CENTRAL BANK OF LEBANON - dst-engineers.com · High-strain pile loading test ... Pile load test on...

DST, established in the early 70’s, is a firm providing engineering and contracting services. We specialize in geotechnical, rock mechanics, and environmental works and engineering. In-situ testing and drilling, and laboratory testing for soil, rock, concrete, and asphalt are complimentary services provided through our laboratory. The head office in Canada is located in Thunder Bay and the branch offices are across Canada and USA, and the head office in the Middle East is located in Lebanon. Typical projects are special deep (pile) foundation systems, deep excavation shoring systems, tunneling works, earth dams, soil improvement and stabilization systems, etc. Executed projects, with value ranging up to US$ 30 million, are in Canada, USA, Middle East (Lebanon, Syria, etc.), and Africa (Nigeria and Gambia) A staff of over three hundred personnel in Canada and over fifty in Lebanon, with technical expertise ranging from junior to 30 years of experience, is dedicated to serve the client’s needs. The staff is involved in contracting, field investigation and testing, as well as research and development in the field of our expertise. The research work is published in technical literature and conferences. DST maintains and works through its own laboratory in Canada and Lebanon. The laboratory is equipped with advanced equipment and is maintained in accordance with approved standard for testing and materials such as ASTM, AASHTO, and BS. Furthermore, DST maintains state-of-the-art in-situ testing. Typical equipment available in Lebanon is dynamic cone penetrometer, field vane testing, Menard pressuremeter, nuclear densometer, high-strain dynamic testing, non-destructive low-strain integrity testing, plate loading test, pile static loading test, anchor pull-out test, etc. At DST, we recognize the pivotal importance of the relationship between economy and integrity of construction aspects. Through each of our offices, we offer a comprehensive program for most economic and effective design and specifications that is fully backed up with on-site technical expertise for implementation and control. Our design and solution use state-of-the-art approaches and recognized methodologies that meet the specific requirements of the sites. All design aspects are supported with our full laboratory testing services and in-situ testing and investigation procedures. DST is committed to provide quality and state-of the-art services that economically meet our clients’ expectation. Projects delivered successfully on time are our goal and pride. DST’s client base varies from the private sector to the governmental departments. A wide range of projects have been carried out including residential, industrial, commercial, health center, institutional, highways, and nearshore structures. DST’s construction equipment is diversified from small size, where project space is a constraint, to large and heavy equipment. Below is a list of selected equipment for geotechnical works:

1. Pile drilling rigs for bored piles, CFA piles, diaphragm walls, etc. 2. Vibratory hammers for driven and extraction of piles and sheet piles 3. Track mounted rotary drill rigs for micropiles anchors and underpinning – CMV 4. Track mounted rotary drill rigs for grout injection - Casagrande 5. Crawler rotary and trailer mounted drill rigs for special applications 6. Portable rotary drilling equipment suitable for difficult access and inclined drilling 7. Shotcrete equipments, dry mix, with varying capacity 8. Grout stations, high-speed mixer, agitator, piston pump, up to 100 bar press. cap 9. Miscellaneous support equipment and cranes

COMPANY PROFILE http:// www.dstgroup.com/

Middle East

Head Office Lebanon

Services

Engineering

Highways

Material Testing

Geotechnical

Geotechnical Works

Piling Diaphragm Wall

Anchors/Nails/ Micropiles

Special Works

Shotcrete

Canada & USA

Head Office Thunder Bay

Branch Offices

Ottawa, Ontario Montreal, Quebec

Regional, Branch Mgr Georges Thomas

Kenora, OntarioBranch Manager Jeff Anderson

Sudbury, Ontario Branch Manager Brad Bowman

Minneapolis, U.S.A. Branch Manager

Steve Gale

Services Div. Tech. Manager

GeotechnicalRobin Crowley

Environmental Todd Kondrat

Material TestingBruno Cenedese

Building ScienceWayne Hurley

Mining Andrew Mitchel

HighwaysKayla Dixor

O r g a n i z a t i o n a l C h a r t

Building Science

D S T

Berlina (H-beam) Wall

Dewatering

Cut-off WallsWell point systemSuction pump

Bored PilesTangent Piles

Secant PilesDiaphragm

Sheet PilesAnchorsNails

Shotcrete

Retaining System Soil Improvements

Slope Stabilization

Nails ShotcreteGeogrid/textile

Dynamic Compaction

DrainsSand DrainsStone ColumnsPiles/micropilesGrout Injection

Nails

Preconsolidation

Geogrid/textile

Bored Continuous Flight Auger (CFA)

