Blow counts are calculated beforehand. If the blow count differs in the sector, there’s likely a problem. Allow me to share frequent challenges and alternatives associated with blow depend:
Driving method challenges could be connected with minimal hammer performance or cushion that is way too comfortable. The soil could have higher power, larger damping ration, or larger soil quakes than First screening expected.
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Concrete piles are issue to various styles of cracking. The route, location, and severity of the cracks give clues to your result in. Frequent problems with concrete piles and options consist of:
In a higher level, a pile click here driving system has 4 major areas: lead, hammer cushion, helmet, and pile cushion. Just about every element has a role in transferring energy on the pile which subsequently impacts hammer functionality. Read far more at our glossary.
Substitute piles are constructed inside a formerly click here drilled borehole, Therefore restoring the excavated floor.
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In which easy pile driving will cause full horizontal cracks in a very concrete pile, calculated stress stresses might be off. If the tension stresses are too high, increase cushioning or lessen the size on the hammer stroke. If far too very low, it may be associated with weak hammer effectiveness.
The bearing stratum is logged in the course of installation drilling to guarantee that bearing functionality is sufficient.
The pile driver lead is actually a supporting framework that guides the pile and hammer. They can be classified by how they connect towards the pile driver – hanging, mounted, or swinging. Qualified prospects continue to keep the ประโยชน์ของเสาเข็มไมโครไพล์ piling and hammer aligned.
You must modify its information to fit the appliance. Sometimes, there is no hammer that matches the driving tension and resistance limitations. It might be which the calculated stresses and blow counts are as well substantial. A person option is to improve substance power – or make design and style adjustments. Carry out restrike or static load testing to substantiate ability.