Municipality Of Mankayan, Benguet Tender

Description Republic Of The Philippines Cordillera Administrative Region Province Of Benguet Municipality Of Mankayan Project Name : Geotechnical Investigation (soil Testing, Exploration, Etc.) At Barangay Poblacion Location : Mankayan, Benguet (various Barangays) Contract Duration : 30 Calendar Days Approved Budget For The Contract (abc) : Php 270,000.00 Source Of Fund : Saip No. 06 Mode Of Procurement : Public Bidding Terms Of Reference Geotechnical Investigation (soil Testing, Exploration, Etc.) (various Site Location) I. Introduction A. Background The Local Government Unit Of Mankayan Is Embarking On The Implementation Of Multiple Vertical Infrastructure Projects, Including Public Buildings, Healthcare Facilities, And Commercial Centers. These Projects Are Integral To Supporting Community Development, Improving Public Services, And Promoting Economic Growth Within The Municipality. Given The Diverse Nature Of These Projects, It Is Crucial To Guarantee That The Proposed Structures Are Designed And Constructed To Meet Safety, Durability, And Sustainability Standards. The Success Of These Projects Relies Heavily On The Stability And Suitability Of The Underlying Soil And Subsurface Conditions. As Such, A Comprehensive Geotechnical Investigation Is Essential To Provide The Data And Analysis Necessary For Informed Decision-making During The Design And Construction Phases. The Geotechnical Investigation Aims To Evaluate The Physical, Chemical, And Mechanical Properties Of The Subsurface Materials At Each Project Site. This Assessment Will Identify Potential Geotechnical Challenges, Such As Soil Instability, Low Bearing Capacity, High Groundwater Tables, Or The Presence Of Expansive Or Liquefiable Soils, Which Could Impact The Structural Integrity Of The Proposed Buildings. Furthermore, The Investigation Will Ensure Compliance With Local Building Codes And Regulatory Requirements While Optimizing Design Solutions To Balance Safety, Performance, And Cost-efficiency. B. Objectives 1. To Determine The Soil Bearing Capacity To Guide Foundation Design. 2. To Evaluate Soil Composition And Its Properties To Be Able To Assess Soil Stability. 3. To Analyze The Data Obtained And Give Engineering Consideration And Recommendation On The Selection And Design Of Foundation. 4. To Address Seismic Considerations. 5. To Ensure Regulatory Compliance And Standards. 6. To Support Cost-effective Design. C. Scope Of Work The Proposed Projects Are The Subject Of Subsurface Soil Exploration Work Including Geotechnical Report. Name Of Project And Location Number Of Bored Hole Mankayan Public Market, Poblacion 6 Poblacion Barangay Hall, Poblacion 3 Ii. Scope Of Services A. General 1. The Consultant Shall Be Responsible For Carrying Out The Necessary Subsurface Soil Exploration Works In Respect To The Project Stated. 2. After The Issuance And Receipt Of Notice To Proceed (ntp), The Consultant Shall Coordinate With The Municipal Engineering Office To Identify The Site Of The Project. 3. Upon Completion Of The Subsurface Exploration Work Activities, The Consultant Shall Submit Their Final Report Containing Geotechnical/ Geological Reports To The Municipality. 4. All Damages Incurred By The Project Shall Be Restored By The Contractor. 5. The Consultant Shall Be Responsible For The Reliability Of The Work Presented. B. The Service 1. Subsurface Soil Exploration Works A. Location The Consultant Shall Coordinate With The Municipal Engineering Office Before The Conduct Of Subsurface Soil Exploration Works For Proper Identifying The Location Of The Projects. B. Scope Of The Project The Consultant Shall Provide All The Labor, Instrument/ Equipment Materials And Supplies, Vehicles, Bunkhouses, Etc., Necessary To Perform Satisfactorily The Subsurface Exploration Herein Required, Viz: I. Drilling And Sampling Ii. Standard Penetration Test (spt) Iii. Water Level Measurements Iv. Laboratory Testing And Analysis V. Preparation And Submission Of Reports The Consultant Shall Be Held Solely Responsible For The Result Of This Boring/ Drilling Exploration And Other Activities Under The Terms Of Reference (tor). C. Detailes Exploration Requirements/ Specifications Drilling And Sampling 1. Location And Number All Boreholes At The Specified Location Should Be Shown On The Plans. Include Coordinates. 