Precast/Prestressed ConncreteSteel Pipe H-piles

Bored Driven

Micropiles Piles Special works

Cast-in-place

Driven Piles

Micropiles

Deep Foundation

Underpinning

Earth Structures

Tunneling

Reinforced Walls

Tailings Dams

Embankments

Preconsolidation

Roads Reinforcement

NailsShotcreteGeogrid/textile

D S TConstruction Services

Geotechnical Works

MATERIAL TESTING

SERVICES

DESCRIPTION ASTM DESIGNATION A. Soil

1. Atterberg limits LL, PL, PI D-4318 2. Bulk and dry density D-2140 3. Consolidation test D-2435 4. Direct shear D-3080 5. Triaxial test D-2414 6. Unconfined compression D-4219 7. Hydrometer test D-422 8. Moisture content D-2216 9. Proctor test, normal D-698 10. Proctor test, modified D-699 11. Field density (3 points) D-1556 12. C.B.R. test, unsoaked D-1883 13. C.B.R. test, soaked 14. Sieve analysis, dry D-410 15. Sieve analysis, washed D-412 16. Sand equivalent test D-415 17. Specific gravity D-854 18. Falling head permeability test 19. Constant head permeability test 20. Penetrometer test 21. Carbonate content 22. Chlorides and sulfates – each Qualitative 23. pH - soil 24. Soundness- aggregate (3 cycles) 25. Point load index test - rock 26. Compressive strength test - rock

B. Concrete

1. Compressive strength test - Cylinder and cubes C-39

2. Flexural strength C-42 3. Concrete core C-78 4. Schmidt hammer test 5. Sulfate test, Chloride test MTO Method 6. In-situ coring 4” diameter 7. In-situ coring 6” diameter

MATERIAL TESTING AND CONTROL LABORATORY TEST

DESCRIPTION ASTM DESIGNATION C. Aggregates

1. Point load index C-735 2. Sand equivalent D-2419 3. Sieve analysis, dry C-136 4. Absorption C-274 5. Los Angeles C-128 6. Moisture content C-566

D. Asphalt

1. Bulk density and layer identification 2. Extraction and gradation 3. In-situ coring

E. Steel

1. Hardness 2. Tensile strength test ASTM - 617 3. Bending test

F. In-Situ Testing

1. Field investigation and assessment - Geotechnical, Environmental, Structural, Pavement

2. Dynamic cone test – DCPT 3. Standard penetration test – SPT 4. Field vane test – FVT 5. Pressuremeter test - PMT 6. Plate loading test 7. Permeability test 8. Water flow and migration test

9. Pile loading test

10. High-strain pile loading test 11. Low-strain pile integrity test 12. Anchor load test 13. Deformation monitoring system

14. Special application may be designed to suit project specifics

MATERIAL TESTING AND CONTROL LABORATORY TEST

Engineering Services

- Planning - Design - Testing-

PROJECT SPECIFICS EQUIPMENT CLIENT

1. Palais de Justice Bridge Intersection Adlieh, 1995

Pile load test on six 800 mm bored piles up to 1400 tons capacity

- High-strain testing equipment

- Dynamic load

Ashada

2. Hospitals & Health Centers Lebanon 10 hospitals across Lebanon (south through north),1995

Geotechnical study for foundation design and service facilities

- Deep Rock Drill DR-150

- Casagrande C6 - Laboratory

Khatib & Alami

3. Tripoli Entrance Bridge Tripoli, 1995

Concrete assessment and testing

- Laboratory Makhlouf Ets.

4. Salhab Center Hamra, Oct 95

Investigation for foundation and retaining system design


- Acker

Mr. Assad, Eng.

5. Beit Mery Residential Bldg. Beit Mery, Nov 95

Investigation for landslide and stability design


- Laboratory

Mr. Elie Abboud, Arch.

6. Zahle-Wadi Alarayech Bridge Zahle, Feb 96

Geotechnical study foundation design, retaining system, and slope stability


- Laboratory - Acker

Public Work Ministry

7. Kashkoush Tunnel Jeitta, Jul 96

Investigation and design underground tunnel 140 M. in rock/marl

- Deep Rock Drill DR-150, rig type

- Casagrande C6 - Laboratory

Estephan / ICAR

8. Sands Ouzaii Tunnel Project Ouzaii, 1996

Geotechnical study for 3.5 km of tunneling, and tunnel top stabilization


- Laboratory

Impressem Batco J.V.

