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No.1 SANWA AUGER MODEL D-120H-PY USED FOR BORING OF BOULDER PERMAFROST IN YKTUK SIBERIA, USSR
No.2 SANWA DOUGHNUT AUGER MODEL SDA-180KWP USED FOR DRIVING OF RAKED STEEL PILES INTO HARD SEABED IN BASRAH.IRAQ
No.3 SANWA AUGER USED FOR P.I.P. (PACKED-IN-PLACE) PILING METHOD (MORTAR GROUTING PILE) IN THE NETHERLANDS.
No.4 SANWA DOUGHNUT AUGER MODEL SDA-180P USED FOR FOUNDATION WORK OF PIPE LINE AND VEHICULAR BRIDGE SUPPORT CONSTRUCTION IN PRUDOHOE BAY IN ALASKA, USA
No.5 SANWA AUGER MODEL D-120H-PS USED FOR A PILING WORK OF PIER CONSTRUCTION IN VACAMONTE IN PANAMA
No.6 SANWA AUGER MODEL D-60H USED FOR A SOIL CONSOLIDATION WORK BY INJECTION OF CEMENT SLURRY IN UMMSAID, QATAR
No.7 SANWA AUGER MODEL D-120H IN THE PHILIPPINES' SUBIC SHIP REPAIR YARD PROJECT.
No.8 SANWA DOUGHNUT AUGER MODEL SDA-180KWP USED FOR A PILING WORK OF A PIER CONSTRUCTION IN SINGAPORE
No.9 SANWA AUGER MODEL D-60H FOR P.I.P. (PACKED-IN-PLACE) MORTAR BEARING PILE IN EGYPT
No.10

1000mm Diameter's Poured Concrete piling work using SANWA AUGER MODEL D-120H IN AL-AIN, UNITED EMIRATES

SANWA AUGER MODEL D-120H-PY* USED FOR BORING OF BOULDER PERMAFROST IN YAKTUK SIBERIA, USSR

SANWA AUGER D-120H-PY was employed for the construction of the BAM Railway across a lot of rivers. Russian's construction of new trans-Siberian railway promises to be one of the biggest construction projects of the century. Extending 3,145 km from Tashkent right through to the Pacific Ocean where the terminal will be Sowentskaja Gowan, the line of route runs parallel to the existing trans-Siberian railway, but between 150 and 180 km farther north.
The railway is named the Baikal-Amur-Magistrale (BAM for short).
Sanwa Auger D-120H-PY was used for preboring to install concrete pile foundation through permanently frost- hardened soil (Permafrost for short) prior to the construction of bridge and railway support structures.

Soil Conditions to be bored
Permafrost; Uniaxial compressive strength : more than 500 kg/cm2 Boulder 500-600 mm dia. (Content ratio: more 50%)

Average Performance of boring:
16.8m/hour ( Max.14m/min.,Min.0.3m/min )

* Former Model of D-120KP
Guide Hole for Trench Bucket at Hard Layer in Hong Kong

SANWA AUGER MODEL D-120H* (200V, 6 pole, 50Hz, 90Kw) was also used for the construction of diaphragm wall of 1 m wide and 21 m deep in Hong Kong.
The average boring speed against 500 kg/cm2uniaxial compressive strength of de-composed granite was 0.1 m/min.

* Former Model of D-120KP
SANWA DOUGHNUT AUGER MODEL SDA-180P USED FOR DRIVING RAKED STEEL PILES INTO HARD SEABED IN BASRA, IRAQ

In order to pre-bore hard clay, dense sand etc., whose conversion N-value reached 160, SANWA DOUGHNUT AUGER SDA-180P* was used at the gulf in Basra when Toa Harbor Works, one of leading Japanese general contractors, constructed a jetty there.
Especially, as raked piles should be installed there up to desired depth in hard layer, Doughnut type auger machine was requested strongly.
Inner Auger Drive Unit pre-bored the layer while Outer Auger Drive Unit driven the steel casing simultaneously rotating it in counterclockwise direction. Steel Casing protected auger flight from bending or damage by the force of sea waves, and also it kept augering straightly.
The other barge, equipped with diesel pile hammer, running after pre-bored hole, steel piles were installed and hammered vertically or obliquely until desired bearing capacity.

