inception report package no.37 kma

7/28/2019 Inception Report Package No.37 KMA

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INCEPTION REPORT

Contract No: BP-661-DSD-37-068/69


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Table of Contents

List of Acronyms ...................................................................................................................................................... 4

List of Tables .............................................................................................................................................................. 5

SECTION I: INTRODUCTION............................................................................................................................... 6

1.1 Background.................................................................................................................................................... 6

1.2 Project Description ....................................................................................................................................... 6

1.3 Project Consulting Services ........................................................................................................................ 6

1.4 Reporting........................................................................................................................................................ 6

1.5 Purpose and Structure of Inception Report .............................................................................................. 7

SECTION II: PROJECT REVIEW CONDUCTED .............................................................................................. 8

2.1 Desk Study .................................................................................................................................................... 8

2.2 Meeting, Discussion and Field Reconnaissance ..................................................................................... 9

2.3 Observation from Review .......................................................................................................................... 10

2.4 Methodology of project work ..................................................................................................................... 11

SECTION III: CONSULTING SERVICES.......................................................................................................... 13

3.1 Design Consultants: ................................................................................................................................... 13

3.2 Mobilization of Consultants: ...................................................................................................................... 13

3.3 Objectives: ................................................................................................................................................... 13

3.4 Scope of Works:.......................................................................................................................................... 13

3.4.1 Desk study: .......................................................................................................................... 13

3.4.2 Feasibility Study ................................................................................................................... 13

3.4.3 Preliminary Design of Bridges: ............................................................................................. 15

3.4.4 Analysis of Data, Conclusion and Recommendation of Design Parameters. ............................ 16

3.4.5 Miscellaneous ...................................................................................................................................... 16

3.4.6 Detailed Design and Quantity/Cost Estimates ................................................................................ 17

3.4.7 Use of Standard Design(s): ............................................................................................................... 17


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3.5 Work Schedule:........................................................................................................................................... 17

3.6 Staffing Schedule........................................................................................................................................ 17

SECTION IV: CONCLUSION AND RECOMMENDATION............................................................................. 18

ANNEXES .............................................................................................................................................................. 20

Annex A: Work Schedule ..................................................................................................................................... 21

Annex B: Staffing Schedule ................................................................................................................................. 22

Annex C: Letter from DDC ................................................................................................................................... 23

Annex D: Bridge Wise Detail Discussion.............................................................. Error! Bookmark not defined

Annex E: Data on location of bridge site.............................................................................................. 24

Annex F: Location of bridge site on transportation map. ....................................................................... 26

Annex G: Location of bridges site from Google maps .......................................................................... 27


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List of Acronyms

DDC : District Development Committee

DoLIDAR : Department of Local Infrastructure Development and Agriculture Road

DOR : Department of Road

DTO : District Technical Office

ToR : Term of Reference

VDC : Village Development Committee


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List of Tables

Table 2.1 Status of Bridge Sites

Table 2.2 Important Issue of Bridge sites.

Table 2.3 Task Series and Task Flow

Table: 4.1 approximate length and type of bridge recommended.


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SECTION I: INTRODUCTION

1.1 Background

Thecontract agreement signed between the Department of Road (DOR), Bridge Project and Nepalconsult (P

Ltd and PEES Consultant JV authorized the JV to carry out the detailed Design of Bridges under Package 37.

As called for in the Terms of Reference, the Consultant is to prepare and submit the Inception Repor

highlighting the field reconnaissance survey carried out including consultant's programme to undertake the

proposed consultancy assignment and the tentative input of the experts for achieving the target goal.

Accordingly the consultant, having completed the field reconnaissance and prepared an inception report to hi-

light the tasks carried out in the field and to describe the site situation including the preliminary site details and

other requirements of the inception reporting.

1.2 Project Description

The Government of Nepal in order to improve the transport system of the country proposed to prepare a

Detailed Project Report for the construction of Bridges in the remote areas of the country. In the course of

preparing the DPR, the Department of Roads, Bridge Project intends to utilize the services of experienced

Engineering Consulting firms of the country to provide engineering consulting services for the Detailed Design

work of the proposed bridges including River Training Works and approach Roads under Package No.37

There are altogether 10 nos. bridges in the package covering the districts of Bajhang, Bajura and Achham.