2. Depths Of Borings Shall Be Equal To 15 Meters Or Extend If Necessary, Depending On The Soil Classification. 3. Procedure In Sand, Clay, And Slit Materials, The Boreholes Shall Be Advanced By The Wash Boring Method In Between Sampling Sections Using Side Discharged Chopping Bits. Whenever Necessary, “n”-size Casings Shall Be Utilized. The Washed Section Shall Be Cleaned Thoroughly Before Each Sampling Run, Ensuring That The Underlying Soil Is Not Disturbed. Sampling Shall Be Done At One Meter Interval From The Riverbed To Hard Strata Using 50 Cm Split Spoon Sampler. In A Soft Cohesive Layer, Disturbed Sample Using Thin-walled Tube Samplers Shall Be Obtained Hydraulically. Core Drilling Shall Be Carried Out By A Diamond Rotary Drill Method In Gravely On Rock Formation. Core Samples Shall Be Undertaken Wherever Solid Information Is Encountered. D. Equipment 1. Drilling Machine The Consultant Shall Utilize At Least Two (2) Drilling Machine And Set Them Up At The Project Site. The Drilling Machine Shall Be In Good Working Condition And Shall Be Of Such Capacity As To Maintain Satisfactory Progress Of Work. 2. Bits The Consultant Shall Have An Example Supply Of Different Types Of Bits To Adapt To Varying Conditions. Bottom Discharge And Stepped Bits Shall Also Be Available. 3. Core Barrels Double Tube Swivel Type Core Barrels In Good Condition And Obtaining Maximum Core Recovery Shall Be Used. 4. Casing The Consultant Shall, At His Own Expense And Responsibility, Provide Casings As Required To Ensure The Stability Of The Borehole Walls. The Casings Shall Be At Least Of N-size And Shall Be In Good Condition. After A Hole Has Beed Finished, The Casings Shall Be Retrieved. E. Handling And Core Samples The Consultant Shall Provide All The Materials, Equipment, And Labor Necessary For Preserving Samples. F. Standard Penetration Test (spt) The Test Shall Be Carried Out Through Ordinary Soil Encountered To The Depths Specified Above. Standard Penetration Test Shall Be Performed Using 5.0 Cm (2.0 In.) Outside Diameter Split Spoon Sampler, Driven By A 63.6 Kgs (140 Lbs.) Hammer Falling 76.0 Cm (30 In.) At 1.50 Mts Interval Or Closer If Necessary. G. Water Level Measurement The Water Level Shall Be Measured Daily (before And After) Whenever Encountered In A Borehole. H. Laboratory Testing Analysis The Preparation Of Samples For Testing Shall Be Made In Accordance With Aashto. The Following Test Shall Be Made On Samples Obtained From Boring And Drilling. 1. Split – Spoon Analysis I. Visual Soil Description Ii. Mechanical Analysis, Aashto Designation T88 Iii. Liquid Limit, Plastic Limit And Plasticity Index, Aashto Designation T89 And T90 Iv. Group Index And Soil Classification, Use Unified Soil Classification C. Report Outputs/ Deliverables 1. Final Output The Consultant Shall Prepare The Final Report Containing Geological/ Geotechnical Reports And Analysis In Five (5) Bound Copies In The Form And Substance To Be Submitted To The Local Government Of Mankayan – Engineering Office Together With The Detailed Engineering Plans, Thirty (30) Days From The Commencement Of Work And/ Or At The Termination Of The Contract. The Final Report Shall Not Be Limited To The Following: A. Field Investigation And Methodology B. Borehole Drilling And Sampling C. Laboratory Testing D. Final Boring Logs (bl) E. Final Laboratory Test Results (fltr) F. Borehole Location Plan G. Soil Profile Along Structures Showing Boring/ Drilling Logs H. Soil