9. Permanent Shoring Sin El Fil, Nahr Ashrafieh, May 96

Investigation of retaining system stability, long and short term aspects, materials testing, evaluation of concrete quality and seismic design

- Casagrande C6 SNAM

ENGINEERING SERVICES Beirut, Lebanon


10. Chiyah Infra-Structure Chiyah, Feb 96

Investigation and design of no-displacement retaining system using micropiles, and tangent concrete piles for a road stretch of 800 l.m.


- Laboratory

Hourie Ent.

11. Residential Development Monsef Jan 96

Investigation for rock quality and foundation design of nearshore structures

- Casagrande C6 SOKAM

12. Azar Commerce Development Autostrade, Antelias, Jun 97

Investigation for foundation retaining system design and dewatering


SBS Engineering and Contracting

13. City Center Building BCD, Sept 97

Building Science, assessment of concrete quality, soil investigation, and laboratory testing


- Acker - Concrete coring

mobile drill - Full scale load

test - Laboratory

Solidere

c/o Mr. Antoine Abi-Samra

14. Pine Center Furn El Chibak, May 97

Geotechnical investigation, bearing capacity, settlement, excavation aspects

- Deep Rock Drill DR- 150

- Laboratory

Modenco

15. Road Rehabilitation - Kartaba Kartaba, Mar 97

Road assessment and geotechnical evaluation

N/A Akl & Jorr

Assoc./ PW

16. Mouawad Village Broumana, Nov 97

Design of vertical open cut excavation using nails and shotcrete

- Casagrande C6

MMM Management and Bouygues

17. German Community Center Beirut, Jun 98

Evaluation and assessment of existing structure and foundation for expansion purposes

- Core Drill - Laboratory

Mr. Acra

18. Banque de Liban Hamra, Apr 98

Site investigation, assessment of bearing capacity and settlement


- Laboratory

Ashada

19. Serail Jdeideh Jdeideh, Jun 98

Site investigation, assessment of bearing capacity and settlement


- Laboratory

NAH

ENGINEERING SERVICES Beirut, Lebanon

Geotechnical Works

- Construction Activities -


1. Port Alberni Redevelopment British Columbia, Canada

Driven Pile Foundation prestressed Concrete Piles

- Double acting diesel Hammers - Delmag

BC Port Authorities

2. Canadian Force Base Halifax - Canada

Driven Steel H-piles

- Berminghammers B300

Public Works- Canada

3. CFPF Modernization Plant Northern Ontario, Canada

Installation of concrete and steel piles

- Delmag and Berminghammers

CPFP

4. Desease Control Center Winnipeg, Canada

Installation of 600mm 900mm and 1200mm bored piles

- Mechanical rotary drill rigs and BG11 Hydraulic rig

Public Works Canada

5. Canada Post Headquarters Ottawa, Canada

Installation of 900mm and 1000mm bored piles

- Mechanical rotary drill rigs

Canada Post

6. Manitoulin Health Center Winnipeg, Canada

Intallation of 600mm expanded base piles

- Mechnical rotary rigs with reaming shells and hammer

Public Works Canada

7. Ballantyne Pier Redevelopment Vancouver, BC, Canada

Installation of prestressed concrete piles 900mm hollow stem for uplift and bearing capacity

- Rotatry drill rigs and Hera 1500 air steam hammer

Port Authorities

8. Port of Los Angeles LA, USA

Installation and testing of foundation piles 600mm –Installation by means of jetting and driving last 10-15m

- Variable pile driving hammers

CH2M Hill and port Authorities

9. Industrial plant facilities Expansion South Carolina, USA

Installation of bored piles and testing – 500mm and 700mm piles with expanded base.

- Rotary drill rigs with reaming shell and hammers

Franki Piles USA

10. Banana Island Residential Complex Lagos, Nigeria

Installation of bored piles and testing – 600mm with 40m deoth.

- Rotary drill rigs Fundex F4201 with double rotary for casing and CFA auger

ITB Ingenieurs Nigeria

GEOTECHNICAL WORKS Canada, USA , and Africa

PROJECT SPECIFICS DRILL RIGS CLIENT

1. Sands Ouzaii Main Tunnel Haret Hreik, Dec 95

Crown stabilization using 150mm micropiles


Impressem Batco

2. Thermoplast Industrial Building Dekwaneh, Aug 95

Shoring system 15 m deep consisting of Berlina type wall H-pile with concrete blocks and anchors


- Piling rig

Haladjian

3. Sands Ouzaii Main Shaft Haret Hreik, Jan 96

400 mm bored piles 24 m deep for 8.5 m circular shaft

- B150e piling rig Impressem Batco

4. Road Stabilization Deir Dmit to Chouf, Apr 96

Installation of micropile to depths of up to 20 m in a grid for earth stabilization

- Casagrande C6

Hourie Ent.