1.3 Project Consulting Services

The Department of Roads, Bridge Project intended to utilize the services of the Local Consulting Firms to

undertake the Detailed Design of Bridges including river training works of the bridges under package 37. The

consultant is to conduct reconnaissance survey, detailed survey, soil investigation works, hydrologica

studies, detailed design of bridges including river training works and the environmental aspects of the bridge

sites. After completion of each stage of works, the consultant is expected to prepare and submit reports for

the DOR's perusal and necessary comments. Having completed the design works the consultant will need to

make a presentation of its works in presence of the DOR personnel if DOR requests to do so. The consultant

shall be responsible for the authenticity of all the field works including soil investigation including the design

works and their respective drawings.

1.4 Reporting

As called for by the TOR, the Consultant is aware of its responsibility to submit following reports:

Inception Report describing the field findings of the reconnaissance survey within 6 weeks from the

signing of the contract agreement

Field Report and Preliminary Design Report within 16 weeks from the date of signing of the Contract

Agreement highlighting the site plan including the bore logs of the sub soil exploration.

Draft report consisting of the Main Report (Vol. I); Drawings (Vol. II); Design Calculations (Vol. III)

and BOQ and Special Provisions to Standard Specification including Appendices if any within 20

weeks from the submission of the Field Report.

Presentation of Design Report: The consultant shall present its design with the help of power poin

to the DOR audience prior to the submission of Final Report. The date for such presentation shall be

agreed upon with the DOR.

Final Report shall be prepared and submitted by incorporating all the comments and suggestion in

the Draft Report including the suggestions as received during the power point presentation. The

Final Report shall be submitted within 4 weeks after receiving the written comments from the DOR.


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1.5 Purpose and Structure of Inception Report

The main purpose of the Inception Report is to present the field reconnaissance findings including the

methodology which the consultants propose to adopt to undertake the consulting assignment. The report shal

also include the details of the present field situation and the location of the proposed bridge sites. The report

shall highlight the situation of the proposed bridge sites and shall briefly describe its location including its

surroundings. The report shall also include the proposedAll bridge sites were visited whose locations were identified and for those sites whose locations could not be

identified, they were discussed in length with the locals and tried to find the alternatives. Based on the field

reconnaissance the findings and observations are included in the Inception report. The field reconnaissance

revealed that among ten bridges, detail engineering survey of two bridges has already been conducted

location of two bridges could not be identified. one bridge neither the location of site nor the name of river

could be found and one is under construction phase. Despite lots of exercises the location could not be found

there seems to be a mismatch between information provided by local people and named mentioned in

contract document.


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SECTION II: PROJECT REVIEW CONDUCTED

2.1 Desk Study

Immediately after signing of the Contract Agreement the consultants carried out works related to Desk Study.

In line with the task, the consultants collected necessary documents in the form of available maps and related

enquiry with the DOR personnel. Based on the study and as per the available information preliminary site

locations were identified in the district map as well as in the Transport Infrastructure Maps. In line with the

available information, the locations were tried to match in the Goggle Map and the detailed guidelines were

prepared for the field reconnaissance. The following are the preliminary findings from the Desk Study:

Name of river forChede khola is not found in both Google earth map and Transport infrastructure map

But name of road, Saphebagar Martadi Sadak can be found in maps. Hence approximate site was

selected near to this road in map.

Name of river and name of bridge forKodarigad bridge is not found in Google earth map and available

transport infrastructure map but name of road Saphebagar Martadi Sadak can be found. Hence

approximate site was selected near to this place in map which is attached in Annex.

ForBudhi Ganga Khola Bridge, site is located on the road Saphebagar martadi Sadak, which can be

seen in Google earth map. In Transport infrastructure map name of river can be seen and site is

approximately located where river crosses the road. The map is attached in annex

ForBire Khola Bridge, name of riveris not found in Google earth map and transport infrastructure map

only name of road, Saphebagar martadi sadak can be found in transport infrastructure map. The site is

marked on the way of Saphebagar martadi sadak which is attached in annex.

ForTipadighad bridge, name of place Tipada bazaar can be seen in Google earth map. So approximate

site is located near to this place in map which is attached in annex.

For Kodigad bridge, name of river is not available so approximate location was not assumed. It was

supposed be identify in field visit.

ForMahamai Khola Bridge, name of bridge cannot be seen in both Google earth map and transport

infrastructure map. It was also supposed be identify in field visit.

For Karnali nadi Bridge, name of river (Karnali nadi) can be found in Google earth and transpor

infrastructure map. The approximate site is selected by seeing name of river in Google earth which is

attached in annex.

ForSeti nadi Bridge (Pankot) in Bajhang, name of place Chainpur can be seen in both Google earth

and transport infrastructure map and the site is approximately located near the place in the map which is

attached in annex.

