Tests for Pile
High Strain Dynamic Testing of Pile
Estimation of pile capacity by using driving formula was
introduced in the early 1940s by prominent engineer Karl
Terzaghi. About a decade later EA Smith of Raymond Pile
Driving Company developed a numerical method to estimate
pile capacity using wave propagation. Dynamic formula have
largely been replaced by more accurate wave equation analysis
and high strain dynamic testing, although these formulas are
still occasionally used in spite of their inaccuracies and the fact
that they cannot predict stresses during driving.
Now a days, the PILE DRIVING ANALYZER system (PDA) is
the most widely employed system for Dynamic Load Testing
and pile driving monitoring worldwide to assess driving stress,
capacity of piles, PDA also evaluates resistance profile, skin and
toe resistance, Shaft integrity and investigates driving stresses
and hammer performance during pile installation.
IES procured two PDA hardware set (PAX-8 &
PAX-4) and software and have been practicing
since long time. Few of IES engineers also
took overseas training to obtain proficiency
certificate, please visit our
website to see proficiency
level.
Crosshole Sonic Logging
Sonic Borehole Measurement (SBM) method applies to measure borehole/ trench dimensions
and perpendicularity
of drilled shaft for bored pile and diaphragm wall. Test utilize the principle of
ultrasonic wave transmission from
sensor to the wall of drilled hole and is reflected to the sensore through the bentonite
slurry.
The machine consists
of two unit, one is recorder and another is winch. Recorder unit controls the operation
and records the result. On
the other hand, winch unit lowers the probe (sensor) down the hole for tha ultrasonic
reflection.
Sonic Borehole Measurement
Sonic Borehole Measurement (SBM) method applies to measure borehole/ trench dimensions
and perpendicularity
of drilled shaft for bored pile and diaphragm wall. Test utilize the principle of
ultrasonic wave transmission from
sensor to the wall of drilled hole and is reflected to the sensore through the bentonite
slurry. The machine consists
of two unit, one is recorder and another is winch. Recorder unit controls the operation
and records the result. On
the other hand, winch unit lowers the probe (sensor) down the hole for tha ultrasonic
reflection.
Test results are presented in graphical plot and show characteristics below:
- Profile along two perpendicular axes.
- Average verticality of the hole.
- Location or depth where abnormality occurs such as reduction in diameter or collapsed wall of the hole.
- Depth of drilled hole.
| Bhulta Flyover Project | 08 nos. | 900 ~ 500 MT |
| First Dhaka Elevated Expressway Project | 05 nos. | 550 MT |
| Payra Thermal Power Plant Project | 103 nos. | 1300 ~ 600 MT |
| Payra Bridge Project, Lebukhali | 32 nos. | 450 MT |
| Bashundhara Oil & Gas Factory Project | 30 nos. | 400 MT |
| Kanchpur Bridge Project | 03 nos. | 450 MT |
| Dhaka-Khulna N8 Bridge Project | 20 nos. | 450 MT |
| Dhaleshwari Bridge Project | 06 nos. | 700 MT |
| Arial Khan Bridge Project | 06 nos. | 300 MT |
| Khulna-Mongla Rail Bridge Project over Rupsha river | 29 nos. | 855 MT |
| Abdullahpur Flyover Project | 04 nos. | 450 MT |
| 220 MW Gas/212 MW HSD combined Cycle Power Plant, Bhola | 16 nos. | 70 MT |
| Borhanuddin Power Plant project | 110 nos. | 250 MT |
| Shah Cement Factory VRM Project | 30 nos. |
| Payra Thermal Power Plant Project for NEPC | 50 nos. |
| Dhaleshwari Bridge Project for Max-Ranking JV | 5 nos. |
| Abdullahpur Flyover Project for CCECC | 5 nos. |
| Dhaka-Khulna N8 Project for Spectra Engineers LTD | 30 nos. |
| Kanchpur Bridge Project KMG for Mir Akhter Hossain LTD | 5 nos. |
| DMRT Line-6, CP-03 & 04 for ITD | 1252 nos. |
| Akhaura-Laksham Double Line Project for Toma Group | 20 nos. |
| DMRT Line-6, CP-02 for ITD-Synohydro JV | 270 nos. |
| DMRT Line-6, CP-05 for Tekken-AML-Abenikko JV | 5++ nos. |
| DMRT Line-6, CP-02 & 03 for ITD | 2330 nos. |
QA and QC Test Photo Gallery