Period of Civil Work:
  From December 1976 to July 1977
Quantity of Steel Piles:
  Approx. 1500
  including raked piles 200
Boring Holes per Day:
  Approx.average :10 holes/day
Generator Size Used:
  250KVA x 2 Units
Subsidiary Equipment Used:
  Sanwa Mortar Mixing&Pumping
  Plant Model PM2-15
Overall View of the Job Site
* Former Model of SDA-180HW-P

Doughnut Auger Model SDA-180P mounted on the barge Leader length: 34.5m

SANWA AUGER USED FOR P.I.P. (PACKED-IN-PLACE) PILING METHOD (MORTAR GROUTING PILE) IN THE NETHERLANDS

Piling Procedure




SANWA DOUGHNUT AUGER MODEL SAD-180P USED FOR FOUNDATION WORK OF PIPE LINE AND VEHICULAR BRIDGE SUPPORT CONSTRUCTION IN PRUDOHOE BAY IN ALASKA, USA

By simultaneously augering and casing against unstable tundra thaw deadline to complete pipe line and vehicular bridge supports across Alaska's Sagvanirkok River.
Contractor for the project is M-F-G, a joint venture of Manson Const.& Engineering Co. and Osberg Const. and Ghemm.
M-G-O used the double augering-casing action of Sanwa Doughnut Auger SDA-180P* to install 24 foundations through crumbling permafrost prior to constructions of bridge support piling structures. The equipment's heavy duty cutting head cut through river ice and permafrost up to 33 me thick while a rotation caisson held back salt concentrate soil layers which threatened to collapse the hole.
Working through temperatures wind-chilled to minus 100 C more than 500km north from the arctic Circle.
In spite of bad weather and material's delay, and requirement of precision, M-O-G completed the project nearly one week ahead of May 1st, construction deadline.
At the 6m level, the casing was extracted. If the soil boring warranted, M-O-G either welded a 15m section to the 6m casing, or substituted 18m caisson for the remainder of the augering operation.
M-O-G then centered a 914.4mm (36 inch) O.D. Steel Pipe pile and a capped bottom into the 1,219.2mm (48inch) I.D. casing. Throughout the total length, wall clearance was critical for proper set of Fondue cement to meet skin friction requirement, and for alignment of pile caps.
The 914.4 mm (36 inch) piles were cut approximately 1.5m above ground level, and welded to pile extractions on the I-shaped Beam caps.
Pile sections were then filled with gravel to strengthen the pipe against possible pressure change in tundra.

Average Augering Speed = 4m/hour(Max. 6m/hour)
Average Piling Speed = 1 pile/day

* Former Model of SDA-180HW-P





SANWA AUGER MODEL D-120H-PS USED FOR A PILING WORK OF PIER CONSTRUCTION IN VACAMONTE IN PANAMA


There must be piled to basalt stratum whose uniaxial compressive strength was more than 600kg/cm2.
But it was impossible to pile by diesel hammer and therefore Pre-boring method by Sanwa Auger Model D-120H-PS* was adopted to solve this problem.
By Japanese contractor: Aoki Construction Co.,Ltd.
* Former Model of D-120KP

Result of Augering By Sanwa Auger
Augering Conditions
1)Both swelling and wave of sea are very little.
2)Auger Flight = 710mm
3)Auger Head = 730mm w/tungsten carbide tipped bit
4)Water Injection Capacity = 207 liter/min.
at Vacamonte Fishing Port/May 25,1977



Sanwa Auger Model D120H-PS
SANWA AUGER MODEL D-60H USED FOR A SOIL CONSOLIDATION WORK BY INJECTION OF CEMENT SLURRY IN UMMSAID, QATAR
Two units of Sanwa Auger Model D-60H* have completed soil consolidation work for jetty construction in Qatar in very short period; each completed four soil column per hour, by Penta-Ocean Construction Co.,Ltd., one of the leading Japanese general contractors.
When the Sanwa Auger D-60H reached the desired depth-- about 17m below the seabed-- a mixture of seawater and cement was injected into the hole through a swivel device, hollow stem of Auger Flights, Agitating Head when Auger Flights were extracted and mixed with soil in order to increase its bearing strength.
As it was important to keep extracting speed and consolidating scope of soil, speed meter and depth measure meter were equipped in operator's room.
* Former Model of D-60KP

Period of Work:
  From December 1976 to March 1977
Quantity of Boring :
  approx. 5000
Generator size used:
  200KVA
Subsidiary Equipment Used:
  Sanwa Mortar Mixing &Pumping Plant PM-15
  Mixing Capacity: 500 litters x 2
  Water tank : 4,000 litters
  Discharge : 0 - 281 litters/min.
  Discharge pressure: 0 - 14 kg/cm Tested


Sample of Consolidation Mixed with Cement slurry and Reclaimed Soil


Overall View of D-60H
SANWA AUGER MODEL D-120H IN THE PHILIPPINES' SUBIC SHIP REPAIR YARD PROJECT.