For Seti Nadi Bridge (Tamail/Jadar road), name of river can be found both in Google earth and

transport infrastructure map. The site is approximately located near head quarter of Bajhang, Chainpur in

maps which is attached in annex.

Conclusion: Name of place (VDC) on right bank and left bank of river is not clearly defined in provided

information and also in available maps, so it needs field visit and observation to find out exact location of

bridges sites and other detail of site condition.


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2.2 Meeting, Discussion and Field Reconnaissance

A. Discussion with DOR Personnel

A discussion with DOR personnel was made for overall understanding of the TOR and content before

proceeding to the field. On discussion, it was found that detail information about location of bridge sites was

also unavailable to DOR office. DOR recommended us to visit the site and find out the location of bridge sites

and other information.

A. B. Discussion with DTO Bajhang

A short discussion with DTO and local people of Bajhang was made to sure that our initial location of site

from desk study is correct. Local people Mr. Dill bahadur Singh, Mr. Ghana Shyam Rokeya, Mr. Ram

bahadur Khadka and other DTO members were involved in discussion. During discussion with DDC, we

came to know that detail engineering survey of Seti nadi Bridge (pankot), Bajhang and Seti nadi bridge

(tamail/jadar), Bajhang was already carried out. DOR sub-division Bajhang informed about detail engineering

survey and we brought cover page of detail survey report. Detail about discussion of site is attached in the

Annex A.

B. Discussion with DOR, Bajura

Before going to site, we discussed with DOR members at Saphebagar division office. Er. Khadga lal

Shrestha, Rajesh Poudel, Ram bahadur Buda and other members were involved on discussion. According to

them there is no Chede khola bridge in Bajura and location of other four bridge were informed to us on

discussion. According to the local people and DOR sub-division members information there should be

Ghatte khola bridge in place of Chede Khola Bridge. So, we just visit the site and take information of it. We

also confirmed it by asking with local people Padam bdr Badwal and DOR sub-division members Prem

Singh Budha who was serverd there from 21 years.

C. Discussion with DOR base-camp and DDC Achham: We went to DOR base-camp Bajurghat which is

situated at border of Bajura and Achham district on the way of Saphebagar Martadi sadak to take information

about the location of site. DOR members Prem singh Budha and Gokul Giri informed us about the location of

site. According to them, there is no Mahamai khola bridge and Kodigad bridge on the way Saphebaga

Martadi Sadak after that we meet with LDO of DDC Achham Mr.Bishnu Prasad Koirala and request him to

identify the location of bridge site. He also informs that there is no Mahamai Khola bridge and Kodigad

bridge on the way of Saphebagar Martadi Sadak. On discussion he suggested us to visit another two sites in

place of two bridges whose location is not identified. He also made letter informing that there is no MahamaKhola bridge and Kodigad bridge on the way Saphebagar Martadi Sadak and consultancy can visit another

two sites where people are demanding bridge. As per suggestion of LDO we visit site of Budhi Ganga khola

Bridge (at border of Bajura and Achham) but we could not reach to Kailash khola Bridge because the site

was more than 50 km away from motorway which was not accessible. Another Bridge was Karnalai nad

bridge on the way of Achham-Surkhet Sadak. At the time of meeting with LDO, he informs us that currently

Bridge is on construction phase.


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D. Field Reconnaissance

Field visit of the sites is done to make clear identification on location of site, to find out approximately span o

bridge and to identify geology/terrain of site.

Data collection of the site depends on the questionnaires made to the local bodies (DTO, VDC) and local

people. Some of the questionnaires which were asked during field visit are as follows

i. Where and how far is the location of the site?

ii. Is any kind of survey is done before?

iii. Origin and destination of road.

iv. Chainage of the site from origin of road.

v. Name of left and right bank of river.

vi. Is there any kind of dispute on bridge site location?

vii. Does provided information about bridge site is correct? etc.

Detail information about location of site is appended as an Annex.

2.3 Observation from Review

Status of bridge site and important issue during site visited are summarized in tabular form as below.

Table 2.1 Status of Bridge Sites

S.N Name of Bridge Status

1 Seti nadi bridge (pankot), Bajhang Detail survey is already carried out from DOR (coverpage of detail survey is attached) about two years ago(january 2011).

Soil test is also carried out.

Geological investigation is already carried out about2years ago.

Construction work is not started yet.

2 Seti nadi bridge (tamail/jadar),Bajhang

Detail survey is already carried out from DOR about 2years ago.

Geological investigation and soil test is already carriedout.

Construction work is not started yet.

