CH BR ASIA Southern Transport Development Project, Sri

CASE HISTORY Rev: 00, Issue Data 05.11.2008 SOUTHERN TRANSPORT DEVELOPMENT PROJECT SEETHAWAKA INSDURIAL PARK, AVISSAWELLA, SRI LANKA ENVIRONMENTAL/ GEOTECHNICAL ENGINEERING/ BASAL REINFORCEMENT Product: MacGrid

Problem Southern Transport Development Project (STDP) is Sri Lanka’s first major expressway project with a length of 126km stretching from Colombo to Matara. Part of the project at section JBIC from Dodangoda to Kurundugahahetekma which is under the care of Taisei Corporation, one of the leading construction company from Japan requires construction of embankment over soft foundation soil for a construction period of 130 days. The height of the embakmnet varies from 4m to 10.5m. Soil investigation further shows that the embankment is to be constructed in an acidic environment. Preliminary design analysis shows that the foundation soil could not support the embankment without treatment at the base of the embankment.

Solution Maccaferri proposed MacGrid WG 15 and WG 20, a high strength geogrid with a tensile strength of 150kN/m2 and 200kN/m2 respectively. The geogrid is made from high Before construction Date: Aug 2007 moleculer weight, high tenacity polyester multifilament yarns. The yarns are protected with a polimeric coating making it suitable for acidic soil. The client accepted MacGrid based on the following criteria:

1.0 Low Creep with High Long Terrm Design Strength 2.0 Low Installation Reduction Factor 3.0 Low Durability Reduction Factor 4.0 High Short term Stress Strain Characterictic 5.0 High Pollout Resisitance 6.0 Guaranteed Product Quality

During construction Date: Apr 2008 Client name: ROAD DEVELOPMENT AUTHORITY SRI LANKA Main contractor name: TAISEI CORPORATION, JAPAN Consultant: PACIFIC CONSULTANTS INTERNATIONAL, JAPAN Product used:

382,069 SQUARE METER - WG 20 238,772 SQUARE METER - WG 15 Construction info Construction date: APRIL 2008 Construction end: PRESENT During construction Date: May 2008 Project section Date: Feb 2001

Date: Feb 2001

Maccaferri Asia Unit 511, Block G, Phileo Damansara 1, 46350 Petaling Jaya, Selangor, Malaysia Tel : ( + 60 ) 3 7957 8330—Fax ( + 60 ) 3 7957 9080 E-mail: [email protected] - Web site: www.maccaferri.com CASE HISTORY Rev: 00, Issue Data 01.11.2008 PRACHUABKIRIKHAN BAY RENOVATION KUIBURI DISTRICT, PRACHUABKIRIKHAN PROVINCE, THAILAND ENVIROMENTAL /HYDRAULIC & EROSION CONTROL /SLOPE PROTECTION/ Product: PVC Gabion & PVC Reno Mattress

Problem One of Prachuabkirikhan’s main tourist attarction is the beautiful bay located at the southern part of Thailand. Despite having the lowest rainfalls in Thailand, the shoreline has been severely eroded by the strong sea wave from the Gulf of Thailand. Large cracks were observed on the mian road networks along the shoreline since 2006. Some parts of the road embankment have started to show slip circle failure. Approximately 500m length of the most critical road section was identified by the client which needed immediate attention. The proposed structure must be able to withstand marine condition (salt water environment) and severe atmospheric condition.

Before construction Date: March 2007 Solution Maccaferri was approched by the client to provide the most suitable solution to prevent further deterioration of the shoreline. After careful studies, a 4m high gravity wall using Maccaferri PVC coated gabion and 12m length scour apron using Maccaferri PVC coated Reno Mattress was proposed. It is a simple and durable structure where the gravity wall acts as embankment support and the Reno Mattress and filter fabric at the back of the Reno Mattress prevents erosion. Maccaferri follow a strict specification in order to guarantee for long lasting of the structure against marine and salt water environment and the ageing action of ultraviolet rays and heat. Conrete steps were constructed on top of the gabion box to facilitate beach- goers to get to the beach.