Sanwa Auger D-120H was used for a foundation work of constructing a ship repair yard in the subic area in the Philippines.
The foundation work was to bore and insert H-box piles or sheet piles to construct water-tight walls. On May 1980, the work was started by a Japanese leading general contractor, Penta-Ocean Construction Company.
As the soil was composed of big boulders, the foundation work was very difficult we have never had before. To bore such soils under hard boring conditions and to construct water-tight walls, specially designed equipments were used,i.e.,
  1. Sanwa Auger Model D-120H*
    45kw x 2 units, 6 Pole
    Rated torque: 6.32 Ton-m
    Break down Torque: 22.7 ton-m
    * Former Model of D-120KP
  2. Heavy -duty Auger head
    Two types of tungsten carbide tipped bits, which were fitted to the point of the Auger Head, were used; one was for boulders and the other for peridotite layer.
  3. Heavy- duty Auger Flight
    Torque tube and blade of the Auger Flight were made much durable than the standard.
  4. Heavy-duty Casing Crown Bit (Core Tube)
    The Crown Bit was used for cutting big boulders and preventing bore hole from deviation. Tungsten carbide tipped bits were fitted at the end of 8 meter long tube.
  5. Crescent Guide Pipe
    The crescent Guide Pipe were inserted into bore hole and used for conducting Auger Flight along the Crescent form, keeping already -bored hole vertically and permitting bored holes to be overlapped.
  6. On-The-Ground Fixing Type Holder
    The specially designed Auger Holder was tightly fixed on the ground to prevent Auger Flight from swinging when Auger Head hits big boulders, Conventionally Auger Holder is fixed apart from the ground to Leader of Crawler Crane.

Auger D-120H bored a hole down to max. 19.0m depth, while injecting Bentonite Slurry. When extracting Auger Flight began to be extracted, Poor cement slurry was grouted to the bored hole, and then Auger Flight was wholly extracted. Crescent Guide Pipe was inserted into the bored hole. Auger D-120H began to bore the adjoining soil along the crescent Guide Pipe. The crescent Guide Pipe was extracted and then H-box elements or Sheet Piles were inserted into the hole.

Construction Rate
Four (4) Holes per Eight (8) Working Hours.




Bored Hole in the boulder layer


Boring with bentonite solution
SANWA DOUGHNUT AUGER MODEL SDA-180KWP USED FOR A PILING WORK OF A PIER CONSTRUCTION IN SINGAPORE

Sanwa Doughnut Auger SDA-180KPW* was used for a piling work for a pier construction in the Pulau Hantu Island in Singapore. The Pulau Hantu Island is located between the main island of Singapore and The Sentosa Island.
The piling work was started by McConnell Dowell S.E.A. Pte Ltd, Singapore in June 1982, on the sea carrying the Auger SDA-180KWP on a pontoon.
As raked piles should be installed up to desired depth in the sea bottom, doughnut type auger equipment was requested strongly.
Each Auger Drive Units rotated the Auger Flight and Casing simultaneously in counter direction. After reaching the desired depth, Auger Flight was extracted leaving the Casing. Cement slurry was grouted at the bottom of the hole for Pile settlement. After Concrete Pile was inserted into the hole, the Casing was extracted.
The Casing protected Auger Flight from bending or breaking by force of sea waves, and also it kept boring straightly.
After 6 months, 212 pcs of raked piles(18 degree) and 188 pcs of vertical piles were executed.

* Former Model of SDA-180HW-P

SANWA AUGER MODEL D-60H FOR P.I.P. (PACKED-IN-PLACE) MORTAR BEARING PILE IN EGYPT

In February 1980, Sanwa Auger D-60H-4S* and Sanwa Mortar Mixing&Pumping Plant PM2-15 were used for constructing P.I.P.Bearing Pile for a 30 stories building in Alexandria in Egypt.
As the job site was situated under a sharp cliff of sandy rock very closed to the Mediterranean Sea, and might be collapsed by vibration, P.I.P. (Packed-In-Place) Method was adopted for avoiding vibration by conventional dynamic piling method.
After boring down to the 10.5m depth by the Auger D-60H-4S, Cement Slurry was grouted into the bored hole through the 4-inches diameter hollow stem of Auger Flight by the Grout Pump provided on the PM2-15, while Auger Flight was extracted from the bored hole.
Then, Reinforcing Steel Cage was inserted into the bored hole filled with the Cement Mortar.

* Former Model of D-60K-4S
Job site under the sharpe cliff of fine sand


Constructed P.I.P. Piles

Reinforcing Steel Cage
1000MM DIAMETER'S POURED CONCRETE PILING WORK USING SANWA AUGER MODEL D-120H IN AL-AIN, UNITED ARAB EMIRIES

Four (4) units of Sanwa Auger D-120H* was used for foundation work of constructing a cement plant in Al-ain United Arab Emirates.
The foundation work was started in September 1978 by Japanese leading plant manufacture, Ishikawajima Harima Heavy Industries (IHI). The layer's uniaxial compressive strength was 300kg/cm2. * Former Model of D-120KP
At first, boring down to desired depth of 12 m by Auger D-120H was done taking only 20 minutes.
Then, slime treatment to remove remained soil at the bottom was executed by Auger Bucket taking 20 minutes. Into the bored hole, Reinforcement Cage was inserted and Concrete was poured. Totally it took approximately 120 minutes to complete one pile.