7/25/2019 Banggai Amonia Plant _ing

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PT. Protech Bumindotama Engineering

Banggai Ammonia Plant Project at Banggai, Luwuk Central Sulawesi. #8

IV.3. BEARING CAPACITY

Using the PDA, Pile Axial Bearing Capacity is predicted by analyzing the vibration

records of blow, i.e.: when friction was still at its maximum level of undisturbed.

RMX, maximum Case-Goble resistance (using JC) at any time during blow, is used.

From Pile Driving Analyzer it was found that Ultimate Pile Bearing Capacity for the piles are as

follows.

Tabel 4 :

Ultimate Pile Bearing CapacityPDA and CAPWAP Result

Pile No.

Ultimate Pile Bearing Capacity (Tones)Settlement

Dx(mm)

PDA(RMX)

CAPWAP

TotalSkin

FrictionEnd

Bearing

30A1203FB 493 496.3 366.7 129.7 18.9

30A1215FB 449 449.1 208.6 240.5 15.0

30A1221FB 602 603.2 214.6 388.6 26.3

30A1229FB 561 558.2 433.6 124.6 25.7

30A1153FB 445 444.9 346.2 98.6 18.2

30A1114FA 504 503 319.6 183.3 20.7

TEST PILE A 399 403.0 171.3 231.6 30.1

30A1192FA 328 333.1 269.8 63.3 19.9

30A1221FA 373 372.1 253.1 119.0 38.2

Piles have settlement > 25 mm when maximum capacity, we recommend to use rather

conservative safety factor.