METHOD STATEMENT

FOR
CONSTRUCTION OF WATERPAN

Method Statement Page 1

 METHOD STATEMENT FOR THE WATERPAN CONSTRUCTION WORKS

1.0 INTRODUCTION

1.1 General

The purpose of this waterpan method statement is to describe the activities, sequence and
methods that are mandatory for carrying out this assignment which is waterpan construction
works. The activities described here under covers the scope of works for the
CONSTRUCTION OF KOSITEI WATERPAN IN BARINGO COUNTY. Since Inception, we
have carried out numerous waterpan projects and this forms the basis of this method
statement applicable in these projects.

As an ambitious Construction Company, we have adopted the best practice over time to
ensure we deliver our projects to the Clients’ satisfaction and beyond.

1.2 Components of Method Statement

In the execution of the works as spelt out in the program of works, the Contractor intends to
take the following basic steps in order to achieve his objectives:
 Mobilization.
 Publicity Sign Boards
 Setting Out
 Excavation And Construction Of The Water Pan.
- Embankment
 Spillway.
i. Concrete Sill
ii. Riprap
 Silt Trap
 Quality Control
 Demobilization.

2.0 MOBILIZATION

2.1 General

The contractor shall, upon being given notice of Order to Commence, make necessary
arrangements to mobilize plant/machinery, site staff and any other persons connected to the
project.

2.2 Mobilization of Key Personnel

We shall deploy personnel to site as soon as the site has been handed over. Contractor
shall comply fully with the personnel requirements of the Contract and comply with all the
labour laws of the Country as well as providing all the necessary evidence of personnel
qualification an experience. The Contractor before deployment seek an approval from the
Client on the suitability of the Key Personnel. The three main key staff on site are:
 Site Agent (1)
 Foreman (1)
 Plant operator (2)
 Surveyor
Other site staff to be deployed for this assignement shall include are;
 Drivers

Method Statement Page 2

  Watchmen
 Plant operators
 Surveyor
 Chainmen
 Casual workers
 Hired park security personnel as and when needed
Gender equality as well as compliance with Water 2000 strategy shall be fully ensured. The
Contractor shall make daily returns to the Client for concurrence with gender balance being
adopted by the Contractor.

The Contractor will mobilize the following key personnel in executing the activities in the
program of works;
Position Assigned Tasks
Project Director  Coordinate project activities
 Coordinate cash flow
 Coordinate human resource
 Coordinate machines and equipment
Site Agent  Liaising with clients and reporting on progress
 Supervising construction workers and hiring subcontractors
(if any).
 Buying materials for each phase of the project
 Monitoring build costs and project progress
 Conducting quality and safety inspections
 Checking and preparing site reports, designs and drawings
 Maintaining quality control checks
 Motivating the workforce
 Day to day problem solving and dealing with any issues that
arise
 Using specialist project management computer programmes
 Working on-site in all weathers, at clients’ businesses or in a
site office.
Foreman  Supervise key activities like excavation,concrete works and
otherwaterpan construction activities.
 Supervise waterpan construction crew daily and assist a
team of heavy equipment operators to build water projects
 Provide hands-on training as required
 Manage project start-up, one calls, utility locates and sub-
contractors
 Manage and coordinate activities with the landowners,
contractors, other consultants and the approving authority
 Read, interpret, and understand construction drawings and
specifications
 Monitor expenditures to ensure projects remain within budget
Surveyor  Produce waterpanlayouts using surveying instruments and
tools.
 Supervise setting out of carious items
 Levelling
 Establish lines and grades within the construction site by
performing construction surveys.
 Perform daily record keeping of work performed on a daily
basis and share the records with the Site Agent
Plant operator  Operating heavy machinery and equipments on site

Method Statement Page 3

The contractor will also mobilize support staff which include and not limited to driver (s),
secretary and unskilled labour.