During construction Date: May 2007

Client name: PUBLIC WORKS DEPARTMENT, THAILAND Main contractor name: KUI BURI SERVICES LTD., PART Consultant: PUBLIC WORKS DEPARTMENT, THAILAND Product used: 2,342 NUMBERS - GABION 1,513 NUMBERS - RENO MATTRESS Construction info Construction date: MARCH 2007 Construction end: SEPTEMBER 2007 During construction Date: May 2007 Date: Sept 2007

Project section

Maccaferri Asia Unit 511, Block G, Phileo Damansara 1, 46350 Petaling Jaya, Selangor, Malaysia Tel : ( + 60 ) 3 7957 8330—Fax ( + 60 ) 3 7957 9080 E-mail: [email protected] - Web site: www.maccaferri.com CASE HISTORY Rev: 00, Issue Data 28.11.2003 BLACK MOUNTAIN GOLF COURSE AMPHUR HUAHIN, PRACHUABKHIRIKHAN PROVINCE, THAILAND ENVIRONMENTAL/ HYDRAULIC & EROSION CONTROL/ SLOPE PROTECTION/ Product: Galmac Coated Gabion

Problem The Black Mountain Golf Course is constructed in hilly area of Prachuabkhirikhan province. The main attraction of the golf course includes man made ponds located beside the fairway. A durable retaining wall is required to support the embankment and at the same time the structure must be flexible so that the retaining wall can be constructed as per the proposed aligment of the pond. The structure must also be able to withstand aquatic environment for a long period of time. The most important criteria is that the final look of the completed structure must be pleasant looking and blend with the surrounding landscape.

Before construction Date: April 2008

Solution After considering all the options, finally the client had accepted Maccaferri Gabion Retaining Wall ias the best solution. Not only the gravity wall constructed using gabions are economical and easy to install, it also fulfill all other conditions set by the client. A 2m high wall was constructed around the pond using 2 x 1 x 1 gabion box. The galmac coated wire mesh was proposed to give additional life span to the gabion box in aquatic condition. The other advantage of gabion retaining wall besides aesthetic look is that in some condition, green facing is possible when vegetation starts to grow through the apperature of the wire mesh. During construction Date: June 2008

Client name: THAI NORDIC PROPERTY Main contractor name: THAI NORDIC PROPERTY Consultant: THAI NORDIC PROPERTY Product used: 1,200 NUMBERS - GABION Construction info Construction date: APRIL 2008

Construction end: JULY 2008 During construction Date: July 2008

Date: Sept 2008 CASE HISTORY Rev: 00, Issue Data 28.11.2003 KHA-SAT RIVERBANK PROTECTION TASALA DISTRICT, NAKORNSRITHAMARAT PROVINCE, THAILAND ENVIRONMENTAL/ HYDRAULIC & EROSION CONTROL/ SLOPE PROTECTION/ Product: Galmac Coated Gabion

Problem Kha-sat is a man made water channel with 120 degree curve. The curve of the river causes severe erosion at the river embankment. As water flows, the curve of the river increases with time due to the hydraulic action. The client was looking for a solution to protect the river bank using locally available material to reduce the cost. A durable structure is required considering the velocity of the river at that location and at the same time the structure must be flexible to accomodate the curve of the channel.

Solution Maccaferri proposal of using combination of gabion and reno mattress as erosion protection system was accepted by the client because rocks which are locally available can be used. The design was done by marine department with assistance After construction Date: Aug 2008 from Maccaferri technical team. The structure consist of 4m width Galmac coated Reno Mattress which will be installed at the slope at an angle of 1V:1.5H. The structure also includes 2m height Galmac coated gabion at the toe of the reno mattress as toe protection against scouring. Total length of 300m was improved using this method. Galmac coated wire mesh was proposed to give additional life span to the gabion box in aquatic condition.

Client name: MARINE DEPARTMENT (MD) Main contractor name: MANA-PANIT LIMITED PARTNERSHIP Consultant: NA Product used:

924 CUBIC METER - GABION 2156 SQUARE METER - RENO MATTRESS Construction info Construction date: JANUARY 2008 Construction end: AUGUST 2008 After construction Date: Jan 2008

Date: Sept 2008 CASE HISTORY Rev: 00, Issue Data 01.11.2008 BRIDGE AND RIVERBANK PROTECTION AT KOK RIVER MAELALOS DISTRICT, CHIANGRAI PROVINCE PROVINCE, THAILAND ENVIROMENTAL /HYDRAULIC & EROSION CONTROL /SLOPE PROTECTION/ Product: Gabion & Reno Mattress

Problem A bridge was constructed across 50m width of Kok river at the northern part of Thailand. Strong current from the river could cause severe damage to the bridge if it is not protected properly. The bridge abutment which is located at the river bank must be protected from erosion. The surrounding area at the bottom of the bridge pillar must also be protected to prevent under ground scouring.