3 Tipadighad bridge, Bajura No survey is carried out for construction of work.

Required detail survey.

4 Budhi Ganga khola bridge, Bajura No survey is carried out for construction of work.


5 Kodarigad bridge, Bajura No survey is carried out for construction of bridge.

Need detail study for feasibility of bridge site.6 Bire khola bridge, Bajura No survey is carried out for construction of bridge.


7 Tapresera khola/ Ghatte kholabridge, Bajura

Name of river provided by DOR conflict with nameprovided by local people.

There is no chede khola so it is in the place of Chedekhola bridge.


8 Karnali nadi bridge, Achham. Now It is at under construction on the way of AchhamSurkhet Sadak at belkot, Achham

Information was given by DDC of Achham district


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(mangalsen).

9 Budhi Ganga khola bridge, Achham This new bridge is added by DDC of Achham districtaccording to local peoples demand at the place ofmissing bridge.

No survey is carried out for construction of work.

10 Mahamai khola bridge, Achham Name of bridge provided by DOR was not found on

the provided road (Saphebagar Martadi Sadak) It was confirmed by DDC of Achham (attached letter).

11 Kodigad bridge, Achham Name of bridge provided by DOR was not found onthe provided road (Saphebagar Martadi Sadak).

It was confirmed by DDC of Achham (Letter isattached).

Important Issue

Important issue encounter during field visit are summarized in tabular form as follows:

Table 2.2 Important Issue of Bridge sites

Problem Encounter Required Remedial Action

1. Karnali nadi bridge :

Bridge at construction phase Need to informed by concerneddepartment.

2. Mahamai khola bridge :3. Kodigad bridge :

Location not identified Need to ask concerned Department

4. Chede khola:

Name of river mismatch Need to make clear on Name of river

2.4 Methodology of project work

In order to achieve various requirements of TOR, the approach has been conceived and developed to fulfill the

objectives and scope of consultants services. The consultant firmly believes that the approach presented herein

reflects the commitment for providing high quality services for the successful completion of the project in time

bound manner. To meet the objectives and scope of works, the methodology for assignment is developed by

dividing the works into four task series. Each task series shall be broken down into various relevant task to

complete the activities within them. The individual items of work required for major components shall be

identified and explained subsequently. Summary of the Task Series is presented below:


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Table 2.3 Task Series and Task Flow

Task No DESCRIPTION OF TASKTask Series 1 : Desk Study

1.1 Mobilization

1.2 Desk Study

1.2.1 Review of existing reports, data and other literaturesTask Series 2 : Feasibility Study

Field Work

2.1.1 Data Collection

2.1.1.1 Socio-Economic Data

2.1.1.2 Engineering Data

2.1.2 Fixing Alternate Three Bridge Site

2.1.3 Detailed Topographical Survey

2.1.4 General Geological and Geomorphologic Study

2.1.5 General Hydrological Study

2.2 Feasibility Analysis

2.2.1 Technical Feasibility

2.2.1.1 Computation, Plotting and Mapping

2.2.1.2 Detail Hydrological Study

2.2.1.3 Geo technical and Geological study

2.2.1.4 Selection of most suitable bridge site

2.2.1.5 Alternate Bridge Type

2.2.1.6 Preliminary Estimation of the cost of bridge

2.2.1.7 Cost comparison of different types of Bridges

2.2.2 Economical Feasibility Analysis

2.3 Preparation and Submission of Feasibility Study and Field Report and approval

Task Series 3: Detailed engineering Survey and Detailed Design

3.1 Detail Engineering Survey

3.1.1 Subsurface exploration

3.1.2 Data Analysis

3.1.3 Seismological study

3.1.4 Environmental Protection

3.2 Preliminary Design (size, type and configuration of the Bridge)

3.3 submission of preliminary design report and approval

3.4 Final detail engineering design

3.4.1 Fixing design parameter

3.4.2 Analysis of bridge Structure

3.4.3 Design of Bridge

3.4.4 Preparation of Drawing

3.4.5.1 Quantity Take off

3.4.5.2 Rate Analysis

3.4.5.3 Cost Estimation and Bill of Quantities

3.5 Preparation and submission of Draft Report

3.6 Client Option and comments on draft Report

3.7 Final Report Preparation and Documents

Task Series 4: Reports, Plans and Documents

4.1 Feasibility Study and Field Report

4.2 Preliminary Design Report

4.3 Draft Report

4.4 Final Report


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SECTION III: CONSULTING SERVICES

3.1 Design Consultants:

As per the procurement guidelines of the Government, the Department of Roads, Bridge Project completed all the

formalities that is expected to be completed to procure the Design Consultant. Accordingly Nepal consult and

Pees Consultants Joint Venture were awarded package 37 consisting of 10 numbers of bridges for the Feasibility

Study, Detailed Engineering Survey, Soil Investigation, Hydrological Study and Detailed Design.

