1 \ Trenching & Shoring
TRENCHING & SHORING
2 \ Trenching & Shoring
TRENCHING & SHORING Since its establishment in 2009, Trenching & Shoring has experienced considerable growth, now spanning strategically placed depots nationwide and achieving full UK coverage for our customers. Our Trenching and Shoring product range includes the Modular Bracing Ultra 300 System, City Boxes, Light Trench Boxes, Standard Trench Boxes, Mini and Maxi Drag Boxes, Backhoe Boxes, Trench Sheets and Piles, Waler Systems, Edge Protection, and other related products and accessories. GAP’s value-added Trenching & Shoring solutions tick all the boxes when it comes to reliability, quality and price. All our groundworks equipment is supplied with user guides and technical information, plus our customers enjoy the peace of mind that our highly trained specialists are just a phone call away. GAP is constantly reinvesting in our product fleet, people and processes to ensure our customers get the hire experience and quality they deserve on-site. With generous stock levels and our own transport, we can offer a quick response time for urgent requirements. If you can’t come to us, our bespoke vehicles can come to you with Hiab delivery and collection, subject to availability, booked prior to placing orders. Ultimately giving you more time to get the job done.
Trenching & Shoring / 3
DESIGN SERVICE GAP has established itself as one of the UK’s most trusted and innovative hire equipment providers by having a clear understanding of how to help our customers achieve their goals. To accompany our extensive product range, we offer a temporary works design service which is available for all Trenching & Shoring products. We work closely with our customers to supply the relevant equipment required by site. This often requires a site visit by our knowledgeable Technical Sales Representatives or regional hire desk and operational staff to discuss various options and obtain the best solution.
Our design document provides a full technical design solution to cover your temporary works requirements
• CDM 2015 Declaration • Design brief summary • Design solution summary • Design specific notes • Supplementary condition • Calculations and drawing
4 \ Box Systems (Trenching & Shoring)
BOX SYSTEMS
Box Systems (Trenching & Shoring) / 5
Aluminium Trench Shield Aluminium Trench Shields are ideal for sewage, stormwater, and general excavation work. With a two-sided mechanical support system made from lightweight aluminium, they are durable and user-friendly. These shields can be stacked, inverted, and are excellent for maintenance work.
Aluminium Manhole Boxes Aluminium Manhole Boxes are perfect for rapid construction of manhole chambers using a small excavator. They support working loads up to 32kN/m 2 and feature spreader bars of 65 x 6 SHS. These boxes are stackable, come with available legs and are compliant with Global Standards.
LITE Guard City Box The City Box is a compact trench shield perfect for excavation in tight and limited access sites and roads due to the narrow panels. It serves as a two- sided mechanical excavation support system, ideal support of trenches up to 3.9m deep.
Aluminium Trench Shield
Clearance Between Struts 950 / 2150mm
Max Lateral Earth Pressure
Panel Height
Panel Length
Panel Weight
Min Trench Width Max Trench Width Max Depth
1200mm
2400mm
55kg
708mm
1908mm
2400mm
20kN/m 2
Aluminium Manhole Boxes
Clearance Between Struts
Max Lateral Earth Pressure
Panel Height
Panel Length
Panel Weight
Trench Width
Max Depth
2000mm
2400mm
212kg
2290mm
1850mm
4000mm
32kN/m 2
LITE Guard City Box
Clearance Between Struts
Max Lateral Earth Pressure
Panel Height
Panel Length
Panel Weight
Min Trench Width Max Trench Width Max Depth
1965mm
3012mm
192.4kg
2622mm
800mm
1900mm
3900mm
32kN/m 2
6 \ Box Systems (Trenching & Shoring) LITE GUARD LADDER MATE
Our LITE guard Ladder Mate Platform is a safe means of access into the city box from the ground. This system features high quality lightweight aluminium (38.3kg) extrusions and easy to adjust clamping screws.
• Provides safe access for workers when entering or leaving a trench shield, whether it is protruding from the ground or benched. Ladder Mate ensures a non-slip surface for workers, especially in wet or muddy conditions. • Ladder Mate ensures a non-slip surface for workers, especially in wet or muddy conditions. • The ladder mate platform can be used on all our aluminium shoring panels with minimum thickness of 50mm and up to 200mm.
