Cost Effective Driven Piles Air Hammer Diesel Hammer Hydraulic Hammer.

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Presentation transcript:

Cost Effective Driven Piles Air Hammer Diesel Hammer Hydraulic Hammer

Air Hammer Air is very compressible. Infinitely variable stroke is not possible.

Air Hammer Operation

Hydraulic Hammers Hydraulic oil is not compressible. Directional changes can be instant. Infinitely variable stroke is standard.

Air cylinder – Hydraulic cylinder

Air versus Hydraulic- Volume Lots of Air and lower pressure. Not much hydraulic oil but higher pressures. 120 psi Up to 5000 psi. AIRHYD

Diesel Hammers

Good Points Light and powerful Longer strokes Warns pile before striking it Drives steel piles better in end bearing situations Higher peak force No hoses No external power source Bad Points Stroke adjustment limited Starting problems in soft soil Smoke is visible Spits unburned fuel and oil Looks noisy

Peak Force- Hydraulic versus Diesel Time in milliseconds O FORCEFORCE

Peak Force- Hydraulic versus Diesel O Time in milliseconds FORCEFORCE Hydraulic Impact takes Longer

Peak Force- Diesel Hydraulic 20 milliseconds 80 milliseconds

Quad Model 400

40 feet in diameter by 60 feet long. Caisson weight is one million pounds.

Four 1000 HP Power units

Four APE Model 400 Vibros mounted on a giant caisson beam

APE Four Kong System