How to deal with the inclination of the steel sheet pile in the direction of piling

When playing the pile in the soft soil, due to the resistance of the connection lock is greater than the resistance of the soil around the pile, forming an uneven force, so that the sheet pile tilted forward direction. This tilt to adjust as soon as possible, you can use the hoist cable to pull the pile back and then hammer, or can change the hammer direction. When the tilt is too large, by the above method can not be corrected, you can use a special wedge pile, to correct the purpose of correction.

Welded Pipes

The global market for Continuous Welded Pipes and Tubes is projected to reach 24 million tons by 2022, driven by the rise in investments in industrial projects and water infrastructure projects in developing countries. The growth in the market is also driven by the need to replace aging pipelines in developed economies of the U.S. and Europe; and new emerging applications in fire sprinkler systems, and agricultural sprinkling systems. Asia-Pacific represents the largest and the fastest growing market worldwide, led by factors such as rapid urbanization, growing focus on urban water security and the ensuing expansion of water supply networks; healthy pace of industrialization and the resulting investments in pipelines for industrial water and wastewater management and focus on irrigated agriculture in a bid to ensure food security and the ensuing popularity of pressure piped irrigation techniques.

(This article comes from Global Industry Analysts editor released)

Deformed Bar Anchors

Deformed Bar Anchors – are low carbon-steel devices designed to increase holding power in concrete and maximize material strength in applications where substantial load supporting (shear tension) forces are present on embedments.

Used in the following situations:

  • Precast columns
  • Tee and beam connections
  • Seismic shear walls
  • Securing steel plates to concrete structures

(This article comes from Haydon Bolts editor released)

Model 88 Duckbill Earth Anchor

Ideal for rocky or hard soils, as well as for use with power installation equipment. Holding capacity to 3,000 lbs. in normal soil. 1/4” x 42” Cable. Duckbill is 6.32” L x 2.36” Tall.

An upward pull on anchors rotates duckbill into a load-lock position approximately 15° from horizontal. Further tension causes anchor to plane sideways through undisturbed soil, increasing holding power. No rods, stakes, pipes, or stems above ground. Made of tinzalloy aluminum alloy, will not corrode or rust. Driving rod required to drive anchor vertically into undisturbed soil to required depth.

(This article comes from Forestry Suppliers editor released)

LZH develops laser for underwater cutting of steel

Speed, precision and safety improved by new process based on a disc laser for torch cutting.

Performing industrial or engineering tasks under water is especially personnel- and time-intensive. Laser Zentrum Hannover (LZH) is therefore working on developing a laser-based, automated process for cutting sheet piling under water, in conjunction with the Institute of Materials Science of the Leibniz Universität Hannover.

Sheet piling typically protects fortified shore areas, or it can also be deployed to dry out these areas if repairs are necessary. If the sheet piling needs to be dismantled, divers have to cut the walls into smaller pieces using a cutting torch. Normally, a diver can cut about 20 meters a day, which corresponds to a speed of about 0.07 meters per minute.

In the project LuWaPro, scientists at the LZH have now developed a process which uses a disc laser for torch cutting. The divers thus only carries out a supervisory role. The process can be used to separate the metal sheets, which are usually 10 mm thick for sheet piling, at speeds of up to 0.9 m/min.

20170522Laser cutting of sheet piling under water.

Robust process

Poor visibility, currents or uneven surfaces make working underwater more difficult and dangerous for the divers. The scientists of the Underwater Technology Group have achieved a position tolerance of about two millimeters in their process, enabling the system to react robustly to possible impacts during underwater operation.

The process whas been tested with two scenarios: on the one hand, standalone metal sheets were cut underwater, on the other hand, the sheets were backfilled with concrete. In the second scenario, a leaking of the molten material through the cutting kerf is achieved by tilting the laser head at an angle of 20 degrees.

LZH comments that a further major advantage of the new process in comparison to the conventional hand-guided process is the possibility of closely monitoring the process. Sensors can reliably determine whether a cut is completed or not. Otherwise the diver often cannot see this due to the poor visibility underwater.