5. Zahle-Ward Center Zahle, Dec 96

Retaining system, 600 mm O.D. bored piles 20 m deep

- B150e piling rig Touma Engineering

6. Chiyah Infra-Structure Chiyah, Feb 96

Installation of retaining sheet piles, micropiles, tangent concrete piles for a road stretch of 800 l.m.


- B150e piling rig - ICE 815C 9 tons

vibrohammer

Hourie Ent.

7. Sand Drain Piles for Ashrafieh-Nahr Connection Nahr, 1996

Installation of 400 mm sand drain piles for bridge connection

- B150e piling rig SNAM

8. Concrete Pile Wall Sin El Fil, Nahr, Ashrafieh, May 96

Installation of prestressed anchors up to 18 m long and 60 tons capacity

- Casagrande C6

SNAM / Batchy

9. Tunnel Excavation Support BCD, 1996

Installation of 800 mm bored piles

- B150e piling rig Bauer

10. Mar Youssef / Naggiar Hospital Expansion Mar Youssef, Mar 96

Installation of anchors prestressed up to 60 tons

- Casagrande C6

Soltravo

GEOTECHNICAL WORKS Beirut, Lebanon


11. Sands Ouzaii Infra-Structure Ouzaii, 1997

Installation of shoring system consisting of bored piles

- Casagrande C6

Impressem Batco J.V.

12. Ermitage Retaining System Tabaris, Jan 97

21 m deep shoring system consisting of piles and anchors

- Drill rig C6

Ermitage

13. Medica Center Ashrafieh, Feb 97

Installation of shoring system consisting of cast-in-place walls and anchors

- Casagrande C6

Tahhan Group for Trading and Contracting

14. Biakout Residential Dev. Biakout, May 97

Installation of 120 mm micropiles for earth stabilization


Zetco

15. Excavation Shoring Work Pine Center Furn El Chibak, Jun 97

Retaining system using nails and shotcrete


- Shotcrete pump

Modenco

16. Kashkoush Tunnel Construction and Maintenance Implementation Jeita, 96-97

Design and construction of 140m tunnel and rehabilitation techniques

- Casagrande C6 - Shotcrete

Pumps

Kuwait fund support and Icar Construczioni sp.a.

17. Banque du Liban Block B, C, D, 1997/1998

Shoring system for up to 19 m deep using piles, anchors, nails, and shotcrete

- B150e - Casagrande C6 - CMV

Ashada

18. Lot 298/303 Mezher Antelias, Sept – Nov 98

Stabilization system consisting of micropiles, anchors, and nails

- Casagrande C6 - B150e

Khoueir & Mouccarri Ets.

19. Serail Jdeideh Jdeideh, Sept 98

Shoring system for up to 9 m deep, of 800 mm O.D. piles, anchors, and shotcrete

- B150e - Casagrande C6

NAH

20. Military Health Club Kaslik, Dec 98

Deep foundations, piles CFA 400 mm O.D.

- B150e

Labaki Development



21. Plot No. 24 - Zokak El Blat Underpinning Works

Beirut - Solidere, March 99

Underpinning Works

Addition of underground parking below existing renovated multi-storey structure.

- CMV 600/900 Rig

CEC

22. Kobrosli Residential Building Lot 4432 –

MazraaMazraa - May 99

Shoring Works using piles and anchors for up to 8m depth.

- Casagrande C6

SBS

23. Manamah Residence

Tareek Al Jdeedeh - Feb 2000

Shoring System for up to 16m depth using piles, anchors, and shotcrete.


DCC

24. Medawar 77 Residential Build

Gemayzeh - Feb - 2001

Shoring system for up to 17.5m depth using cast-in-place plates, anchors, and nails.

- CMV 600/900 Rig

Shelter s.a.l. (Lebanon)

25. LEA II - Residential Building

Lot 4227 – Mouseitbeh

Unesco - March 2000

Shoring system for up to 12m depth using piles, anchors, and shotcrete. Soil Reinforcing as pile foundation using CFA piles.


