What is the proper vinyl sheet pile driving method for different soil types?

“Pitch and drive” method is the most practical way of pile driving in loose soils especially when using short piles. Also called “set and drive”, this method installs piles one by one. However, with only one interlock in control, sheet piles have high tendencies of rotating from the axis and leaning forward or backward. Panel driving is recommended for the dense deposit of sands and compact cohesive soils such as heavy clay or in presence of obstructions. In this method, a number of piles are interlocked together before driving. The panel of piles is supported by guide frames and driven gradually in sequence, sometimes in a staggered manner. The method can achieve installations of longer piles in more difficult ground conditions with better results in sheet pile alignment and verticality. In cases of difficult ground conditions such as hard strata and the presence of obstructions, driving assistance is employed along with a proper selection of driving method and equipment. Jetting and drilling help by loosening or eliminating obstructions by creating pressure right under the tip of the sheet pile being driven. Long and slender PVC sheet piles require steel mandrels as supports when driven in such conditions. Mandrel, which shape is similar to sheet pile profiles, increases the rigidity of Plastic Sheet Pile and supports the weight of the driving equipment such as a vibro-hammer.

What is the proper machine to drive piles in different conditions?

Impact driving is suitable for all soil types but appears to create the highest degree of stress to sheet piles. It is more appropriate to cohesive soils and soft soils such as silts and peats, loose medium to coarse sand, and gravels free of rock inclusions. Drop hammers such as the hydraulic hammer are the common types of impact-driving machinery. Driving using vibratory hammers is ideal for non-cohesive or granular soils such as soft soils and round-grained sand or gravel. It has also shown satisfactory performance in sandy, silty, or softer clay soils. It is less effective in angular-grained materials and soils with a firm consistency. With the introduction of vibration, however, the sub-soil can be further compacted, increasing penetration resistance and ultimately-refusal. If this is the case, driving aids like jetting and drilling might be necessary.

What are the pvc sheet pile selection criteria for soil condition of different hardness?

General rule of the thumb: “the harder the soil, the stronger and stiffer sheet pile section should be used”. Driveability of a pile section is a consequence of its cross-sectional properties (thickness, depth, and width), designed shape, length, grade, and the applied load. Hardness of soil strata characterized by SPT or CPT values is used to predict soil resistance which is essential in the calculation of driving force to be applied. Knowing the range of force from the selected driving machine, corresponding sheet pile sections can be picked according to their yield strength and elastic modulus.

How should I choose a sheet pile section for soils with, say, SPT Value, N=30? Can I still consider using vinyl or shift to steel?

Every sheet pile material has a design purpose, strengths, and areas of improvement. The availability of different materials denotes the need for a special material for a specific application. Plastic or synthetic sheet piles for example are known for being light and corrosion-resistant; Steel sheet piles are recognized for their extraordinary strength and versatility; and so on.

ESC Group

Sep 16, 20233 min read

A Comprehensive Guide to Purchasing Steel Pipes

Steel pipes are essential components in various industries, from construction to manufacturing. Choosing the right steel pipes for your project is crucial for its success and longevity.

Buyers face numerous complexities in the process of procuring pipes. There is a lot of published information, specifications and likely gives confusion to purchasers.

These challenges include selecting from a variety of available products, understanding the most suitable options for the required application. On top of this, we consider acquiring pipes that not only adhere to industry standards but also align with the regulatory constraints set forth by governmental bodies and customer requirements.

In this guide, we'll walk you through the key considerations when buying steel pipes, by understanding all the information that should be included in a purchase order.

Determine Your Needs: Start by understanding the specific requirements of your project. Consider factors like pipe sizes, material grade, and the environment in which the pipes will be used.

Size and Dimensions: Accurate measurements and specifications are essential to ensure the pipes fit your project's needs perfectly. Basic dimensions such as diameter, thickness, weight and length needs to be determined.

Pipe Sizes: Please refer to our blog “A Deeper Understanding to Pipe Sizes and Pressure Ratings” for additional information.

Material Grade:

Material Selection: Selecting the appropriate steel grade is vital. Factors such as corrosion resistance, strength, and temperature tolerance should influence your choice. Each classification and type of steel pipe has suitable areas of application, dominant features, and inferiorities. Please read our blog "What to Look for When Choosing Steel Pipes?" to learn more.

End Connections: Decide on the type of end connections, such as threaded, welded, or flanged, based on your installation requirements.

Requirement for Protective Coating: Corrosion poses a significant and expensive danger as it leads to the oxidation of metal surfaces, potentially damaging entire structures. This problem can result in critical consequences, including the collapse of bridges and buildings, pipeline failures, chemical plant leaks, and other structures.

It's crucial to note that not all types of steel offer the same level of corrosion resistance. The good news is that there are various finishing methods available to enhance steel's ability to withstand corrosion. Some corrosion protection approaches include the use of sacrificial anodes, painting, galvanization and the use of tape wrap.

To learn more about steel corrosion please refer to our blog "How Steel Corrodes?"

Quality and Standards: Ensure the pipes meet industry standards and are of high quality. Look for certifications and conduct necessary tests.

Budget Consideration: Balancing quality and cost is critical. Determine a budget that allows for high-quality pipes without overstretching your finances.

Supplier Research: The high demand for steel products also paved the way for many business owners to venture into manufacturing and trading different steel products that will cater to various requirements from different industries.

Currently, there is great competition in the market in steel manufacturing and supply. Ask the necessary questions to a steel supplier before buying a steel product for your project.

1. Years of experience in the industry.

2. Production capability

3. Delivery times

4. Pricing

Choose a reputable supplier with a track record of providing quality steel pipes. Read reviews and seek recommendations.

Environmental Factors: If your project involves challenging environmental conditions, select pipes that can withstand them.

By following this guide, you'll be well-equipped to make informed decisions when buying steel pipes. Remember that the right choice of steel pipes is essential for the success and durability of your project.

When uncertainty arises, it is advisable to seek guidance from an engineer and reference the established industry standards that regulate your specific application.

ESC can offer a wide range of Pipe Piles at various steel grades, thicknesses, and sizes. With our expertise in logistics, we have delivered Pipe Piles at over 100mT a piece and 100m length directly to project sites halfway around the world.

Feel free to reach out to us to discuss your inquiries or address any concerns you may have. If you're ready to inquire into the details or request a quotation, don't hesitate to get in touch, and we'll be happy to provide you with the information you need.

Email us now escuae@escpileuae.com, visit our contact page to find the assistance near you.