Before construction Date: Oct 2007 Solution The Department of Rural Road (DRR) with the assistance from Maccaferri technical team came up with erosion protection system using Maccaferri gabion and reno mattress. The combination of Maccaferri reno mattress and Maccaferri non woven geotextile was installed at the bridge abutment and also along the river bank as erosion protection. Gabion was installed at the toe of the riverbank as toe protection against scouring. Due to the 1V:1.75H slope, a proper securing was provided to the reno mattress to prevent sliding of the structure.

During construction Date: Nov 2007

Client name: DEPARTMENT OF RURAL ROAD (DOR), THAILAND Main contractor name: S.CHIANGRAI CO., LTD. Consultant: NA Product used: 648 CUBIC METER GABION 2828 SQUARE METER RENO MATTRESS Construction info Construction date: OCTOBER 2007 Construction end: JANUARY 2008 During construction Date: Dec 2007 Date: Jan 2008

Project section

Maccaferri Asia Unit 511, Block G, Phileo Damansara 1, 46350 Petaling Jaya, Selangor, Malaysia Tel : ( + 60 ) 3 7957 8330—Fax ( + 60 ) 3 7957 9080 E-mail: [email protected] - Web site: www.maccaferri.com CASE HISTORY Rev: 00, Issue Date : April 16, 2008 ARMOUR ROCK WITH MACTEX GEOTEXTILE CAVITE, PHILIPPINES SHORELINE & OFFSHORE PROTECTION— CAVITE COASTAL ROAD—R1 EXPRESSWAY EXTENSION PROJECT Product: Maccaferri MacTex MXC 90

Problem UEM - MARA, THE No. 14th Mettalurgical Construction Company of China National Nonferrous Metal Industry (MCC), one of the largest engineering and development companies in China, is constructing a 7.0 Kilometer 4.0 lane toll road (R1 Extension), which will extend the ex- isiting Coastal Road (R1 Expressway) from Zapote, Ala- bang to Kawit Cavite.

The embankment slope of the Coastal Road was protected by Armor Rock Protection to resist on Erosion and scouring of the embankment.

The worry of the implementing office, the consultant and the contractor is the potential for bank failure cause by migration and hydraulic leaching of soil particles thru the armor rock protection due to hydrostatic forces.

Solution DURING CONSTRUCTION Taking into consideration the of size of the Armor Rocks During Construction Date : May 2007 (larger than the boulder standard size) to be used, that is directly place on the fabric, the Implementing Office (DPWH), the consultant (Katahira), the contractor (UEM- Mara Philippines Co.) in coordination with Philippine Gabions Inc., agreed that the Maccaferri MacTex MXC 90 is the right filter fabric to eliminate the potential embankment slope failure cause by migration and hydraulic leaching of soil particles thru the armor rock protection due to hydrostatic pressure.

Owner: UE MARA Main contractor name: RON DANIELS CONSTRUCTION Consultant: KATAHIRA

Product used:

150,000 SQUARE METER - MXC 90 geotextile

Construction info: Construction Date : March 2007 Completion Date : November 2008 During Construction Date : Aug 2007 Project Completed Date: December 2007

Near Completion Date: December 2007 Maccaferri Asia Unit 511, Block G, Phileo Damansara 1, 46350 Petaling Jaya, Selangor, Malaysia Tel : ( + 60 ) 3 7957 8330—Fax ( + 60 ) 3 7957 9080 E-mail: [email protected] - Web site: www.maccaferri.com CASE HISTORY Rev: 00, Issue Data 01.11.2008 EROSION PROTECTION AT ROAD NO 5004 BAWAN, MUANG DISTRICT, SONGKLA PROVINCE, THAILAND ENVIROMENTAL /HYDRAULIC & EROSION CONTROL /SLOPE PROTECTION/ Product: PVC Gabion & PVC Reno Mattress

Problem Road No. 5004 which is located next to the Gulf of Thailand has been under constant treat of coastal and marine erosion since 2005. Recently in some locations, up to 70% of the pavement has been seriously damaged by the slow and progressive erosion. The embankment of the road is slowly disappearing with time due to redistribution of sediment by waves. The client, Department of Rural Road was given the task not only to reconstruct the embankment but also to reclaim part of the failed embankment so that the extended area can be used as recreational area. Since it is a rural road, the client was looking for cheaper and simple structure for erosion protection.

