Trench Sheet Piles


Trench Sheets: Comprehensive Overview


Trench sheets are essential components in civil engineering and construction, particularly for supporting vertical faces of small to medium excavations. They are designed to provide temporary or permanent earth support, ensuring safety and structural integrity during excavation projects. This paper delves into various aspects of trench sheets including their design, materials, installation techniques, applications, and benefits.

Design and Specifications

Trench sheets are typically designed to be lightweight yet strong enough to support vertical soil faces. They come in various profiles and lengths to suit different excavation needs. The design considerations for trench sheets include:

Profiles and Lengths

Trench sheets are available in multiple profiles, including:

  • Flat Sheets: Simple and easy to handle, suitable for light-duty applications.
  • Corrugated Sheets: Offer greater strength and rigidity, suitable for more demanding applications.

Steel Grades

Steel trench sheets are manufactured from various steel grades to meet different strength and durability requirements. Common steel grades include:

  • S235: Standard structural steel with good weldability and moderate strength.
  • S275: Offers higher strength than S235 and is also easy to weld.
  • S355: High-strength steel used for demanding applications where higher load-bearing capacity is required.

Trench Sheeting Catalog

Section Dimensions Mass Per meter of wall
Width Height Thickness Single
Wall Modulus of
Moment of
w h t W I
mm mm mm Kg/m kg/m2 cm3 cm4
GPT600-6 600 78 6 37.5 62 184 722
GPT600-7 600 79 7 44.5 74.1 232 835
GPT600-8 600 80 8 50 83 237 955
GPT600-9 600 81 9 55.53 92.55 263 1072

Section Dimensions Mass Moment of inertia Modulus of Section
Width Height Thickness Per pile Wall
w h t
mm mm mm kg/m kg/m2 cm4/m cm3/m
GPT 330-3 330 34 3 9.72 29.45 68 40
GPT 330-3.5 330 34.5 3.5 11.34 34.36 79 46
GPT 330-4 330 35 4 12.96 39.29 91 52
GPT 330-4.5 330 35.5 4.5 14.53 44.04 103 57
GPT 330-5 330 36 5 16.09 48.76 114 63
GPT 400-4 400 37 4 15.62 39.05 100 49
GPT 400-5 400 49 5 18.52 46.3 208 84
GPT 400-5.5 400 49.5 5.5 20.37 50.92 229 91
GPT 400-6 400 50 6 22.23 55.57 250 99
GPT 500-5 500 49 5 22.45 44.9 215 86
GPT 500-6 500 50 6 26.94 53.88 258 101
GPT 742-5 742 91 5 33.79 45.54 745 163
GPT 742-6 742 92 6 40.9 54.66 893 194
GPT 742-6.5 742 92.5 6.5 43.72 58.9 967 209
GPT 742-7 742 93 7 47.03 63.4 1042 224
GPT 742-7.5 742 93.5 7.5 50.3 67.8 1116 239
GPT 742-8 742 94 8 53.56 72.18 1197 254
GPT 742-9 742 95 9 60.26 81.21 1346 283
GPT 880-4 880 152 4 41.2 46.8 1897 261
GPT 880-6 880 154 6 61.9 70.3 2858 382
GPT 880-8 880 156 8 84.6 96.1 3890 510

Note: This table is only part of our sizes. We have over 1000 different sizes. We can adjust our machine to produce in any width,Height and thickness. Please contact us if your size is not in above table.


Overlapping and Interlocking

Trench sheets can be either overlapping or interlocking:

  • Overlapping Trench Sheets: These do not have interlocks and are placed adjacent to each other with a slight overlap. This method is simpler and quicker but may require additional sealing to prevent soil and water ingress.
  • Interlocking Trench Sheets: These have interlocking edges that connect to form a continuous barrier, providing better soil and water retention.

Installation Techniques

The installation of trench sheets involves several steps and specialized equipment to ensure proper placement and safety:


  • Excavators with Quick Release Shackle: Used for handling and positioning trench sheets through slinging holes at the ends of the sheets.
  • Driving Cap: Protects the trench sheets from damage during driving by distributing the impact force evenly.
  • Extraction Clamps: Used to safely remove trench sheets without causing deformation.

Installation Process

  1. Site Preparation: Clear the excavation site and mark the trench lines.
  2. Sheet Handling: Use excavators with quick release shackles to position the trench sheets.
  3. Driving Sheets: Drive the trench sheets into the ground using a driving cap. Ensure alignment and proper overlap or interlock.
  4. Sealing Joints: If using overlapping sheets, apply sealant to prevent soil and water ingress.
  5. Bracing and Support: Install any necessary bracing to maintain trench stability.
  6. Extraction: After excavation work is completed, use extraction clamps to safely remove the trench sheets for reuse.


Trench sheets are versatile and find applications in various construction and civil engineering projects:

Pipeline Installation

Trench sheets are commonly used to support excavations for pipeline installations. Their lightweight design and ease of reuse make them ideal for this application.

Earth Retention

In construction projects, trench sheets provide temporary support for vertical soil faces, preventing collapse and ensuring worker safety.

Waterway Banks

Due to their strength, speed of installation, and flexibility, trench sheets are often used to support waterway banks, preventing erosion and maintaining structural integrity.

Urban Excavations

In urban environments, trench sheets are used to support excavations for utilities, foundations, and other infrastructure projects, minimizing disruption and ensuring safety.


Trench sheets offer several advantages that make them a preferred choice in many construction projects:

Strength and Durability

Manufactured from high-quality steel, trench sheets provide excellent strength and durability, capable of withstanding significant loads and harsh environmental conditions.

Speed of Installation

The lightweight design and simple handling procedures allow for quick and efficient installation, reducing project timelines and costs.


Trench sheets can be easily adapted to various profiles and lengths, making them suitable for a wide range of applications. Their ability to be reused multiple times further enhances their flexibility and cost-effectiveness.


Trench sheets can be extracted and reused multiple times without significant deformation, making them a sustainable and economical choice for construction projects.


By providing reliable earth support, trench sheets enhance safety on construction sites, protecting workers and ensuring structural stability during excavation activities.

Regional Popularity

Trench sheets are especially popular in regions with softer soils, such as the Middle East and Australia. In these areas, the soil conditions allow for easier driving and extraction of trench sheets, making them an ideal solution for various excavation projects.

Design and Calculation Services

To ensure optimal performance and cost-effectiveness, comprehensive design and calculation services are available for trench sheet projects. These services include:

  • Trench Sheeting Design: Customized design solutions tailored to specific project requirements.
  • Load Calculations: Detailed calculations to ensure the trench sheets can support the expected loads.
  • Cost Estimations: Accurate cost estimations to help clients budget their