December 22, 2016 no comments

Geotechnical Assessment for the Cavite-Laguna Expressway

Scope: Geotechnical Assessment
Client: DCCD Engineering Corporation
Location: Cavite-Laguna Expressway (Cavite Section)

DCCD Engineering Corporation engaged AMH to conduct geotechnical engineering assessment for the proposed Cavite-Laguna Expressway (CALAX) – Cavite section. The results of the subsurface investigation for the expressway, ramp, and interchange bridges of the alignment section were evaluated. Soil liquefaction and deep foundation analysis were then carried out for this study. Axial pile capacities were calculated using semi-empirical soil mechanics approach, consistent with the procedures described in the American Association of State Highways and Transportation Officials (AASHTO) 2002. For lateral analysis, a finite-difference method to model soil-structure interaction was adopted.

Flood Study and Geotechnical Assessment for the Proposed MRT-7

Scope: Hydrologic Study and Geotechnical Assessment
Client: EEI Corporation / Geotechnics Philippines, Inc.
Location: Quezon City to San Jose del Monte, Bulacan

Manila Metro Rail Transit Line 7 (MRT-7) is a 22.8 kilometer rapid transit line consisting of 14 stations, with the line runs in the northeast direction from Quezon City to San Jose Del Monte, Bulacan. EEI Corporation commissioned AMH to quantify the flood risk on selected stations by the generation of inundation maps within selected sections. Eight (8) flood-prone areas are included in the study which is currently ongoing. The engagement involves synthesis of data collected from known government agencies (e.g. DPWH, NAMRIA, PAGASA, DOST), hydrologic modelling and hydraulic analysis for each area. Flood levels are identified and localized inundation maps are prepared to serve as inputs for EEI in determining any required intervention to the elevations of at-grade stations or design of pump stations for depressed sections.

AMH also assisted Geotechnics Philippines, Inc. (GPI) in the geotechnical evaluation of the project site. AMH assessed 149 boreholes which were drilled to provide the necessary samples for the study. All results will serve as input in future detailed engineering designs for structures to be erected along the MRT 7 alignment.

Detailed Engineering Design for MNTC SCTEx High Risk Slopes

Scope: Detailed Structural Design
Client: Manila North Tollways Corporation
Location: Subic-Clark-Tarlac Expressway

AMH was previously engaged by Manila North Tollways Corporation in 2011 and in 2015 to perform a detailed inspection and inventory of critical slopes along the alignment of the Subic‐Clark‐Tarlac Expressway (SCTEx). Based on the results of the assessments, AMH was able to identify eight (8) high risk areas among the thirty three (33) sites along the stretch of the expressway.

MNTC engaged AMH once again to conduct and provide geodetic survey, geotechnical and geologic services, hydrologic study and drainage design, project cost estimates, and technical specifications on the mentioned high risk areas along the alignment of SCTEx.

Geotechnical Assessment for the PNR-NSCR

Scope: Geotechnical Assessment
Client: Geotechnics Philippines, Inc.
Location: Bulacan to Manila

Geotechnics Philippines, Inc. (GPI) engaged AMH to undertake geotechnical engineering consultancy services in connection with the Proposed North-South Commuter Railway of the Philippine National Railways (PNR-NSCR Project). The proposed project will be implemented by the Department of Transportation and Communication (DOTC) and funded by the Japan International Cooperation Agency (JICA). The project aims to provide a high standard mass transport system from Bulacan to Manila. Ten (10) stations will be mostly initially constructed and five (5) additional stations are envisioned in the future.

The geotechnical report included geotechnical evaluation of four hundred eighty five (485) boreholes along the alignment. Liquefaction potential was analysed for this study, using peak ground acceleration (PGA) or 0.5g. Safe bearing pressures at 1.5m depth and estimated settlements due to consolidation were calculated for the embankment areas. For the evaluation of deep foundation system using bored piles, pile lengths were determined based on the location of the competent layer and embedded at least 3m below hard soil or rock layer.

Pueblo De Panay Crusher Bridge Design Project

Scope: Detailed Structural Design
Client: SHJ Development Corporation
Location: Roxas City, Capiz

The Crusher Bridge is the second of several bridges to be designed within the planned 180 hectare Pueblo de Panay development in Roxas City, Capiz of SHJ Devt. Corp., with the first bridge contracted to AMH in 2007. This proposed RCDG bridge will cross the upstream and shallower portion of the Panay River. As the design consultant, AMH services included bridge hydraulic analysis and design to determine optimum bridge opening, scour analysis (as necessary) and structural design of superstructure and substructure systems.

Integrated Luzon Highway Project

Scope: Geotechnical and Geologic Assessment
Client: SPACEM Consultants
Location: Luzon (San Fernando, La Union - Manila - Legazpi - Matnog; Tarlac - Tuguegarao)

This project of the Philippine government under its Public - Private Partnership program is tagged to be an ambitious undertaking, one that will revitalize the island’s crosscountry public transport system, running from Cagayan Valley to Sorsogon, with branches from Tarlac to Nueva Ecija. As part of the Transaction Advisory Consultants, AMH undertook the geologic, geohazard and geotechnical assessment of the alignment of the entire railway project.