Solution The client designed retaining wall using Maccaferri Gabion as gravity wall with the assistance Siam Gabion technical team. The gravity wall was designed to support 3m high Before construction Date: Oct 2006 embankment. Maccaferri Reno Mattress was proposed at the base of the retaining wall and to be extended 4m to the sea as scour protection. Gabion retaining wall was proposed because of its flexible nature, economically viable and simple installation. A 220g/m2 non woven filter fabric was used as filter fabric to prevent erosion of fill material at the back of the gravity wall. The wall was constructed 5m away from the road for recreational purpose. After completion, not only the structure performs well, it was observed that sediment starts to pile up at the foot of the gravity wall.

Client name: DEPARTMENT OF RURAL ROAD, THAILAND Main contractor name: EUNG THONG KEE PART. LTD. Consultant: DEPARTMENT OF RURAL ROAD, THAILAND Product used: 4,600 NUMBERS - GABION 3,800 NUMBERS - RENO MATTRESS Construction info Construction date: OCTOBER 2006 Construction end: NA During construction Date: Oct 2006 Project section

Date: Oct 2006

Maccaferri Asia Unit 511, Block G, Phileo Damansara 1, 46350 Petaling Jaya, Selangor, Malaysia Tel : ( + 60 ) 3 7957 8330—Fax ( + 60 ) 3 7957 9080 E-mail: [email protected] - Web site: www.maccaferri.com CASE HISTORY Rev: 00, Issue Date : January 21, 2008 RIVERBANK PROTECTION BRGY. CALIRAYA, LAGUNA, PHILIPPINES ENVIRONMENTAL / GEOTECTHNICAL / GRAVITY RETAINING WALLS AND SLOPE PROTECTION Product: PVC Coated Gabions, & Non Woven Geotextiles

Problem This tailrace canal serves as water outlet from the Caliraya Lake which is the NAPOCOR in their hydroelectric power plant. This canal also serves as passageway of flood water from different areas to the Pasanjan River.

The existing zinc coated gabions constructed years ago eventually corroded due to the increasing number of local residents who dumped their wastes directly onto the canal. The adverse effect of these water contaminants may have attributed to the increased level of corrosion found on the wires during the inspection.

Immediate rehabilitation was recommended.

Solution The designer , in coordination with the Philippnine Gabions, Inc. Still believed that a gabion gravity wall is still the best solution. This time PVC coated gabion was used to address the Before construction Date: Feb 2001 corrosion before.

The client installation work was awarded to a reputable contractor to ensure the quality in workmanship. The project was finished before the rainy season.

Client name: NATIONAL POWER CORPORATION Main contractor name: MRRM TRADING AND CONSTRUCTION Consultant: NATIONAL POWER CORPORATION

Product used: 1,000 CUBIC METER - PVC COATED GABION 3,000 SQUARE METER - MAC TEX GEOTEXTILE Construction info Construction Date : FEBRUARY 2007 Completion Date : MAY 2007 During construction Date: Feb 2007 Project Completed Date: May 2007

Project sectin Project Completed Date: May 2007 Maccaferri Asia Unit 511, Block G, Phileo Damansara 1, 46350 Petaling Jaya, Selangor, Malaysia Tel : ( + 60 ) 3 7957 8330—Fax ( + 60 ) 3 7957 9080 E-mail: [email protected] - Web site: www.maccaferri.com CASE HISTORY Rev: 00, Issue Date : March 24, 2008 DIDIPIO GOLD - COPPER MINING ROAD ACCESS PROJECT QUIRINO—NUEVA VIZCAYA, PHILIPPINE ENVIRONMENTAL / GEOTECTHNICAL / GRAVITY RETAINING WALLS AND SLOPE PROTECTION Product: PVC & Zinc – Coated Gabions & Non - Woven Geotextiles

Problem OCEANA GOLD Philippines — a reputable mining company, is constructing a 24 kilometer access road to the mining site at Didipio Nueva Vizcaya Philippines. Prior to the construction of the access roads, series of mountains needed to be cut.