Aluminium construction with capability to carry a load of 136kg
TWEP031
Box Systems (Trenching & Shoring) / 7
Backhoe Trench Boxes Lightweight Backhoe Trench Boxes are designed for use with small excavators that have a limited lifting capacity.
Standard Trench Boxes GAP’s standard trench boxes are suitable for a large range of trench depths and widths. Trench box tops are available to add extra height in a deeper trench. Pinned struts allow for easy adjustment.
Light Trench Boxes Light trench boxes provide ground support for excavations and protect workers. The lightweight shoring equipment is ideal for the installation of sewers and utility work.
Backhoe Trench Box
Clearance Between Struts
Max. Lateral earth Pressure
Trench Width (Internal)
Base Panel Length
Base Panel Height
Extension Panel Height
Clearance Under Strut
Thickness of panel
Max. Trench Depth
Weight of Base Box
Weight of Extension Box
603-2403mm 2660mm 2840mm 2012mm 1024mm 1200mm 60mm 20kN/M 2
2900mm 805kg
415kg
Light Trench Box
Clearance Between Struts
Max. Lateral earth Pressure
Trench Width (Internal)
Base Panel Length
Base Panel Height
Extension Panel Height
Clearance Under Strut
Thickness of panel
Max. Trench Depth
Weight of Base Panel
Weight of Extension Panel
620-3190mm 2696mm 3020mm 2015mm 1025mm 1100mm 80mm 28kN/M 2
4000mm 567kg
320kg
Standard Trench Box Trench Width (Internal) Clearance Between Struts
Max. Lateral earth Pressure
Base Panel Length
Base Panel Height
Extension Panel Height
Clearance Under Strut
Thickness of panel
Max. Trench Depth
Weight of Base Panel
Weight of Extension Box
620-3190mm 3220mm 3520mm 2520mm 1525mm 1500mm 100mm 40kN/M 2
5500mm 1040kg
685kg
8 \ Box Systems (Trenching & Shoring)
Our drag boxes provide a safe and quick means of pipe laying. Excavators are used to drag the box forward by pulling on the front strut. Pinned struts allow for easy adjustment. DRAG BOXES
Mini Drag Box
Clearance Between Struts
Max. Lateral earth Pressure
Trench Width (Internal)
Base Panel Length
Base Panel Height
Extension Panel Height
Clearance Under Strut
Thickness of panel
Max. Trench Depth
Weight of Base Panel
Weight of Extension Panel
560-3000mm 2600mm 3034mm 2005mm 1030mm 1200mm 60mm 25kN/M 2
3900mm 604kg
365kg
Maxi Drag Box
Clearance Between Struts
Max. Lateral earth Pressure
Trench Width (Internal)
Base Panel Length
Base Panel Height
Extension Panel Height
Clearance Under Strut
Thickness of panel
Max. Trench Depth
Weight of Base Panel
Weight of Extension Panel
574-3014mm 4654mm 5040mm 2000mm 1000mm 1200mm 80mm 20kN/M 2
2900mm 1076kg
650kg
5.1m Drag Box
Max. Lateral earth Pressure
Trench Width (Internal) 600 - 4100mm
Clearance Between Struts
Extension Panel Height
Clearance Under Strut at the Front
Clearance Under Strut at the Back
Max. Trench Depth
Weight of Extension Panel
Base Panel Length
Base Panel Height
Thickness of panel
Weight of Base Panel
4245mm 5100mm 2424mm 1824mm 1380mm 380mm 100mm 30kN/M 2
4200mm 1335kg
1045kg
7.1m Drag Box
Max. Lateral earth Pressure
Trench Width (Internal) 600 - 4100mm
Clearance Between Struts
Extension Panel Height
Clearance Under Strut at the Back
Max. Trench Depth
Weight of Extension Panel
Clearance Under Strut at the Front
Base Panel Length
Base Panel Height
Thickness of panel
Weight of Base Panel
6245mm 7100mm 2424mm 1824mm 1380mm 380mm 100mm 30kN/M 2
4200mm 2270kg
1800kg
Box Systems (Trenching & Shoring) / 9
Manhole Boxes GAP’s manhole boxes are designed for use in conjunction with our manhole shutters, allowing fast manhole construction without the need for a worker to enter the unsupported excavation.
