 | 3912 | 3991 |
1.4o Top | 1425 | 1438 | 1455 | 1495 | 1535 | 1574 | 1614 | 1653 | 1693 |
NB: The 1.4m Top panel is from our Standard Trench Box Range |
Spindle Chart
Box Spindle Type | Trench Box / Hi-Clear Box |
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Internal Width | External Width |
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bC | b |
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m | m |
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Mini-0.0 | 0.65 – 0.75 | 0.85 – 0.95 |
Mini-0.5 | 1.15 – 1.25 | 1.35 – 1.45 |
Mini-1.0 | 1.65 – 1.75 | 1.85 – 1.95 |
Mini-1.5 | 2.15 – 2.25 | 2.35 – 2.45 |
Mini-2.0 | 2.65 – 2.75 | 2.85 – 2.95 |
Mini-2.5 | 3.15 – 3.25 | 3.35 – 3.45 |
Mini-3.0 | 3.65 – 3.75 | 3.85 – 3.95 |
|
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Midi-0.0 | 0.83 – 1.02 | 1.03 – 1.22 |
Midi-0.5 | 1.33 – 1.52 | 1.53 – 1.72 |
Midi-1.0 | 1.83 – 2.02 | 2.03 – 2.22 |
Midi-1.5 | 2.33 – 2.52 | 2.53 – 2.72 |
Midi-2.0 | 2.83 – 3.02 | 3.03 – 3.22 |
Midi-2.5 | 3.33 – 3.52 | 3.53 – 3.72 |
Midi-3.0 | 3.83 – 4.02 | 4.03 – 4.22 |
|
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Maxi-0.0 | 0.98 – 1.26 | 1.20 – 1.48 |
Maxi-0.5 | 1.48 – 1.76 | 1.70 – 1.98 |
Maxi-1.0 | 1.98 – 2.26 | 2.20 – 2.48 |
Maxi-1.5 | 2.48 – 2.76 | 2.70 – 2.98 |
Maxi-2.0 | 2.98 – 3.26 | 3.20 – 3.48 |
Maxi-2.5 | 3.48 – 3.76 | 3.70 – 3.98 |
Maxi-3.0 | 3.98 – 4.26 | 4.20 – 4.48 |
|
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For 4.50m long Trench boxes, add 40mm to the ‘External Width’ column. |