As part of the Contractor’s tradition, unskilled labour will be sourced 2.3

from the locals where the project will be implemented. Si

te organisation

Projects manager/Engineer – Headquarter Based

Site agent Foreman & Surveyor

Machineries Semi-Skilled
Operator / Driver Staff

2.4 Mobilization of Machines and Equipment

Well-operated equipment are essential ingredient in successfully implementing a road
construction project. The contractor will mobilize the following equipment where applicable
to ensure successful completion of works;

Equipment Function
Dozer D6 Dozer will be used for preparation of formation, levelling of tipped
material, processing of fills in layers. Level to desired pre-compaction
thickness and where practicable shall be used for top soil stripping.
Drum Roller For compaction
Excavator For Excavation of gravel material and load it onto the tippers. This will
also be used for demolishing, stock piling materials and to be used
where dozer cannot be used.
Pickups For transport of light construction material
Tippers It will be used to haul fill material/gravel material to the required
sections and to haul cleared and grabbed material and top soil material
to the designated spool areas.
Poker vibrator For compacting concrete
Concrete mixer For batching
Other simple Wheelbarrows, spades etc for simple tasks on site
tools

Mobilization of this equipment will include hiring of equipment not owned by the contractor.

2.4.1 Equipment Ownership

The contractor owns some of the basic equipment necessary for execution of works as
indicated and evidenced in standard forms of tender however at instances where the
Contractor lacks the equipment the Contractor has already established an agreement with
Mechanical and Transport Department in Nairobi – MTF to hire these equipments.

Method Statement Page 4

2.4.2 Equipment Management Plan:

We shall provide a well-resourced equipment return schedule that clearly indicates

equipment usage and operation i.e. idle time, break down and operation to ensure optimal
use of and accountability of equipment engagement. The Plan shall also include preventive
maintenance schedule of the equipment and vehicles for the project.

2.5 Publicity Board

The Contractor shall provide Sign Boards as specified on the Drawings or as directed by the
Engineer. The Sign Boards shall be placed at the beginning and end of the road or road
section covered by this Contract. Sign Boards shall be maintained for the duration of the
Works, and retained on site upon completion of the works.

2.6 Sources of Materials

At mobilization stage, the contractor shall at the same time, establish potential borrow pits
for gravel from the area adjoining the project road.

Sources of materials like bitumen, chippings etc. will also be identified at this stage.

2.7 Setting Out.

The Contractor shall also use this time to acquaint himself with the existing service lines as
well as structures.

The Contractor intends to use the available space and alignment with minimum disturbance
to the existing Structures.

3.0 CONSTRUCTION OF THE WATER PAN METHODOLOGY

3.1 Excavation

We shall mobilize the necessary excavation equipment to the site and proceed to
excavate the reservoir area to the specified depth of 2-3 meters, ensuring proper
compaction of the excavated area. Following excavation, we will begin the
construction of the embankment, placing and compacting suitable materials in layers
to form the embankment with a width of 4 meters and side slopes of 3:1 upstream
and downstream

3.2 Spill-way installation

To begin the spillway construction, we will excavate the designated area to the
specified dimensions of 8 meters wide at the bottom and a length of 72
meters, with side slopes of 1:1. Following this, we will proceed with the
construction of a concrete sill, measuring 12 meters in length, 0.3 meters in
width, and 0.8 meters in depth, utilizing concrete of class 25 (mix 1:2:4).
Subsequently, selected materials will be placed and compacted in layers of
150mm spillway riprap, ensuring proper stability and functionality. Finally,
riprap will be positioned to cover one-third of the upstream face embankment
from the crest top, completing the spillway installation process.

Method Statement Page 5

3.3 Silt-trap construction

To initiate the construction of the silt trap, we will excavate the designated area to the
specified dimensions of 30 meters in length, 20 meters in width, with side slopes of 2:5:1.
Subsequently, we will proceed with the construction of the silt trap basin, which will measure
20 meters in length and 10 meters in width at the bottom. Following this, the installation of
stone pitching will be carried out to direct sediment-laden water from the collection channel
into the silt trap and then out into the main pan. This process will involve using 250mm
hardcore for reinforcement to ensure the structural integrity and effectiveness of the stone
pitching system.

4.0 QUALITY CONTROL

The compliance testing required to approve the compaction will be performed using the
recognized standard procedures as defined both in General specification AASHTO and
British Standards. However, where possible, it is intended that Sand Replacement Tests be
carried out in sufficient number to realistically assess the insitu density pertaining to the
number of passes of the rollers.

Where such testing is shown to be difficult to perform it may be necessary to prove the
effectiveness of the compaction by proof rolling each section separately.

To support the results of the field testing, samples of the fill material shall be taken for
determination of the parameters listed as follows:

 Particle size Analyses

 Soils Classification Tests MDD/OMC
 CBR
 Natural Moisture Content.