Max. Lateral earth Pressure
Clearance Between Struts
Weight of Extension Panel
Manhole Box Type
Max. Trench Depth
Weight of Base Panel
Int. Trench Width
Standard 2.0m 2000mm 1532mm / 4520mm 40kN/M 2
3000mm 555kg
220kg
Backhoe 2.5m 2298mm 1485mm / 3285mm 20kN/M 2
2900mm 960kg
580kg
Standard 2.5m 2212mm 1550mm / 4520mm 55kN/M 2
5500mm 1156kg
830kg
Standard 3.0m 2712mm 1550mm / 4520mm 45kN/M 2
5500mm 1278kg
910kg
Standard 3.5m 3212mm 1550mm / 4520mm 40kN/M 2
5500mm 1395kg
985kg
Standard 4m 3749mm 3030mm / 4510mm 35kN/M 2
5500mm 1812kg
1325kg
Standard 4.7m 4449mm 3030mm / 4510mm 35kN/M 2
5500mm 1982kg
1440kg
Edge Protection for Boxes A lightweight barrier system used to provide enhanced safety on site, helping to prevent falls into excavations. Often used with GAP’s range of trench boxes, drag boxes and manhole boxes.
• Kickboards to prevent debris falling into excavations • Not intended to restrain or support excessive loads • Weight of Edge Protection Barriers: 9.2kg to 40.5kg • Size lengths: 2000mm, 2500mm, 3000mm & 3500mm
Edge Protection Type
Panel Height
Standard Box Backhoe Box
1000mm 1000mm 1000mm 1000mm 1000mm
Standard Manhole Box (2.5m) Backhoe Manhole Box (2.5m)
Drag Box (5.0m)
10 \ Box Systems (Trenching & Shoring)
GAP Sheetguard Edge Protection The GAP Sheetguard supplies edge protection to the excavation. Using the 1200mm or 2600mm mesh panels, they can provide a complete enclosure. The Sheetguard is ideal for safety purposes with its highly visible paint coating. Dimensions (L x H) Weight 1245mm | 1121mm 10.6kg 2609mm | 1121mm 22.9kg Trench Box/Trench Sheet Ladder Access Ladder access can be used in conjunction with the edge protection boxes to provide safe and secure ladder access into any excavation. • Ladder can be secured in either left-hand or right-hand orientation
Dimensions (L x H x W) 1100mm | 1300mm | 850mm
Weight
110kg
Trench Box End Closure Panels Trench Box End Panels play a part in ground shoring systems by supplying a safe way to close off open excavations. Panel Specification Width (m) Height (m) Thickness (mm) Weight (kg) Base Panel 3.5 2.0 60 775 Top Panel 3.5 1.0 60 440 Base Panel 3.0 2.0 60 525 Top Panel 3.0 1.0 60 300 Base Panel 2.5 2.0 60 445 Top Panel 2.5 1.0 60 265 Base Panel 1.5 2.0 60 300 Top Panel 1.5 1.0 60 175
In addition to all types of trenching products, GAP’s Non-Mechanical division offers customers fencing and barriers, bogmats, magnetic rail barriers, road plates and more. NON-MECHANICAL DIVISION
Hydraulic Systems (Trenching & Shoring) / 11
HYDRAULIC SYSTEMS
12 \ Hydraulic Systems (Trenching & Shoring)
Aluminium Waler System Used with trench sheets to support trench runs, allowing a clear working area. Compact and easy to install, the shoring units are commonly used for working around utility installations.
Double Acting Manhole Brace Our Double Acting Manhole Brace range is popular with the utilities, construction and infrastructure sectors. It is used with trench sheets to support four-sided excavations i.e. tank installs/bridge footings/manholes. Easy to assemble with pinned connections, they are available in lengths from 2-7 squared metres.