3.2 Mobilization of Consultants:

Immediately after signing of the Contract Agreement, the Consultants started mobilization by engaging the Projec

Director along with supporting engineers and other staffs from 7 Baisakh 2070. Nepal consult (P) Ltd. the lead

firm, provided required office logistics including office space for undertaking the project works. With regard to

personnel involvement, the project director and the bridge engineers along with other support staffs were

deputed.

3.3 Objectives:

The objective of the job is to design a Safe, Reliable and Cost EffectiveBridge using appropriate technology

The Bridge shall be designed considering the availability of skilled manpower, construction material, condition of

accessibility and other prevailing working conditions.

3.4 Scope of Works:

The scope of works to be carried out by the consultant shall include but may not be limited to the following:

3.4.1 Desk study:

A desk study should be carried out collecting all data, maps and information relevant to bridge design and review

them for planning field survey and investigation works as well as detailed design.

3.4.2 Feasibility Study

Feasibility study shall include the following:

3.4.2.1 Technical Feasibility Study: It should include review of the available data, collecting, reviewing and

analysing the field data to be used in the study and conducting analysis to decide upon the technical feasibility ofthe bridge sites. A cost comparison of different types of bridge shall be made and disussed

with the DOR before proceeding to bridge site for soil investigation.

In this study the following points related to the river, its catchment area and all the considered bridge site should

be studied in detail:

i. Topography

ii. Nature and structure of the surface soil

iii. Nature and structure of local as well as regional geology

iv. Other information as needed


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3.4.2.2 Bridge Site Selection: Alternative bridge site shall be studied based on 3.1.2.1 and the most suitable

site of the bridge based on the above criteria of the site as well as the catchment area shall be selected. The

selected site should be clearly indicated in the map and all the characteristic features on the chosen bridge site

shall be given, in order to facilitate easy reference easy reference while designing the bridge.

3.4.2.3 Topographical Survey: The topographical survey of the area should cover a minimum distance of 500

m upstream, 200 m downstream and 200 m from the river banks on either sides of the river at the proposed

bridge site. The topographical map should show the following:

i. Contour at 1 (one)m, intervals in hilly area and at 0.25 m in plain area

ii. Flood lines on either sides of the river in the entire area surveyed.

iii. Lines with spot levels along which the bed slope of the river is taken

iv. Both bank of river

v. Lines along which cross section of the river is taken

vi. Govt. and /or public establishments

vii. Traverse lines, benchmarks references lines and/or points with respect to which the present topomap is

prepared.

viii. The angle and direction of skew, if the bridge is proposed to be aligned skew

ix. The name of the nearest identifiable village/town etc. in either ends of the bridgex. Other information relevant to design, construction and/or maintenance of the bridge

3.4.2.4 Hydrological Study: For determination of all design data the consultant shall carry out a detailed

hydrometrical survey and hydrological study of the river and bridge site, which shall include the following:

i. Catchment area of the river up to bridge site

ii. Length of the river from origin up to bridge site

iii. Possibility of change of catchment

iv. Nature, size and quantities of debris carried by the river

v. Intensity, duration and distribution of rain in the catchment

vi. Vegetation, cultivation etc. of the catchment

vii. Existence of reservoirs lakes etc in the catchmentviii. Existing bridge or other hydraulic structures across the river in the vicinity of the proposed bridge site with

their details as much as possible

ix. General slope of the river from the critical point (origin) of the river up to bridge site and general slope o

the catchment in both sides of the river.

x. Cross section covering 200m beyond flood lines of the river at proposed bridge site, at about 500m u/s

and 200m d/s where in HFL, LWL, LBL, area of the cross section, wetted perimeter and geological profile

with silt factor of each strata ( at proposed bridge site only) shall be indicated (horizontal and vertica

scale of the cross section shall be same)

xi. Bed slope of the river which must start from 100m up of the U/S cross section and end at 100m down o

the d/s cross section

xii. Maximum discharge calculated by established formula with different return periods and the peak

discharge observed over a period of 100 years.xiii. Velocity and depth of flow the time of survey

xiv. Shifting of the river in the past at proposed bridge site and in its vicinity

xv. Other information required for river control, design, construction and maintenance of the bridge.