The laser safety necessary for this process can be assured if the diver wears conventional safety goggles under the safety helmet. The project, entitled “Laser cutting under water for high productivity – LuWaPro” has been supported by Germany’s Federal Ministry for Economic Affairs and Energy.

(This article comes from optics.org editor released)

How Stingray earth anchors works

Stingray earth anchors, a patented labor and time saving device, work like a toggle bolt in soil. The anchors are driven into the ground with conventional equipment (with no excavation and no grout), providing a safe and environmentally sensitive installation.

After driving the anchor to the required depth, the drive steel is removed and an upward pull on the anchor rod rotates the Stingray earth anchors into a perpendicular “anchor lock” position in undisturbed soil. After the anchor is tipped it can be simultaneously load tested. The result: superb holding capacities. Stingray earth anchors systems offer breakthrough earth anchoring technology for applications where heavy capacities are required.

Many of our customers utilize Stingray earth anchors for tie-backs and excavations shoring with superb economic advantages. The bottom line is Stingray earth anchors is the ideal solution for a wide range of soils and applications requiring superior holding capacities.

This article comes from earthanchor edit released

Manta Ray Earth Anchor’s Features

  • A rugged driven plate anchor for all types of soils
  • Manta Ray Earth Anchor can be installed in extremely tough soils such as caliche, decomposed rock, glacial till, and permafrost
  • Large model available for swamp application
  • Portable installing equipment to access difficult to reach anchor locations
  • Uses the line truck (or portable unit) hydraulic system as power supply
  • Every anchor is proof tested

Installation Methods for Vinyl Sheet Piles

1) Driving

Driving is the most frequently used method for installing vinyl sheet piles.

Driving involves the mechanical pressing of the piling into the soil with vibration hammers, along previously installed templates.

Light equipment with limited impact force is used in order to protect the piling against damage.

Type of used equipment depends on the type of soil, driving depth and piling strength.

2) Jetting 

Jetting is a method used to install the sheet piling in cohesive or very compact soils.

Under some conditions, the force of vibration hammers is not enough to achieve the required depth.

The reason may be that there are obstacles in the soil or that the soil itself is too hard.

The jetting technology involves creating pressure under the sheet piling foot to loosen and remove the soil under it.

Air or water ejectors with high – or love pressure water pumps are used to loosen the soil.

3) Digging 

Digging is a method used during construction of a piling wall with limited depth, often in stony soils where the driving and jetting technology are not feasible.

The sheet piling is installed in an excavated ditch which is then filled with sand.

The sand bedding should be mechanically or chemically compacted.

(This article comes from Thyssenkrupp Infrastructureeditor released)

 

What is Vinyl Sheet Piling?

Vinyl sheet piling is made of hard polyvinyl chloride modified with processing facilitation agents, impact strength modifiers, thermal and UV stabilizers, as well as mineral fillers.

The piling is made in the extrusion process as monolithic profiles or in a co-extrusion process with the core made of recycled construction PVC coated with the layer of an original plastic.

As a standard, our vinyl sheet piling comes in the olive colour. Other colours are available upon request.

(This article comes from Thyssenkrupp Infrastructureeditor released)

What are the preparations for the steel sheet pile?

The position of the steel sheet pile should be such as to facilitate the construction of the foundation, that is, outside the edge of the foundation and leave the floor.

In particular, if the use of steel sheet pile for the base plate or pile foundation platform side of the mold, you must lined with fiberboard or oil felt and other isolation materials, so that steel sheet pile pull out.

The layout of the steel sheet pile should be as straight as possible and avoid irregular corners in order to make full use of the standard steel sheet pile and facilitate the provision of support.

For multi-layer support steel sheet pile, should first open the trench installation support and pre-tightening force (about 50% of the design value). And then excavated to reduce the deformation of steel sheet pile support.

For the steel sheet pile wall should be set in the sheet pile seams set up a reliable anti-seepage and sealing structure, if necessary, after the pile in the pit outside the steel sheet pile at the mouth of the grouting seepage.