External Minimum
External Maximum
Waler Cylinders Type
Weight
Waler Cylinder Type A 530mm Waler Cylinder Type B 780mm
830mm 1310mm
13kg 16kg 23kg
External Minimum 2000mm 3000mm 4000mm 5000mm 6000mm
Manhole Brace Type
External Maximum Weight
Waler Cylinder Type C 1260mm 1800mm
Manhole Brace A Manhole Brace B Manhole Brace C Manhole Brace D Manhole Brace E
3000mm 4000mm 5000mm 6000mm 7000mm
219kg 271kg 324kg 375kg 627kg
External Minimum
External Maximum
Waler Extension Type
Weight
Waler Extension Type B1
1180mm
1710mm
25kg 28kg 38kg
Waler Extension Type B2 1500mm 2030mm
Waler Extension Type C1
2000mm 2500mm
Waler End Bearer
Range
Weight
Waler End Bearer - Type B Waler End Bearer - Type C
780mm - 1310mm 1260mm to 2010mm
20.0kg 30.5kg
Waler Rail
Rail Length
Height
Width
Material
Weight
Strut Centres
2.0m 3.0m 4.0m
180mm 180mm 180mm
120mm 120mm 120mm
Aluminium Aluminium Aluminium
21kg 31kg 41kg
1420mm 2520mm 3500mm
Trench Sheets (Trenching & Shoring) / 13
TRENCH SHEETS & ANCILLARIES
14 \ Trench Sheets (Trenching & Shoring)
Trench Sheets Standard Trench Sheets, available in a range of lengths, are primarily used for ground support and trench work. Groundworkers and utility companies use the lightweight steel trench sheets to provide a safe working environment in various excavations.
Dimensions (L x W)
Trench Sheet 330mm x 2.5m
Trench Sheet 330mm x 3.5m
Description
Trench Sheet 330mm x 2m
Trench Sheet 330mm x 3m
Trench Sheet 330mm x 4m
Standard Trench Pile Working Bending Moment (kN/m)
Weight per Straight Metre (cm/m2)
Section Modulas (cm/m3)
Moment of Inertia (cm/m4)
Weight per Metre (kg/m)
8.0
68.7
124.0
11.3
32.3
KD4/KD6 Trench Sheets KD4/KD6 Trench Sheets are commonly used in construction and civil engineering projects. KD4 Trench Sheets are more light-duty, primarily used for temporary works. These sheets are suited for shallow excavation where soil conditions are favourable. These are only available in selected depots. KD6 Trench Sheets are heavy-duty sheet piles, designed for deeper trenches and more challenging soil conditions.
Dimensions
Trench Sheet 6m
Trench Sheet 5m
Trench Sheet 4m
Working Bending Moment (kN/m)
Section Modulas (cm/m 3 )
Moment of Inertia (cm/m 4 )
Working Stress (N/mm 2 )
Weight per Metre (kg/m)
Weight per Straight Metre (cm/m 2 )
Product
KD6 KD4
34.0
184.0
717.5
183.0 275.0
37.5 22.2
62.5 55.6
18.1
98.8
250.0
90
150
90
600 621,4
Trench Sheets (Trenching & Shoring) / 15
EZE SHORING
Up to depths of 2.5m
ECO
Five components
Non-conductive
COMPOSITE EZE STRUTS EZE Strut Type Closed Open Size 1 511mm 711mm Size 2 706mm 1107mm Size 3 1041mm 1741mm Size 4 1750mm 2438mm
STEEL EZE STRUTS EZE Strut Type Closed Open Size 1 511mm 711mm Size 2 706mm 1107mm Size 3 1041mm 1741mm
EZE SHORING DEPTHS 1380mm 1760mm 2140mm 2520mm
EZE SHORING KIT
LENGTH
Hub Board
Infill Board
Waler
Slider
End Waler 1.5m End Bracket
1500 2000 2500 3000
4 6 6 6
8 8
4 4 4 4
8 8 8 8
4 4 4 4
8 8 8 8
10 12
16 \ Trench Sheets (Trenching & Shoring)
Steel Sheet Piling Interlocking steel sheet piles serve as a robust solution for ground support in a variety of construction applications, offering versatility and reliability for both permanent and temporary works, that may include cofferdams and retaining wall structures. • High strength • Various shapes and sizes offered to suit your requirements • Requires minimal maintenance