DCC

26. Verdun Twins Lot 1311 - Ras Beirut Verdun - March 2001

Shoring System for up to 21m depth using piles, anchors and shotcrete. Pile foundation works.

- B150e Casagrande C6

A & M Hassoun

27. Port of Beirut Entrance

Beirut - June 2001

Pull-out load test for micropiles, design, and construction of 180mm O.D. 16m deep micropiles for foundation works.

- CMV 600/900 Rig

- Casagrande C6

Hourie Ent.

28. Clemenceau Hospital

Beirut - July 2002

Shoring system for up to 29m depth using concrete plate, recessed whaler beams, anchors & nails. Micropiles were used for the upper 6m-8m depth.

- CMV 600 - CMV 900 - Casagrande C6

Khatib & Alami


DST Selected Projects

Prof i les

DST

BROCHURES

CENTRAL BANK OF LEBANON Client: Central Bank of Lebanon Ashada – Entreprise general

Project value: US $16.5 Million Year Executed: 1998 City: Beirut Country: Lebanon

Project description:

Expansion of the Central Bank of Lebanon involved the construction of three new buildings surrounded by existing multi-storey building. Each new structure consisted of several underground floors. Maximum reached depth of excavation was 19 m adjacent to existing multi-storey buildings. The work involved design and execution of the shoring and underpinning works for the three buildings - Block B, C, and D. The geotecnical works was US $1.6 million.

MANAMAH RESIDENCE BUILDING

Client: DCC

Project value: US $8.5 Million Year Executed: 1999-2000 City: South Beirut Country: Lebanon


Manamah Residence is located adjacent to the Arab University and it consists of a high-rise furnished apartment for students. The soil consisted of sand deposit with some silt. Surrounding the site existed several multi-storey buildings with their foundation being on the property limit. A shoring and underpinning system was designed and implemented to enable excavation depth to be carried out to 15 m. The works involved the installation of cast-in-situ piles and multi-rows of prestressed anchors and shotcrete. Value of geotechnical works was US$1.1 million.

KASHKOUSH TUNNEL Client: Ministry of Energy and Water Resources (Icar Construzioni sp.a.)

Project value: US $4.5 Million Year Executed: 1997-1998City: Keserwan - Jeitta Country: Lebanon


The project involved the execution of a 140 l.m. tunnel in rock to reach a water main spring source and divert the water to the main water treatment and distribution plant in Dbayeh. Works involved geotechnical investigation, design using NGI method, and execution of tunneling by means of micro-blasting. Geotechnical works value was US$3.6 million.

OUZAII - HARET HREIK TUNNEL SHAFT Client: Council for Development and Reconstruction (Impressem-Batco J.V.)

Project value: Approx. US $7.6 Million Year Executed: 1995-1997 City: Beirut Country: Lebanon


The project involved the construction of a 5.5 x 3.5 m horse shoe shape tunnel in a sand and clay soil condition. The tunnel stretch was 3.2 km and its crown overburden has reached approximately 72 m. The tunnel was designed for storm water collection. The work involved geotechnical investigation for the main tunnel, main shaft, and underground culvert. The main shaft was 8.5 m in diameter and 28 m deep connecting three tunnels. It was constructed using tangent piles with circular bracing and shotcrete layer. The tunnel was designed based on NGI method and crown stabilization by means of chemical injection and nailing. Value of geotechnical works US$4.5 million.

HYDRAULIC BACKFILL AND DREDGING LEBANON INTERNATIONAL AIRPORT

Client: CCC Hochtief J.V.

Project value: Approx. US $1.6 Million Year Executed: 1996 City: Jiyeh Country: Lebanon


The work involved assessment of hydraulic fill material, near south of Lebanon, for dredging and backfill of the newly constructed landing strip at the International Airport - Lebanon. The work involved an offshore testing campaign from a jacked-up barge to evaluate the existing seabed material for dredging purposes, and its suitability as backfill for a landing strip on reclaimed land.

INFRASTUCTURE RE-HABILITATION Client: Council of Development and Reconstruction Hourie – Entreprise General

Project value: US $11.0 Million Year Executed: 1996-1997 City: Beirut Country: Lebanon


The project involved the rehabilitation of infrastructure at the Southern part of the city of Beirut. The work involved the installation of various diameter storm water drainage pipes (up to 2200 mm O.D.) in urban and heavily populated areas. Details of the work involved the installation of bracing system up to a depth of 9 m along approximately 3 km road. The bracing system consisted of either steel sheet piles or cast-in-situ piles based on the adjacent structures condition. That is using normal pile driving or vibration free pile installation. Thereafter, the work involved the installation of GRP pipes, backfilling, compaction and re-pavement of the roads. Our work concentrated on the geotechnical aspects of bracing, excavation, backfilling, and compaction. Geotechnical work value was US$ 1.2 million.