Results of the mountain cut sections are slope that were unpro- tected that were prone to failure cause by soil erosion. Some portions of the slope already collapse.

Solution The solution proposed by Philippine Gabions Inc. (PGI) and Infratex Philippines Inc. (IPI) is to use a soil erosion control method for the undisturbed slopes and Maccaferri Gabions for the disturbed / collapsed slopes as toe protection. During Construction Date : March 2007 OCEANA GOLD Philippines - the client, approved to use the Maccaferri Gabions taking into considerations the availability of BEFORE CONSTRUCTION boulders at site, the convenient construction method, the eco- nomic outcome and the long term solution to the problem.

Client name: OCEANA GOLD Philippines Main contractor name: INFRATEX PHILIPPINES INC. Consultant: OCEANA GOLD PHILIPPINES Product used: 1,936 SQUARE METER - GABIONS 4,800 SQUARE METER - MAC TEX GEOTEXTILE Construction info Construction Date APRIL 2007 Completion Date ON GOING During Construction Date : June 2007 Project Completed Date: July 2007

Project Completed Date: August 2007 Maccaferri Asia Unit 511, Block G, Phileo Damansara 1, 46350 Petaling Jaya, Selangor, Malaysia Tel : ( + 60 ) 3 7957 8330—Fax ( + 60 ) 3 7957 9080 E-mail: [email protected] - Web site: www.maccaferri.com CASE HISTORY Rev: 00, Issue Data 01.11.2008 EROSION PROTECTION FOR TRASMISSION TOWER LAMPANG PROVINCE, THAILAND ENVIROMENTAL / GEOTECHNICAL / GRAVITY RETAINING WALL / SLOPE PROTECTION Product: PVC Coated Gabion & MacTex

Problem High voltage power transmission tower was constructed at flood risk area in Lampong District, Thailand. A 2m high flood control embankment with an area of 25 length and 25m width was constructed to protect the foot of the transmission tower. During monsoon season, flash flood occurs resulting in severe erosion at the surface of the embankment. Further erosion could expose the tower foundation, thereby weakening the tower leg. Underground seepage is also a main treat to the structure due to the high water table at the area. After inspection, three towers were identified for immediate protection.

During construction Date: June 2007 Solution A solution using combination of gabion retaining wall and filter fabric was proposed by Maccaferri technical team. The proposal includes;

1.0 Gabion gravity wall with front steps retain 5m high embankment as retaining structure and at the same time protects the embankmnet against strong water current during flood. 2.0 Filter fabric was used at the back of the retaining wall to prevent erosion. 3.0 An embedment depth of 3m using gabion gravity wall was constructed to protect the concrete foundation.

The client favoured the proposal compared to other erosion prevention methid because of its simple construction method and also economical. In addition, locally available boulders made the construction period shorter. The rate of construction During construction Date: July 2007 is estimated at 25 cubic meter per man per day.

Client name: ELECTRICITY GENERATING AUTHORITY,THAILAND Main contractor name: SILA MAE TA LTD., PART. Consultant: NA Product used: 3,921 CUBIC METER - GABION Construction info Construction date: JUNE 2007 Construction end: DECEMBER 2007 During construction Date: July 2007 After construction Date: Dec 2007

Date: Dec 2007

Project section

Maccaferri Asia Unit 511, Block G, Phileo Damansara 1, 46350 Petaling Jaya, Selangor, Malaysia Tel : ( + 60 ) 3 7957 8330—Fax ( + 60 ) 3 7957 9080 E-mail: [email protected] - Web site: www.maccaferri.com CASE HISTORY Rev: 001, Issue Date : October 2007 THE CASITAS CANYON RANCH CARMONA, CAVITE, PHILIPPINE ENVIRONMENTAL / GEOTECHNICAL / SOIL REINFORCEMENT RETAINING WALLS / SLOPE PROTECTION Product: Green Terramesh, MacGrids & MacTex

Problem A 6m meter retaining wall between the Casitas (small house) has been designed to separate the upper and lower houses. Using a retaining wall with blocks as fascia is not very ideal as far as the engineers and architect are concerned . A green finish is pre- ferred since they will use this area as a showcase in promoting the canyon Ranch Subdivision.

Halfway through the installation, the engineers decided to in- crease the height of the structure by 3 meter hence , additional reinforcements need to be considered.