3.4.2.5 Seismological Study: The consultants shall collect and refer to the available data regarding the seismic

records of the area. Seismic Forces; According to the Indian Standard Criteria for Earthquake Resistance Design

of structure IRC: 6 may be followed.


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3.4.2.6 Environmental Study: The consultant shall predict damages to the environment and attempt to

mitigate or minimize the damages by choosing appropriate site, cross-section, type of structure etc. and suggest

appropriate measures in the design for protection of surrounding Environment. The Environment Protection Act,

Environment Protection Rules and the DOR environment policies including Environment and Social Management

Framework (ESMF), modified by GESU/DOR for bridges should be followed.

3.4.3 Preliminary Design of Bridges:After the selection of the proposed bridge site with alternatives and

preparation of topographic maps the consultant shall prepare a Preliminary Design Report including feasibility

report and discuss with concern Project In charge of the DOR on the overall feasibility of the site, boring numbers

and locations, concept design and other aspects as listed below for the detailed survey and design of the bridge:

i. Design discharge

ii. Scour depth, maximum scour depth

iii. Linear waterway needed to be provided

iv. Anticipated soil condition for foundation

v. The most feasible proposed bridge site

vi. River-training and approach roads,

vii. Type of proposed foundation, substructure and superstructure.

The discussion will be done on the basis of the topographic maps, preliminary findings of the parameters (i to vii)

above, location of the bridge with respect to the complete road network of the district. After discussion and

finalization of the bridge site/axis the consultant shall carry out subsurface exploration which shall include the

following:

3.4.3.1 Test pits and Auguring: test pits and auger-holes in the riverbed to a depth as mentioned in the BOQ fo

determining the mean particle size of riverbed material in each layer.

3.4.3.2 Bore-holes, Field Tests and Laboratory Tests: the properties of the underlying soil are determine by field

and laboratory tests of the soil samples obtain from the bore holes drilled to a depth as mentioned in the next

section and/or the Bill of quantities. As far as possible, the location of the boreholes shall be under each abutment

and piers. Generally the following tests are conducted for determination of soil properties:

SN Type of test Frequency

1 Undisturbed soil sample at least 2 at each borehole

2 Standard penetration test as required but interval not less than 1,5m

3 Grain size analysis at least 2 at each borehole

4 Hydrometer analysis at least 2 at each borehole

5 Moisture content at least 2 at each borehole

6 Bulk and dry density at least 2 at each borehole

7 Unconfined compression test at least 2 at each borehole

8 Consolidation test at least 2 at each borehole

9 Direct shear test at least 2 at each borehole

If required by the field condition, the Consultant shall conduct other types of test. Similarly the frequency of the

above tests can be increased if required. The cost of all the field and laboratory tests shall be incorporate in the

cost of soil investigation works. No separate payment shall be made for the tests.


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3.4.3.3 Depth of Soil Exploration:

The depth of soil exploration from ground level shall be as follows:

SN Type of soil Governing depth

1 Silty, sandy, clayed soil 3 times the design scour depth,

or 1.5 times the least dimension of the foundation footing or 20 m,

Whatever is maximum

2 Granular soil (Gravels,

boulders)

2 times the design scour depth,

or 1.5 times the least dimension of the foundation footing or 16 m,

Whatever is maximum

3 Rocks (soft or hard) Not exceeding 8 m

The above mentioned depths are indicative. The Consultant shall decide the actual required depth of soi

investigation according to the field condition and design parameters. But in any cases the consultant shall be paid

only up to the depth mentioned in the Bill of Quantities. If rock is found at the beginning or at mid depth then the

drilling works shall not exceed the depth as mentioned in the table above. In such case the payment shall be

made only for the actual depth.

For example, if rock is found at a depth of 12m and if the maximum required depth is 16m, then drilling shall

continue only for further 4m and the payment shall be done for 16m. if rock is exposed on the surface then drilling

shall be done up to a depth of 8m and the payment shall be done for 8m. But if the thickness of rock at the

surface is 6m then the drilling shall continue further to the required maximum depth.

3.4.3.4 Soil Exploration Works to be Certified: the consultant must notify the commencement and completion

of soil/rock drilling work to the Department. The department will send its representative to the site during the

drilling operation either from Bridge Project or from concerned Division Roads Office / Project Offices to verify and

certify the works and bore logs. This certification document is mandatory for the payment of the drilling works.