BALLANTYNE PIER REDEVELOPMENT Client: Vancouver Port Authority

Project value: Cdn $16 Million Year Executed: 1990-1994 City: Vancouver, B.C. Country: Canada


The work involved the rehabilitation of Ballantyne pier. Phase I of activities involved the geotechnical investigation works, designing new foundation, performing of index test piles, driving of pre-cast 910x125 mm prestressed hollow concrete pipes, and performing in-situ testing procedures to confirm design of foundation works. Phase II involved the demolition of existing structures, installation of the foundation works consisting of driven pre-cast prestressed concrete piles and the erection of the new Pier. Our activities concentrated on the geotechnical works for a value of Cdn$3.5 million.

CANADIAN FORCE BASE - HALIFAX Client: Public Works Canada

Project Value: Cdn $3.5 Million Year Executed: 1993 City: Halifax Country: Canada


The project consisted of the re-construction and re-habilitation of Canadian force base in Halifax. The work involved the installation of approximately 3200 steel H-piles by means of pile driving. Thereafter, a complex of warehousing and other facilities were constructed. Pile foundation works value was Cdn $3.5 million.

HOTEL DE VILLE Client: Allied Investment Group

Project Value: US $6.7 Million Year Executed: 2002-2003 City: Ras El-Nabih Country: Lebanon


The project consisted of a 3 underground storeys and 11 upper floors. The project is located adjacent to the University of Saint Joseph - Beirut. The project is a furnished studios for students. The geotechnical work involved the installation of dewatering system by means of six deep wells to lower the water table about 4m from existing level. Also, the shoring system consisted of piles and concrete plates with multi-level anchors for lateral support. Geotechnical works value was US$300,000.

CLEMENCEAU MEDICAL CENTER

Client: Real Estate Plaza Co Khatib & Alami Consolidated Engineers and Consultants

Project Value: Cdn $23.5 Million Year Executed: 2002 City: Beirut Country: Lebanon


Clemenceau medical center occupies 2500 m2 of land with 6 underground floors and 7 upper floors. The center is dedicated for special medical treatment. The geotechnical works involved excavation and shoring for a maximum depth of 30 m adjacent to multi-storeys residential building. The total geotechnical works value was US$1.2 million.

VERDIN TWIN CENTER

Client: Bank of Beirut and Ryadh Hassoun Bros.

Project Value: Approx. US$5.5 Million Year Executed: 2001 City: Beirut Country: Lebanon


Verdun Twins is a commercial office tower with 6 underground parking floors accessed by means of two car elevators from the first basement and 10 upper floors. The tower is located on an 800 m2 lot in the center town of Beirut. Maximum depth of excavation was 23 m. the geotechnical works involved cast-in-situ piles and multi-level anchors. The total value of geotechnical works was US$300,000.

BROUMANA MOUAWAD VILLAGE

Client: Mouawad Group Triple C Co..

Project Value: US$150,000 Year Executed: 1998 City: Broumana Country: Lebanon


This excavation work is 19 m deep vertical cut in a cemented sand formation as part of an overall US$70 million development project consisting of Hotels, furnished apartment, residential units, and clubs. The geotechnical work consisted of installing nailing and shotcrete. Where sand layer were not cemented, micropiles were used prior to excavation in order to provide temporary stability, then nailing and shotcrete were applied.

HAMILTON MARINE DOCK DEVELOPMENT

Client: Municipality of Hamilton Bermingham Construction

Project Value: US$100,000 Year Executed: 1987 City: Hamilton, Ontario Country: Canada


The project involved the installation of steel pipe piles nearshore using diesel impact hammer. The piles are used for the construction of small dock for leisure boats. The pile installation was carried out from a jack-up barge. Pile embedment depth reached a maximum of 15 m.