Solution The engineers of Century Communities Corporation finally accepted Philippine Gabions Inc. proposal using Green Ter- ramesh System for the first 6 meters reinforcement and Mac- Grids for the additional 3 meters reinforcement. The fascia will be hydro seeded to create green finish. Before construction Date: June 2007

The proposed system achieved the aesthetic finish the owner BEFORE CONSTRUCTION wanted and the durability has not been compromised. A Philip- pine Gabions Inc. design engineer supervised the installation to ensure that the soil was compacted according to require- ments during construction. .

Client name: CENTURY COMMUNITIES CORPORATION Main contractor name: CENTURY COMMUNITIES CORPORATION Consultant: NA Product used: 1,755 SQUARE METER - GREEN TERRAMESH 878 SQUARE METER - MAC GRID 10,260 SQUARE METER - MAC TEX GEOTEXTILE Construction info Construction Date : JUNE 2007 Completion Date : OCTOBER 2007 During construction Date: June 2007 Project Completed Date: October 2007

Project section

Maccaferri Asia Unit 511, Block G, Phileo Damansara 1, 46350 Petaling Jaya, Selangor, Malaysia Tel : ( + 60 ) 3 7957 8330—Fax ( + 60 ) 3 7957 9080 E-mail: [email protected] - Web site: www.maccaferri.com CASE HISTORY Rev: 00, Issue Date : January 29, 2008 PHASE V BUILDING EXPANSION - TEXAS INSTRUMENTS TIPI COMPOUND, PEZA, LOAKAN ROAD BAGUIO CITY PHILIPPINES ENVIRONMENTAL / GEOTECTHNICAL / GRAVITY RETAINING WALLS / SOIL REINFORCEMENT AND SLOPE PROTECTION Product: System Terramesh / Terramesh Panel / Gabions / Non - Woven Geotextiles

Problem The construction of Texas Instrument Phase V Building Ex- pansion Project was faced with major slope protection problems. At the crane way area, the main soil reinforcement used on this location is soil nailing. The absence of a suitable facing caused the slope to start collapsing especially when the rain started pouring in constantly. Initial remedy using sand bags and blue sheets to cover the slope was adopted by the contractor but the collapse was inevitable.

Solution Taking into consideration the weather at the site and the schedule to complete the whole project, the Contractor (CCT Toyo ), the consultant (TCGI Philippines), in coordination with Philippine Gabions Inc., agreed that the Maccaferri Gabions and Maccaferri System Terramesh are the best solution to use as secondary reinforcement on the Crane Area location. PGI helped the contactor in the accreditation Before Construction Date : November 2007 process of a reputable subcontractor to do the installation. A well experienced project engineer was assigned at the site to do the supervision during the installation period. The construction was finished within 2 months, in time for the turn- over of the facility to the owners.

Client name TEXAS INSTRUMENTS Main contractor name CCT—TOYO Consultant TCGI PHILIPPINES Product used

269 CUBIC METRE - GABIONS 998 SQUARE METER - SYSTEM TERRAMESH 10,400 SQUARE METER - MACTEX Construction info Construction Date : November 2007 Completion Date : December 2007 Before Construction Date : November 2007 During Construction Date: November 2007

PHASE 4

Project Section

Project Completed Date: December 2007 Maccaferri Asia Unit 511, Block G, Phileo Damansara 1, 46350 Petaling Jaya, Selangor, Malaysia Tel : ( + 60 ) 3 7957 8330—Fax ( + 60 ) 3 7957 9080 E-mail: [email protected] - Web site: www.maccaferri.com CASE HISTORY Rev: 00, Issue Data 28.11.2003 ROCKFALL PROTECTION BUMIPOL DAM, TAK PROVINCE, THAILAND ENVIROMENTAL /ROCKFALL PROTECTION SYSTEM Product: Rockfall Netting

Problem Bumipol dam is Thailand’s largest dam located at the northern part of Thailand and was constructed in 1964 mainly to control flood and generate electricity power. The dam is located very close to mountains and hilly areas which mostly are made up of Hornfel and Gneiss types of rocks. Due to the height (30m to 50m) and steepness of the slope (80 degree), any falling debris or rocks can cause severe damage to the spillway of the concrete dam. Since the whole slope is stable in terms of global stability, the client was looking for a simple and effective method to control the debris and falling rocks.