Sheet Pile Type
Back Thickness
Web Thickness
Width
Height
Mass
Moment of Inertia Section Modulus
L602 L603
600mm 600mm
310mm 320mm
8.4mm 9.6mm 9.1mm 10mm
7.6mm 53.4 Kg/Lin mtr 8.2mm 64.2 Kg/Lin mtr
89 Kg/m2 of Wall 107 Kg/m2 of Wall
13046 cm4/m
842 cm3/m
19199 cm4/m 1200 cm3/m 27020 cm4/m 1279 cm3/m 20930 cm4/m 1300 cm3/m 31548 cm4/m 1618 cm3/m 38243 cm4/m 1821 cm3/m 42433 cm4/m 2021 cm3/m 17402 cm4/m 2205 cm3/m 50880 cm4/m 1356 cm3/m 53785 cm4/m 2502 cm3/m 56116 cm4/m 2602 cm3/m 60112 cm4/m 2774 cm3/m 73300 cm4/m 3211 cm3/m
L603N
600mm 422.6mm
7.3mm 59.7 Kg/Lin mtr 99.6 Kg/m2 of Wall 10mm 72.1 Kg/Lin mtr 120.2 Kg/m2 of Wall
L603 10/10
600mm 600mm 600mm 600mm 600mm 600mm 600mm 600mm
322mm 390mm 420mm 420mm 430mm 431mm 430mm 431mm
L604
10mm
9mm 73.1 Kg/Lin mtr
121.8 Kg/m2 of Wall
L605A
10.7mm 12.3mm 13.4mm 14.4mm 15.8mm 16.5mm
9mm 76.5 Kg/Lin mtr 127.5 Kg/m2 of Wall 9.2mm 82.1 Kg/Lin mtr 136.8 Kg/m2 of Wall 9mm 85.4 Kg/Lin mtr 142.3 Kg/m2 of Wall 9.4mm 89.8 Kg/Lin mtr 149.7 Kg/m2 of Wall 9.3mm 93.9 Kg/Lin mtr 156.5 Kg/m2 of Wall
L605
L606A
L623 L606 L626 L628 L607
9.5mm 96.6 Kg/Lin mtr
161 Kg/m2 of Wall
600mm 433.4mm 17.5mm
10.3mm 102.3 Kg/Lin mtr 170.5 Kg/m2 of Wall 10.6mm 112.4 Kg/Lin mtr 187.3 Kg/m2 of Wall
600mm 456.5mm
19mm
A Guide to Safe and Effective Excavations Blog
Trench Sheets (Trenching & Shoring) / 17
Modular Bracing The Ultra 300 Modular bracing system comprises of five different extension lengths and a adjustable hydraulic ram unit which simply pins together at the joints to improve the installation process compared to other pins/bolt systems, eliminating the need of spanners or air tools. This modular brace is capable of clear a 15.5m span in both directions, with larger excavation supported with the use of of Ultra 300 cross strut arrangement and corner bracing.
18 \ Trench Sheets (Trenching & Shoring)
Code
Description
TWUB0001 TWUB0002 TWUB0003 TWUB0004 TWUB0005 TWUB0006 TWUB0007 TWUB0008 TWUB0009 TWUB0010 TWUB0011 TWUB0012 TWUB0013 TWUB0016 TWUB0018 TWUB0019 TWUB0020
ULTRA 300 Extension 550mm ULTRA 300 Extension 1000mm ULTRA 300 Extension 1500mm ULTRA 300 Extension 2500mm ULTRA 300 Extension 6000mm ULTRA 300 Hydraulic Unit Assembly
ULTRA 300 Pin
ULTRA 300 Cross Brace Extension 500mm ULTRA 300 Cross Brace Extension 1000mm ULTRA 300 Cross Brace Extension 1500mm ULTRA 300 Cross Brace Extension 2500mm ULTRA 300 Cross Brace Extension 6000mm ULTRA 300 Cross Brace Hydraulic Unit Assembly
ULTRA 300 Hook End Plate Assembly
ULTRA 300 Diesel Pump
ULTRA 300 9Corner Unit (Knee Brace)
Heavy Duty Hanging Chains
Trench Sheets (Trenching & Shoring) / 19
Hydraulic Pump for Modular Bracing System The pump allows for the safe and efficient installation of the hydraulic ram to be extended and retracted with the ease on site. • Capacity of Shoring Fluid Tank - 55 litres • Capacity of Fuel Tank - 3.3 litres Code Description TWUB0018 ULTRA 300 Diesel Pump
Pitching Shackles For pitching of trench sheets and piles using a spring-loaded pin mechanism.