3.4.3.5 Other Information:

Availability of construction material like, sand gravel, boulders, timber etc. with their engineering properties

quantities and lead up to the bridge site. Quarry site of material with their available quantities should be shown on

a sketch plan with references

3.4.4 Analysis of Data, Conclusion and Recommendation of Design Parameters.

Based upon the above mentioned studies and investigation the consultant shall make the best use of their

technical know-how and professional skill to arrive at and recommend the most cost effective design parameters.

The consultant shall discuss in detail at least three different option and shall recommend the most appropriate

option.

The consultants are required to design the bridges keeping in view of the introduction of modern constructionmaterials and technology into bridge construction industry. It is highly recommended to use prestressed concrete

in their design. Ordinary RCC or steel superstructure shall only be accepted if there is sufficient ground in favor of

them as compared with the pre-stressed concrete.

3.4.5 Miscellaneous

If not covered by aforesaid, the Consultant shall perform other studies, explorations, test surveys, calculations

etc required to produce full and complete set of working drawings, specification, bills of quantities requirements of


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material and complete cost estimates for the bridge/s including related works based upon which construction

activities can be started to complete without further study and/or reference to them.

3.4.6 Detailed Design and Quantity/Cost Estimates

Based on the collection information and results of the discussion mentioned above the consultants shall designthe bridge following the standard codes of practice, norms and guidelines. The consultant shall design new

technological bridge such as Pre-Stressed Bridges/ Arch Bridges/ Suspension Bridges / Cable Stayed or othe

new type of bridge acceptable to the Department. The relevant codes of IRC for the design of bridges and

Nepal Bridge Standards 2067 shall be followed. The list of all references literature and materials shall be

provided on the report.

The consultant shall produce detailed quantity estimate of the bridge and its accessories. They shall collect

information on sources of materials and their lead distances and prepared rate schedules and cost estimates

based on the standard norms and prevailing district rates.

3.4.7 Use of Standard Design(s):

Depending upon the site condition and other factors if the department ask the consultant in writing, the consultant

can use the Standard Design of the part(s) of the bridge, which shall be made available by the DOR. This matter

will be discussed and finalized during the presentation of the preliminary Design or at a later stage convenient to

both parties. If such Standard design is used the Consultant shall adjust the design of other parts of the bridges to

incorporate the parameters of the Standard Design.

If it is decided to use any standard design, the payment shall be adjusted according to the condition of contract

and/or as mentioned in the BOQ.

3.5 Work Schedule:

The consultant's work schedule is appended as an annex. The schedule has been prepared in line with the time

allocated by the contract agreement. Based on the consultant's experience the specific time havebeen allocated

for each activities. It should be mentioned here that the schedule has been prepared on the condition that the

detailed field investigation works including survey will be completed before the onset of the monsoon. But due to

present situation whereby the pre-monsoon rain has been very frequent and may disturb the field survey works

We are, however planning to complete the field survey works before the onset of monsoon. Should there be any

disturbance in the field survey works the work schedule may need to be revised and might affect the scheduled

completion date as well. The eventuality of possible disturbance cannot be shown and hence is not shown in the

work schedule which is appended as an appendix.

3.6 Staffing Schedule:

The staffing schedule presented earlier in our Technical proposal is recommended to be updated to reflect the

duration of the consultancy services to approximately 10 months. The proposed revised staffing schedule

recommends to use the services of the Project Director/Structural Engineer who will be primarily responsible fo

preparing Inception Report and then on he will liaison and coordinate the team including the Bridge Design

Engineer for the successful completion of the whole assignment. The staffing schedule has been based upon the

work programme developed after review of the current situation.


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Mr. Keshab Man Amatya has been proposed as Project Director and Mr. Dipak Manandhar as a Bridge Design

Engineer to be supported by another Structural Engineer Mr. Kaushal Ghimire. The man month input of each

personnel is indicated in the Manning Schedule which is appended as an appendix.

SECTION IV:CONCLUSION AND RECOMMENDATION

As per contract agreement, there are ten (10) bridges in the Contract No. BP-661-DSD-37-068/69 fo

feasibility study, detailed engineering survey and detail design of the bridges. It is found that only six bridge

required detail engineering survey for design of bridges which are mention in table below. Finding from

preliminary reconnaissance of site and recommendation for further detailed survey are summarized as

follows.

Detail survey of two bridges, Seti nadi bridge (pankot), bajhang and Seti nadi Bridge (tamail/jadar)

Bajhang were already carried out.

Location of two bridge Mahamai khola bridge, Achham and Kodigad bridge, Achham is not identified.

ForChede khola bridge name of bridge, as per contract document does not match with name provided

by local people.