Solution Macacferri proposed simple drapery system as the most effective and economical solution to protect the dam from falling rocks. It consist of double twist hexagonal mesh with During construction Date: Sept 2008 fixed anchorage at the top and removable anchorage at the bottom to facilitate during the maintenance. Maccaferri Macro 2 inhouse software was used to calculate the safety factor of the mesh. The net will be secured to the slope using rockbolt at 4m x 4m spacing and 50cm depth. EGAT accepted the proposal based on the following advantages:

1.0 Effective and Simple Installation Method 2.0 Permenant Solution 3.0 Guaranteed Quality of The Product

Client name: ELECTRICITY GENERATING AUTHORITY (EGAT) Main contractor name: KENBER GEOTECHNICS CO., LTD. Consultant: ELECTRICITY GENERATING AUTHORITY (EGAT) Product used: 4,700 SQUARE METERS OF DOUBLE TWIST MESH Construction info Construction date: SEPTEMBER 2008 Construction end: OCTOBER 2008 During construction Date: Sept 2008 Project section

Date: Oct 2008

Maccaferri Asia Unit 511, Block G, Phileo Damansara 1, 46350 Petaling Jaya, Selangor, Malaysia Tel : ( + 60 ) 3 7957 8330—Fax ( + 60 ) 3 7957 9080 E-mail: [email protected] - Web site: www.maccaferri.com CASE HISTORY Rev: 00, Issue Date : April 2, 2008 ROCKFALL PROTECTION WITH NETTINGS NORZAGARAY, BULACAN, PHILIPPINES ENVIRONMENTAL / ROCKFALL PROTECTION / SIMPLE DRAPERY SYSTEM Product: Maccaferri Rockfall Protections System (MAC.RO) PVC Coated Rock Fall Net

Problem Holcim Philippines, the country’s leading cement manu- facturer, experienced rock fall problems in one of their cement plants in Bulacan. One of their conveyor was hit by falling rocks which resulted delay in production and a very costly repair. The initial solution was to use shot crete with rock nailing. However, due to high material and installation cost, the owners opted to look for alternative solution which’s more economical and can be installed during rain or shine.

Solution The solution proposed by Philippine Gabions, Inc. in coordination with the General Contractor was to use Rock- fall Net as drapery system to prevent rocks from falling Before construction Date: October 2006 down onto their conveyor. The owners approved the contractor’s proposal because their problems were ad- dressed within the workable budget and a limited time. The installer completed 150 linear meter in 15 days. Several other areas were also considered for protection using similar system after proven to be effective in the first phase.

Owner: HOLCIM PHILIPPINES Main contractor name: PEARL AND JADE CONSTRUCTION Consultant: HOLCIM PHILIPPINES

Product used: 12,975 square meter - PVC Coated Rockfall Net Construction info:

Construction Date : NOVEMBER 2006 Completion Date : NOVEMBER 2007 During construction Date: December 2006 Project Completed Date: November 2007

Project Completed Date: November 2007 Maccaferri Asia Unit 511, Block G, Phileo Damansara 1, 46350 Petaling Jaya, Selangor, Malaysia Tel : ( + 60 ) 3 7957 8330—Fax ( + 60 ) 3 7957 9080 E-mail: [email protected] - Web site: www.maccaferri.com CASE HISTORY Rev: 00, Issue Date : March 24, 2008 DIDIPIO GOLD - COPPER MINING ROAD ACCESS PROJECT QUIRINO—NUEVA VIZCAYA, PHILIPPINE ENVIRONMENTAL / GEOTECTHNICAL / SOIL EROSION PROTECTION Product: Biodegradable Erosion ControlMatting BIOMAC

Results of the mountain cut sections are slope that were unpro- tected that were prone to failure cause by soil erosion.

Solution The solution proposed by Philippine Gabions Inc. (PGI) and Infratex Philippines Inc. (IPI) and agreed by the OCEANA GOLD Philippines is to use a Biodegradable Erosion Control Matting BIOMAC for slopes that are below 5 meter vertical height with a slope of equal or less than 45 degrees on the During Construction Date : July 2007 vertical. . BIOMAC is designed specifically for the preventation of slope erosion and when properly seeded will assist in the propaga- tion of new growth in areas subject to occasional flows. BIO- MAC reduces erosion and downward migration of slope soil when installed properly. BIOMAC will decompose with time fertilizing the soil and expediting richer vegetation growth.

