Post pile driver

The solution to handling pile obstructions varies based on the depth of the obstruction. The obstruction may reveal contaminated soil. If you encounter shallow obstructions within three feet of working grade, you can likely just remove it without significant impact to the surrounding soil. Excavations are often not a viable solution where the obstructions are located beyond three feet or below the water table.

In this situation, pre-drilling of pile locations can be employed. Deep pile obstructions may require an engineer to provide a remedial design. Deep obstructions can reduce calculated bearing capacity.

In this case, additional piles may be needed. Concrete piles are subject to various kinds of cracking. The direction, location, and severity of the cracks provide clues to the cause. Common problems with concrete piles and solutions include:. Where easy pile driving causes partial horizontal cracks in a concrete pile, check the hammer-pile alignment.

Another possible cause is a combined tension and bending that is too high. Where easy pile driving causes complete horizontal cracks in a concrete pile, calculated tension stresses may be off. If the tension stresses are too high, add cushioning or reduce the length of the hammer stroke. If too low, it may be related to poor hammer performance.

Complete horizontal cracks during hard driving require you to calculate tension stresses along the length of the pile. If they are high, you may need a heavier ram. If too low, quakes are likely higher than expected. Using fiber optic sensors for pile monitoring allow you to measure stresses along the entire length of the pile during driving.

This provides greater accuracy as compared to standard monitoring. Note that cracks discovered early may be repaired with epoxy. Otherwise, they may end up in the pile heap. When there is spalling chipping or crumbling near the pile head, you will need to determine pile head stress for the blow count observed as compared to allowable stresses.

One cause for damage near the head of a concrete pile is insufficient pile cushioning. Adding pile cushioning is the solution to high stress. However, if your calculations indicate low stress, there are several potential causes.

These include hammer performance and alignment issues, as well as poor pile quality. There are several things that can cause a steel pile head to deform or the head of a timber pile to split or splinter. These include:. You can use a metal point or boot to protect the timber pile. Use them with banding near the top of the pile to prevent splitting. If you are still having an issue, calculate the stress on the pile head.

Reduce the hammer stroke for low blow counts; increase for high blow counts. However, you may need to choose a different hammer — even a different pile type. Sometimes the pile driving hammer is the cause of problems. In this case, ram friction may be the cause. If the observed blow count is less than calculated, soil resistance is likely lower than originally estimated. If they are similar, use lower combustion pressure to align the hammer stroke.

When using a wave analysis software program to predict pile behavior, you may run into data issues. If the specific hammer you are using is not listed when you are entering wave analysis data, use a hammer of the same type. It should have a similar energy rating and ram weight. You will need to modify its data to fit the application. In some cases, there is no hammer that matches the driving stress and resistance limits.

It may be that the calculated stresses and blow counts are too high. One option is to increase material strength — or make design changes. Perform restrike or static load testing to confirm capacity. Pile driving sounds simple — hammer columns into the ground.

But it is a complex process that requires extensive testing and accurate calculation. Selecting the right pile material and equipment for the soil and load capacity depends upon it. There are several problems that can arise in the field. Preparation and contingency planning are the key to keeping a pile driving project on track and on budget. Volume 37 Issue 6. Volume 37 Issue 5. Volume 37 Issue 4. Volume 37 Issue 3. Volume 37 Issue 2. Volume 37 Issue 1. Volume 36 Issue 6. Volume 36 Issue 5.

To our valued friends, family, and customers, We want to take the time and reassure you that we are doing everything we can to ensure the safety of our employees, suppliers, dealers and customers during the COVID pandemic. Marat Nogerov President, Buhler Industries. Toggle navigation. Model The Farm King 3-Point post driver works with your tractor or skid-steer for efficient effortless post driving.

Built to be fast, powerful, durable, and maneuverable, Farm King 3-Point post drivers are ideal for use on the jobsite or on the farm. Model Mast 12" mm wide track Hammer Weight lb kg empty, up to lb kg ballasted Impact at Full Stroke , lb 45, kg Max Hammer Height Standard lift " 2. All hydraulic slew, telescopic, mast rake and tilt angle. This machine is particularly versatile and suited to the needs of vine-growing companies that must perform maintenance on systems that are already in use, as well as create new structures.

The machine lets the damaged stake be replaced The lateral pole driver is used for the trellising of vineyards, orchards, etc. The Rambo L machine has been designed to work in any situation. The machine is mounted on the side of The Post Press P1 makes creating a new vineyard much easier.

It is suitable for use with wood or metal posts. The Cross Fence Post Driver comes with a hydraulic top link as standard on all models. Cross provide up to six different fence post driver options.

All models come Unit in package - 1. This heavy duty driver delivers a 14 pound drive weight for faster and easier Please refer to our Privacy Policy for details on how AgriExpo processes your personal data. Your most recent searches Delete. Frequent searches. Other sections. Post drivers 23 companies 42 products.

Engine types. Compare this product Remove from comparison tool.