Liquefactions Investigation Report I. Soil Bearing Capacity J. Detailed Discussion Of The Result Of Geological/ Geotechnical Investigation And Laboratory Testing K. Recommendation (foundation Type And Required Geotechnical Parameter For Design) Other Data To Be Submitted By The Consultant Along With The Final Report Are The Following: Boring Logs A. Job, Boring, Hole Number, Date, Time, Boring/drilling, Foreman, Supervisor B. Weather Condition C. Depth Of Boring At Start Of The Day D. Method Of Penetration And Flushing System E. Description Of Soil Strata Encountered F. Depth Of Soil Boundaries G. Size, Types And Depth Of Samples And Sample Number H. Type And Depth Of In – Situ Test I. Standard Penetration Test Resistance, “n” Value J. Recovery Ratios Of Samples K. Detailed Notes On Boring/ Drilling Procedure, Casing Sizes And Resistance To Driving, Description Of Wash Water Or Spoil From Boring/ Drilling Tools L. Depth Of Boring At End Of The Day M. Other Relevant Information Such As Rqd, Percent Core Recovery, Andle Of Fiction, Etc. Photographs Photographs Showing The Borehole Drilling And Sampling At Each Proposed Sites Shall Be Taken By The Consultant And Incorporated In The Report. Photographs Shall Be Taken At Each Borehole Location Depicting The Following: A. Equipment Used B. Core Drilling Operation C. Water Level Measurements D. Performance Of Spt And Shelby Tube Samples E. All Cores In The Core Boxes, Spt And Shelby Tube Samples F. Date Photographs Was Taken. Note: Photographs Will Be Printed As A Part Of The Final Report. Produce Another Set Of Photographs In 3r Size. Iii. Implementation A. Key Experts’ Qualification And Requirements The Following Experts/ Professionals And Their Member Shall Be Required To Carry Out The Consulting Services For The Projects And Should Have Appropriate Educational Degree, Relevant Training And Adequate Years Of Experience In The Conduct Of Sub-surface Soil Exploration. Position/ Key Staff Number Of Staff Detailed Tasks/ Responsibilities Required Qualifications Team Leader 1 • Overall Guidance, Direction, Supervision And Coordination Of Members Of The Team • Study And Determination Of Items And Method Of Soil Investigation And Laboratory Test • Perform Necessary Subsoil Investigations On Representative Sections Of The Road With Samples To Be Taken At Suitable Intervals • Investigate The Physical Properties Of Materials To Facilitate The Design Of Structures • Bs In Civil Engineering; Ms Or Doctoral Degree Is An Added Advantage • Duly Licensed/ Registered Civil Engineer • At Least 10-year Experience On Soil, Sub-surface And Geotechnical Survey And Study Of Structures, Roads And Bridges The Consultant Shall Provide Technical And Administrative Support Staff As May Require. B. Contract Period The Consultant’s Contract Period For Undertaking The Detailed Engineering Design And Final Report Shall Be Thirty (30) Calendar Days And The Consultant Shall Commence Work After Receipt Of Notice To Proceed. C. Assistance To Be Provided By The Client The Lgu Of Mankayan Shall Ensure That The Consultant Has Access To All Relevant Information Necessary To The Performance Of The Above Services. The Consultant Is Expected To Provide Office Space And Equipment And All Other Resources For Completing The Service. Prepared By: Recommending Approval: Mharidion L. Gas-ing Jonathan S. Casaldo Architect I Municipal Engineer Approved: Hon. Dario S. Banario Municipal Mayor Schedule Of Bac Activities As Follows: February 13, 2025 Last Submission Of Letter Of Intent And Purchase Of Bid Docs(5:00pm) February 26, 2025 Dropping Of Bids, (08:00am-09:30am) At Municipal Library February 26, 2025 Opening Of Bids, (10:00am) At Municipal Library A Complete Set Of Bid Documents May Be Acquired From The Bac, Mankayan, Benguet Upon Payment Of Non-refundable Fee Corresponding To The Amount Of The Contract. Prepared By: Digno M. Valentin Mbac-chairman