The contractor will ensure that the best standards of workmanship and materials are
obtained for the Employer within the terms of the contract including controlling over what will
be accepted into the works. This may include:-

 Assessing the suitability of the methods proposed by the Contractor (not instructing
him on method).
 Accepting materials to be incorporated into the permanent works.
 Approving the Contractor's workmanship.
Contractor will ensure that materials quality controls is adhered to as per the specification to
ensure that materials used and all working areas comply with the project plans and
specifications.

The contractor will adopt standard construction procedures and quality controls to ensure
that the methods used for executing the work will produce the end results intended by the
plans and specifications.

5.0 MEASUREMENTS AND CERTIFICATION

Computations for quantities will be carried out in accordance with the methods specified in
the construction specifications. The verification of actual work output will be achieved by joint
survey and measurement of completed works carried out by both the Engineers
Representative and the contractor's surveyor as indicted in the document and within the
tolerances specified in the construction documents. The contractor will ensure that the
specified tolerance is not exceeded. Certificates and Payments shall be based on actual
measured quantities of work performed not on billed quantities.

Method Statement Page 6

6.0 PHOTOGRAPH PLAN.

We shall provide a photograph plan to record the condition of the road before and after
works have been done and progress as proof of quality control and measurement or any
event that may arise that affects progress or quality.

The photos will be taken during material testing, before start of the process and completion
of a process, during monthly inspections and at measurement.

7.0 WORKS SAFETY MANAGEMENT AND ENVIRONMENTAL CONSIDERATIONS

7.1 Work Safety Management

a) Work Safety
Safety meeting shall be conducted weekly to induct new staff of the safety requirements.
Staffs will be -provided with safety gears e.g. Safety boots, Helmet, Dust must, gloves and
dust coat, including provision of high visibility clothing or vests for the workforce

b) Accident prevention
To reduce cases of accident on site to individual staffs or animals, the dos and don’ts while
on site shall be explained to the staff.

In addition the contractor shall liaise with the park management for provision of security to
his workers

The Contractor shall be responsible for the provision of all equipment, tools, material, and
temporary stores.

The contractor shall also maintain first aid kits with a minimum of the following items:-
 Crepe bandages
 Gauze and cotton wool Antiseptic solution (washing wounds)
 Antiseptic cream
 Pain killers
 Anti diarrhoea
 Anti nausea Antibiotic
 Eye ointment
 Oral re-hydration sachets
 Surgical gloves

7.2 Environmental Considerations

During the construction period, the Contractor's proposes to take into account environmental
considerations and compliance with stipulations and or mitigation measures for
environmental protection as presented in the Contract Documentation.

The contractor will monitor closely the environmental and safety aspects during construction,
with regards to all mitigation and environmental protection measures. The Environmentalist
will therefore visit the project area on a regular basis. This will also ensure that should any
unforeseen environmental problems arise, recommendations for their aversion or mitigation,
as the case may be, can be made before the problems become intractable.

Quality control procedures for material sites play an important role in environmental
protection, and in addition, will expedite the rehabilitation of the quarries and borrow pits.

The Contractor shall observe the following measures with a view to reducing or elimination
adverse environmental effects by the site works:

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  All quarries and borrow pits shall be filled and landscaped to their original state after
extraction of construction material
 Spillage of oils, fuels and lubricants shall be avoided and if spilt, shall be collected
and disposed off in such a way as not to adversely affect the environment
 Rock blasting near settlement areas shall be properly coordinated with the relevant
officers of the Government so as to minimize noise pollution and community
interference

8.0 FIELD (SITE) DIARY

The contractor shall maintain a daily diary to record the operation(s) being inspected and
record (but not be limited to) the following details
 Weather conditions
 Equipment conditions, hours of work, hours idle or broken down giving reason(s)
why equipment was not productive at any particular time.
 Employees on the section he was in charge of.
 Narrative discussion on the type of work completed by the Contractor by location
compliance with the specifications and directives given concerning amendments or
interpretation of plans detailed structural drawings and specifications.
 Short summary of tests taken indicating actual locations.
 Source of materials used and quantities used when possible.
 Short summary of tests taken indicating actual locations.
 Source of materials used and quantities used when possible.
 Potential disputes.

9.0 SITE MEETINGS

There will be site meetings as regularly as required, with Engineer's Representative. The
meetings will deal, inter alia, with the following matters:
 Approval on rejection of executed work elements
 Work schedule
 Work methods
 Temporary works

10.0 DEMOBILIZATION

Upon substantial completion of works, the contractor shall write to the engineer to request
for substantial inspection of works to allow for processing for payment.

Method Statement Page 8