Universal Driving Caps For driving standard lap trench sheets.
Trench Sheet Extractors For the safe and efficient extraction of trench sheets and sheet piling.
Scan to find your local Trenching & Shoring depot!
20 \ Trench Sheets (Trenching & Shoring)
Trench Struts Versatile Trench Struts are designed to be used horizontally to support trench walls, improving user safety and protecting other equipment in small, shallow excavations. • Clawed ends to ensure maximum grip
Trench Strut Types Trench Struts Size 0 Trench Struts Size 1 Trench Struts Size 2 Trench Struts Size 3
Closed Height
Open Height
300mm 450mm 680mm 1040mm
450mm 710mm 1140mm 1750mm
Road Forms Square-edged rigid Road Forms are used in the construction of ground slabs, roadways, foundations and drives. Available with a true square or flexible edge, ensuring a smooth radius bend. Typically supplied with 1‘ stakes/pins per metre (3 pins per road form). Pins are an add-on hire under code ‘STAK’. • High quality, reinforced concrete
Code
Description
RS560 RS561 RS562 RS573 RS574 RS565 RS566 RS042
Road Form - Straight 100mm Road Form - Straight 150mm Road Form - Straight 200mm Road Form - Rigid 250mm Road Form - Rigid 300mm Road Form - Flexi 150mm Road Form - Flexi 200mm Road Form - Flexi 300mm
Trench Sheets (Trenching & Shoring) / 21
Manhole Shutters Pre-formed steel shutters for forming concrete surrounds to manholes. • Each manhole shutter is made up of a combination of the modular panel components listed in the table below (A, B & C) • Two panel heights of 900mm and 1800mm • Three panel sizes combine for manhole ring diameters from 675mm to 2700mm • Rapid assembly using simple pin-and-wedge systems
Thickness of Concrete Surround (mm)
Manhole Ring Wall Thickness (mm)
External Dia. of concrete (mm)
Modular Panel Components
Vol. of concrete required (m 3 )
Normal Int. Dia. of Manhole (mm)
A
B
C
900
1800
675 900 1050 1200
2 2 3 3 3 3 4 4 4 5 5 6 6 6
1
- - 1 1 - 1
1171
183 159 160 169
0.51 0.54 0.63 0.75 0.68 0.90 0.79 1.02 0.96 1.03 1.33 1.33 1.31 1.69
1.02 1.09 1.25 1.50 1.36 1.80 1.58 2.05 1.93 2.05 2.66 2.66 2.62 3.38
65
2
1368 1541 1738 1855 1935 2028 2107 2342 2632 2712 3002 3316 3396
75
-
85
1
100
2 2
141 181
1350
112
- -
1 2
150 189 156 146 186 166 146 186
1500
115
1800
2
- - 1 1 - 1
115
1 1 -
2100
120
2400
135
2 2
2700
162
Panel height
Panel Reference
Panel Width (mm)
Panel Weight (kg)
1800 1800 1800
1530 620 250
66 36 27
A
B C
22 \ Trench Sheets (Trenching & Shoring)
COMPLEMENTARY PRODUCTS
GAP has a wide range of products available for hire which will help put your trench boxes and sheet piling in place.
Chain Slings
Manhole Lifter
Ladders
Lifting Pins
Manhole Chain Clamps
Counter Balance Davit System
Trench Sheets (Trenching & Shoring) / 23
trenchingandshoring@gap-group.co.uk 03330 094 153
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