Client name: OCEANA GOLD PHILIPPINES Main contractor name: INFRATEX PHILIPPINES INC. Consultant: OCEANA GOLD PHILIPPINES Product used: 100,000 SQUARE METER - BIOMAC Construction info Construction Date JULY 2007

Completion Date NOVEMBER 2007 During Construction Date : July 2007 Project Completed Date: November 2007

Project Completed Date: November 2007

Maccaferri Asia Unit 511, Block G, Phileo Damansara 1, 46350 Petaling Jaya, Selangor, Malaysia Tel : ( + 60 ) 3 7957 8330—Fax ( + 60 ) 3 7957 9080 E-mail: [email protected] - Web site: www.maccaferri.com CASE HISTORY Rev: 00, Issue Date : October 17, 2007 DIDIPIO GOLD - COPPER MINING ROAD ACCESS PROJECT QUIRINO—NUEVA VIZCAYA, PHILIPPINE ENVIRONMENTAL / GEOTECTHNICAL / SOIL EROSION PROTECTION Product: Enkamat 7018

Results of the mountain cut sections were slope that were un- protected that were prone to failure cause by soil erosion.

Solution The solution proposed by Philippine Gabions Inc. (PGI), In- fratex Philippines Inc. (IPI), and agreed by the OCEANA GOLD Philippines to use Soil Erosion Control ENKAMAT 7018 for slopes that are above 5 meter vertical height with a slope of equal or greater than 45 degrees on the vertical. . ENKAMAT 7018 is a proven, lightweight, flexible alternative to Before Construction Date : April 2007 rigid concrete, asphalt and stone riprap systems for controlling BEFORE CONSTRUCTION erosion. . It is designed to help nature develop strong vegeta- CONSTRUCTION tion for permanent erosion protection of slopes, rivers, banks, ditches, channels, spillways, landfills, shorelines, and other vulnerable erosion-prone areas.

Client name: OCEANA GOLD Philippines

Main contractor name: INFRATEX PHILIPPINES INC.

Consultant: OCEAN GOLD PHILIPPINE Product used: 35,520 SQUARE METER - ENKAMAT 7018

Construction info Construction Date JULY 2007 Completion Date NOVEMBER 2007 During Construction Date : July 2007 Project Completed Date: November 2007

Project Completed Date: November 2007 Maccaferri Asia Unit 511, Block G, Phileo Damansara 1, 46350 Petaling Jaya, Selangor, Malaysia Tel : ( + 60 ) 3 7957 8330—Fax ( + 60 ) 3 7957 9080 E-mail: [email protected] - Web site: www.maccaferri.com CASE HISTORY Rev: 00, Issue Data 01.11.2008 SLOPE SURFACE PROTECTION AT LE ORCHID VILLAS PATONG DISTRICT, PHUKET PROVINCE, THAILAND ENVIROMENTAL /GEOTECHNICAL / SOIL EROSION PROTECTION Product: Enkamat 7018

Problem The management of Le Orchid Villas planned to build luxury villas at the foot of hilly forest near the famous Patong beach in Phuket. The location of the proposed villas is very close to hill side which requires the existing hill to be trimmed to almost 60 degree inclination. The slope was cut approximately 22m in height and 120m length to make way for the construction of the villas. The global stability of the slope is not the main concern to the client because the bare slope consist of mainly granite rock, but the slope is exposed to surface erosion if it is not protected immediately. Shotcreting the surface is not an options because the cient was also looking for green finish which will look more pleasent and blends with the sorrounding environment.

Before construction Date: July 2006 Solution Maccaferri proposed Enkamat 7018, a three-dimensional permanent erosion control mat. It is made of thick polyamide filament with 90% void for soil filling. Enkamat was a prefered choice because of the follwoing advantages:

1.0 Green finishing 2.0 Permeable material 3.0 Economical solution 4.0 Permanent solution 5.0 Simple installation method with minimum supervision 6.0 Guaranteed quality of the material

After construction Date: May 2007

Client name: LE ORCHID RESIDENCE, THAILAND Main contractor name: KENBER GEOTECHNICS CO, LTD. Consultant: NA Product used: 1,800 SQUARE METER ENKAMAT 7018 Construction info Construction date: MAY 2007 Construction end: MAY 2007 After construction Date: May 2007 Project section

Date: May 2007