MEDAWAR 77 TOWER

Client: Shelter Group s.a.l. Project Value: US$3.2 Million Year Executed: 1999 City: Gemeyzeh Country: Lebanon


Medawar 77 Tower consisted of 5 underground floors as parking and 13 upper floors. Total depth of excavation reached 17.5 m adjacent to existing strucures with no foundation. The water table was present at 12.5 m. dewatering was carried out using pump pits and water pumps. The shoring work was carried out with a maximum allowed thickness of shoring no exceeding 200 mm in order to maximum the use of the small size plot (450 m2). Micropiles and cast-in-situ concrete plates were used with anchors for lateral support. The value of geotechnical works was US$200,000.

KHANNAK BRIDGE - TRIPOLI

Client: Somac Group s.a.r.l. Project Value: Approx. US$4.5 Million Year Executed: 2003 City: Tripoli Country: Lebanon


The shoring work consisted of reinforcing a sloped terrain reaching about 30 m in altitude. Scattered multi-storey structures existed within the sloped area. The shoring consisted of multi-level soil nailing and shotcrete. The treated wall height ranged up to about 8 m high and 60 m in length along the newly developed Khannak bridge structure. The soil consisted of an upper clayey sand deposit with a conglomtrate of boulders deposited over a highly weathered bedrock layer with numerous cavities. The value of geotechnical works was approximate US$100,000

1331 PARK AVENUE - BCD SOLIDERE

Client: Lona I Investment s.a.l. Project Value: Approx. US$7.5 Million Year Executed: 2004 City: Beirut Country: Lebanon


The project consists of a 7 seven storeys commercial building with 3 underground parkings in the central district of Beirut. The depth of excavation is about 2.5 m below ground water table. The shoring work consisted of reinforcing concrete plate with recessed whaler beams and multi level of anchors and nails. Maximum depth of excavation was about 13.75m. The soil consisted of an upper clayey sand deposited over a highly weathered marlstone bedrock layer with numerous cavities. Curtain wall and grout blanket was constructed for water cut-off. The value of geotechnical works was approximate US$350,000

Micropiles

Grout Blanket Curtain Wall

LOT 7970 KFARZEBIAN FAKRA CLUB

Client: Mr. Samir Badro Project Value: Approx. US$1 Million Year Executed: 2004 City: Fakra Country: Lebanon


The project consists of a multi storeys residential building with underground parkings in the central park of Fakra Project in Kfarzebian. The depth of excavation is about 10 m below existing road level. The shoring work consisted of reinforcing shotcrete plate with recessed whaler beams and multi level of nails. The soil consisted of an upper clayey sand deposited over a highly weathered claystone bedrock layer. During winter season, water seepage is of concern. The shoring system ws performed to maintain the excavation open during winter snowing season.

Shotcrete

Drains

LOTS NOS. 861- 868 KFERTAY FAKRA CLUB

Client: Nassar Engineering Mr. Maher Abu Ghazale Summer Residence Project Value: Approx. US$1.5 Million Year Executed: 2004 City: Fakra Country: Lebanon


The project consists of a multi storeys residential building with underground utility room, swimming pool, and parking in the central park of Fakra Project. The depth of excavation is about 12 m below existing road level. The shoring work consisted of reinforcing shotcrete plate with recessed whaler beams and multi level of nails. The soil consisted of an upper clayey sand deposited over a highly weathered marlstone and claystone bedrock.

HIGHWAY ACCESS EXTENSION PROJECT SEOUL- S.KOREA

Project Value: Approx. US$5.5 Million Year Executed: 2002 City: S.Korea Country: S.Korea


The project consists of extension and rehabilitation of an existing bridge. The works was carried out in J.V with Kyung-In in South Korea. It involved the installation of 600 mm cast-in-situ steel cased pile to a depth ranging up to 26 m. The piles were installed from a jacked-up barge. The pile installation was carried out using a double rotary system whereby the casing is installed permanently.

PORT OF BEIRUT – MAIN GATE ENTRANCE

BEIRUT, LEBANON

Client: Entreprise Hourie Consultant: Dar Al Handasah Project Value: Approx. US $0.75 Million Year Executed: 2000 City: Beirut Country: Lebanon


The project involved the design and execution of a Pile foundation on landfill site to support the main gate entrance structure. The landfill consisted of about 10 m of organic dump (garbage) deposited over natural soil layer of silty marl formation with interlayers of marlstone. The foundation consited of 200 mm OD micropiles to a depth of 15 m. The piles capacity was confirmed by means of a static load test. The works was supervised and confirmed by the consultant.

Micropile Grouting

Micropile Installation

Pullout Load

Micropile Installation

RESIDENTIAL DEVELOPMENT – PLOT 734 ANTELIAS

LEBANON

Client: J.V. Mouawad and Moubarak Project Value: Approx. US $1.0 Million Year Executed: 2005 City: Antelias Country: Lebanon


The project involved the design and execution of a shoring system to support a multi-storey residential building with a large front swimming pool. The shoring system involved the construction of large concrete columns supported on micropiles foundations and laterally supported by two levels of anchors. The soil consisted of lightly cemented sandy formation with with loose blocks of rock mass. The concrete columns were constructed due to the existing height that was not feasible nor economical to reach with construction equipment. The micropiles served both for foundation and lateral support purposes. The face of excavation was covered with structural shotcrete.

Large concrete columns supported by soil anchors

Foundation Micropiles

ALMAZA BREWERY VESSEL TANK EXPANSION

Client: Almaza Brewery sal Project Value: Approx. US $0.75 Million Year Executed: 2006 City: Beirut Country: Lebanon


The Brewery tank extension involved reinforcing of existing structure and foundaton. The foundation reinforcement was carried out by means of installation of cast-in-situ concrete micropiles installed to depths ranging up to 14 m as underpinning of the existing foundation. The structural asects were carried out by means of concrete jacketing of the existing concrete columns in accordance with the additional load requirements. Static load test programme was carried out on the micropiles to ensure the required saftey of design and optimize the piles capacity. An overall of 157 micropiles was installed successfully.

Static Load Test – 80 tons

Micropile Installation – 3m overhead restriction

KABALAN RESIDENTIAL DEVELOPMENT

BEIRUT LEBANON

Client: Kabalan & Sons Project Value: Approx. US $3.0 Million Year Executed: 2005 City: Beirut Country: Lebanon


The project involved the design and execution of shoring system consisting of along one side 600 mm OD piles coupled with multi-levels of anchors and nails with a shotcrete covering a sloped open cut to a depth of 16 m; the opposite side consists of micropiles with multi-level of anchors and nails to a depth of 12 m; adjacent to the building where zero thickness of shorig work onto the property was required, it consisted of underpinning works using injected micropiles coupled with multi-levels of anchors and shotcrete.

Non cohesive Soil

Installation cast-in-situ Piles 600 mm

LONA I – RESIDENTIAL BUILDING

BEIRUT LEBANON

Client: DCC Construction and Development sarl Project Value: Approx. US $3.5 Million Year Executed: 2001 City: Beirut Country: Lebanon


The project involved the design and execution of both Pile foundation and shoring system consisting of 400 mm O.D. cast-in-situ piles coupled with multi-level of strutting. The foundation cnsisted of reinforcing the ground with 400 mm O.D. cast-in-situ piles staggered across the site to meet the load distribition and non-homogeneous soil conditions. The sub-base formation consisted of a part of the site having very loose sand deposit whereas the other part consisted of compact sand considtions. The site shows the pile distribution across the site for foundation purpose.

CFA Installation Procedures

Pile Layout Plan

MILITARY BEACH RESORT PHASE I AND II

KASLIK, LEBANON

Client: Labaki Development and Contracting sarl Project Value: Approx. US $3.5 Million Year Executed: 1999 City: Kaslik Country: Lebanon


The project involved the design and execution of a Pile foundation on reclaimed land near shoreline for an indoor recreational building, indoor swimming pool and a private villa for the commander of the Lebanese army. The reclaimed soil consisted of non-engineered soil backfilled without any quality control. The piles lconsisted of 400 mm OD CFA piles with length varying up to 15 m depth.

Continuous Flight Auger Piles 400 mm OD

Concrete Pumping after Pile Drilling completed

SCHOOL 30 KUWAIT FUND PROGRAM

BEIRUT LEBANON

Client: Abniah sal Project Value: Approx. US $6.0 Million Year Executed: 2005 City: Beirut Country: Lebanon


The project involved the design and execution of shoring system consisting of 400 mm O.D. cast-in-situ piles coupled with multi-level of anchorsm on one side. The other side involved stabilization of sandy soil by means of multi-lvel nails and a shotcrete layer covering the face of excavation. Total depth of excavation reached 14 m over an area of 7,500 m2 of constracution land. The soil consisted of loose silty sand material deposited over a layer of limestone bouldery formation.

Third Floor Lastra Building

Al Midan Street, Dekwaneh, Lebanon Tel / Fax: 961-1-688789/98

Cel: 961-3-693 170

DST GROUP http://www.dstgroup.com/

Lebanon Canada USA

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