ForBudghi Ganga khola bridge, Achham, it is not included in list of contract agreement of DOR bu

added by DDC of Achham according to local people demand in place of two bridges whose location is not

identified. (Mahamai khola bridge, Achham and Kodigad bridge)

ForKarnali nadi bridge, Achham, currently Bridge is on construction phase.

For other bridges there is no conflict on location and they required detail engineering survey for design of

bridges.

Selection of an appropriate superstructure is a critical factor in the planning and design stage. Final selection and

recommendation of bridge will be done after feasibility study, detail engineering survey, detail geological and

hydrological investigation. From preliminary reconnaissance of field only approximately length of bridge is

estimated which is mention in table 4.1.

Table: 4.1 approximate length and type of bridge recommended.

S.N Name of BridgeApproximately estimated

span (m)

Detail survey

Remarks

1Seti nadi bridge

(pankot),Bajhang

Detail survey is done by DOR

2Seti nadi bridge(tamail/jadar),

BajhangDetail survey is done by DOR

3Tipadighad

bridge, Bajura32

Required

4Budhi gangakhola bridge,

Bajura43 Required


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5Kodarigad

bridge, Bajura51

Required

6Bire khola

bridge, Bajura22

Required

7Tapresera khola

bridge, Bajura

33Required

8Budhi gangakhola bridge,

Achham114 Required

9Karnali nadi

bridge, AchhamUnder construction

10Mahamai kholabridge, Achham

Not found on the way ofSaphebagar Martadi Sadak

11 Kodigadbridge,Achham

Not found on the way ofSaphebagar Martadi Sadak


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ANNEXES


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Annex A: Work Schedule


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Annex B: Staffing Schedule


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Annex C: Letter from DDC


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Annex E: Data on location of bridge site.

I. Name of project: Tipadighad bridge.

Location:

District Bajura

Village/town LB: Budhiganga-4 RB: Budhiganga-4

Name of road Saphebagar Martadi Sadak

Name of river Tiapadighad khola

Origin and destination of road Saphebagar Martadi Sadak

Chainage of the bridge site (chainageform origin of the road) On the way of Saphebagar Martadi Sadak

Geographic location:

Easting 08124.926

Northing 2924.510

Elevation 1098 m

Bridge span: 32m

II. Name of project: Budhi Ganga khola bridge.

Location:

District Bajura

Village/town LB: budhiganga-4 RB: budhiganga-6


Name of river Budhi ganga khola


Chainage of the bridge site (chainageform origin of the road)

On the way of Saphebagar Martadi Sadak

Geographic location:Easting 08125.469

Northing 2924.918

Elevation 1121 m

Bridge span: approx 43m

III. Name of project: Kodarigad bridge

Location:

District Bajura


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Name of river Kodarigad khola





Easting 08125.764

Northing 2925.151

Elevation 1178 m

Bridge sapan: 51m

IV. Name of project: bire khola bridge

Location:

District Bajura



Name of river Bire khola





Easting 08127.298

Northing 2926.024

Elevation 1236 m

Bridge span: 22m

V. Name of project: Tapresera khola bridge, Bajura.

Location:

District Bajura

Village/town LB: Baramhamtola-1 RB: Baramhamtola-1


Name of river Tiapadighad khola

Origin and destination of road Saphebagar Martadi SadakChainage of the bridge site(chainage form origin of theroad)



Easting 08122.038

Northing 2922.982

Elevation 991 m


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Bridge span: 33m

VI. Name of project: Budhi ganga khola bridge, Achham

Location:

District Achham

Village/town LB: Barhabis-7, Bajura. RB: thati-1, Achham.

Name of road Khaptad Nandama Ramaroshan Badimalikaparyatan marga.

Name of river Budhi ganga khola

Origin and destination of road Sanfebagar Martadi Sadak to Badimalika.


2km away from Sanfebagar Martadi Sadak


Easting 08118.123

Northing 2919.164

Elevation 827 m

Bridge span: 114m

Annex F: Location of bridge site on transportation map.


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Annex G: Location of bridges site from Google maps

i. Seti nadi bridge,pankot, Bajhang:

ii. Seti nadi bridge tamail,jadar Bajhang:


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iii. Tipadighad bridge, Bajura:

iv. Budhi ganga khola bridge, Bajura:


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v. Kodarigad bridge, Bajura:

vi. Bire khola bridge, Bajura:


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vii. Ghatte khola/ tapresera khola bridge, Bajura:

viii. Budhi ganga khola bridge, Achham:


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ix. Karnali nadi bridge, Achham: