METHOD STATEMENTS
ZIMPLATS
SMC JUNCTION PROJECT
Revision 0:
Prepared By:
Name
Designation
Simbarashe Gumbo
GATE Project Manager
Signature
Date
Reviewed By:
Name
Designation
ZIMPLATS Engineer
Signature
Date
Approved By:
Name
Designation
Signature
Date
Checked By:
ZIMPLATS Project Manager
GATE Site Engineer
SMC JUNCTION UPGRADE
METHOD STATEMENTS
For Reseal, concrete works & Sundries
 RESEAL,
 CONCRETE WORKS
 SUNDRIES
This Method Statement describes the management arrangements and systems of work to
be adopted by GATE CONTRACTORS (the Company) during civil engineering and
groundwork operations at SMC JUNCTION Project. The document, with its appended
risk assessment, will suffice for the majority of works undertaken by the Company
on the projects and where required alterations or additions for certain operations
will be done and approval sought before implementation. Where additions and amendments
are necessary, they will be listed at the bottom of this page and appended to the document.
Rev 0
2019
1
SMC JUNCTION UPGRADE
Contents
MST001
SJU002
SJU003
SJU003
SJU004
SJU005
SJU006
SJU007
Surveying and setting out. .................................................................................1
Reseal Construction…....................................................................................... 2
Kerbing Construction....................................................................................... 3
Construction Joints .......................................................................................... 4
Overhead and buried service .......................................................................... 5
Manual Handling ............................................................................................. 6
General Site Safety -Traffic Management. ...................................................... 7
Installation of traffic control signs/safety signs ............................................... 8
2
SMC JUNCTION UPGRADE
SJU001 Surveying and setting out.
1
Scope of works/tasks
Generally, the entire construction project involves surveying, the following steps covers the Traverse Survey,
Temporary Bench Mark Survey, and Center Line Setting out, Centre Line marking and Cross Section Survey.
2
Risk Assessment
TBA
3
Labour requirements
4
Plant requirements
1 No. Total Station/dumpy level
4No. surveyors
2 No. Level Instrument
1 Safety Officer
3 No. Tape (30m)
2 Nos. Survey Staff
6 No. Tape (5m)
2 Flagmen
24 No. Traffic Cone
1 No. Rope (30m Length)
2 No. Walkie-Talkies
Traffic signs
Concrete Nails
5
Identity of any Hazardous substances
No hazardous substances identified.
6
Sequence of works/Methodology
This procedure is applicable to survey in areas with conflict with traffic. Site investigation has to be carried out for
safety precautions prior to commencement of the work, in order to display relevant sign boards.
Setting will be done with reference to existing pegs.
Men at work 75m-100m ahead” sign boards would be placed on both left-hand side of the road or
structure being surveyed.
25m away from men at work sign Narrow Road/one lane traffic sign would be placed in order to
notify the drivers with regard to road situation. In the case of structures, appropriate notices should be
placed to direct people away from the area being surveyed.
Working area will be corded off with traffic cones to indicate setting out survey for the oncoming
traffic to see on both sides.
Traffic controllers would be deployed on both sides in order to control “one way traffic”.
Radio communication system would be used where normal communication is impossible.
After completion of the work, safety cones and barricade boards has to be removed accordingly.
7
Permit to Work Requirements
No permit required
8
Review access
The access requirements around the site are itemised separately. These include
Traffic management
Designated traffic/pedestrian routes
Designated emergency escape routes
Prevention of unauthorised entry to the work areas
9
Review of Health Protection
In addition to following safety precaution has to be adopted to minimize accidents that can happen.
Safety helmets, traffic safety vests, boots, dust mask & gloves will be provided.
Warning sign boards would be displayed throughout the site.
First aid facilities would be provided.
Safety officer has to visit the sites twice a day and required safety measures will be adopted at site.
10
Risks
Line of sight destruction of trees.
SMC JUNCTION UPGRADE
SJU 002 Method statement on road reseal.
1. According to Ministry of transport design manual part F section 10.114.5, Before spraying ,
the surface shall be broomed and cleaned of all loose or foreign material by means of a
rotary broom or hand broom.
2. According to Ministry of transport design manual part F section 10.11.4.6, the edges of the
work must be carefully set out. This is a most important operation as the whole
appearance of the completed road depends upon it.
3. According to Ministry of transport design manual part F section 10.11.4.3, the priming
material shall be road tar grade T.P.7 conforming to the latest C.A.S. No. 105. An
alternative of medium curing cut back bitumen, grade M.C.30 conforming to the latest
C.A.S. No. 145 may be authorized in special cases.
4. According to Ministry of transport design manual part F section 10.11.4.9, the prime coat
must be applied by distributor at the application rate recommended by the engineer.
5. According to Ministry of transport design manual part F section 10.11.5.1, for tack coat use
80/100 penetration grade conforming to C.A.S N0.144.
6. According to Ministry of transport design manual part F section 10.11.5.3a , the aggregates
to be used must be crushed stone from approved sources an comply with part P, section 3
of the manual.
7. According to Ministry of transport design manual part F section 10.11.5.3b, the aggregate
for the tack coat shall be -19mm +13.2mm, -13.2mm +6.7mm.
8. Remove all waste, sweep and mark the road according to the drawings, specifications and
as directed by the engineer.
SMC JUNCTION UPGRADE
SJU003 Kerbing Construction
1
Scope of works/tasks
The method statement describes the construction of kerbing. The following sequence of activity shall be followed to
make sure safe execution of the task.
2
Risk Assessment
TBA
3
Labour requirements
4
Plant requirements
1 supervisor
Picks
1 bricklayer
Shovels
1 carpenter
Concrete plant
5 general hands
Hammer and spirit level
5
Identity of any Hazardous substances
n/a
6
Sequence of works/Methodology
i.
Setting out the line to receive kerbs
ii.
Excavate for concrete lining
iii.
Clean up the excavated area
iv.
Check grades to ensure correct fall
v.
Install concrete formwork
vi.
Place concrete blinding maintaining both vertical and horizontal alignment.
vii.
Fix kerbs into position ensuring again vertical and horizontal alignment.
viii.
Pour concrete for haunching.
ix.
Remove formwork after 2hrs
x.
Clean up all concrete spoils
7
Permit to Work Requirements
n/a
8
Review access
No access to non-working employees
9
Review of Health Protection
PPE must be worn
10
Risk
Concrete spoils
SMC JUNCTION UPGRADE
SJU004 Construction Joints
1
Scope of works/tasks
The scope of this procedure outlines methods to be used for constructing effective and durable construction joints in
accordance with the contract specifications.
2
Risk Assessment
TBA
3
Labour requirements
4
Plant requirements
Supervisor 1 No
Hose pipe
Spraying officer 1 No
Brooms
Unskilled Labourers 5 No
Brushes
Concrete mixing gang
Concrete cutter
Concrete dumper
Poker vibrator/concreter mixer
5
Identity of any Hazardous substances
6
Sequence of works/Methodology
1. In some cases CLIENT shall have to prepare shop drawings proposing location and type of construction joints and
obtain approval from the Consultant’s representative before proceeding with the work.
2. Horizontal Surfaces:
Laitance on the surface must be removed from the concrete in order to ensure that a good bond will be achieved
when fresh concrete will be placed against it. Following methods may be used for removing laitance from the top of
walls and columns unless specified otherwise in the contract:
i) Washing and Brushing:
The easiest way is to brush off the laitance while the concrete is still fresh but has stiffened slightly. Brushing shall be
commenced between one to two hours after placing of concrete. Site operatives shall have brushes with soft and hard
bristles so that it can be used depending upon stiffness of concrete. Care shall be taken that the brushing shall not be
harsh which will dislodge the coarse aggregates. In case laitance has hardened but is still green, a wire brush should
be used.
ii) Air and Water Jet:
Laitance can be removed by directing a jet of air and water onto it. This method can be used up to six hours after placing
or possible longer but the site operative must make his own judgement while adopting this method. This operation must
not start too soon because it might dislodge coarse aggregate particles.
iii) Mechanical Scabbling:
If laitance is too hard to be removed by wire brushing, mechanical scabbling can be tried using small percussion
power tools. This method can be applied after 3 days when concrete has hardened sufficiently. Care shall be taken not
to weaken the coarse aggregates.
iv) Abrasive Blasting:
Wet or dry abrasive blasting can be used to expose the aggregate but special safety precautions shall be taken while
using sand.
.3 The most appropriate time for treating the joints is a matter of judgement, because it depends on the rate of setting
and hardening (which is itself dependent on the temperature of the concrete).
.4 Where there is likely to be even a short delay before placing the next concrete pour, protruding reinforcement
should be protected. Before the next pour is placed, rust, loose mortar or other contamination should be removed from
the bars.
5 Vertical Surfaces:
i) Stop Ends/Expanded Metal Mesh:
Vertical joints in walls, beams and slabs are usually formed at a stop end in the formwork. Stop ends shall be located
where the reinforcement is least dense. Holes for reinforcement in stop-ends are a potential weakness because grout
loss can occur. In lightly reinforced sections and where starter bars are acceptable, this problem is frequently avoided
by bending bars so that they run along the inner face of the stop-end. When the stop-end is removed, the bars are cut
out and straightened. However, the cutting out and straightening can damage the concrete and cause local loss of
bond with the bar, especially if this is carried out within 48 hours of placing the concrete.
SMC JUNCTION UPGRADE
Proprietary stop-ends have been developed which overcome this problem by encasing the bent bars in expanded
plastic foam. The foam can easily be removed and the bars strengthened by means of a steel tube. Take particular
care not to use impact to straighten bent steel at stop-ends as this can cause brittle fracture.
Permanent forms of expanded metal are increasingly employed, particularly in deep slabs. The concrete surface produced
by such system is very irregular and does not normally require any surface preparation. Where a very high workability mix
is being used (slump greater than 200mm) with expanded metal formwork, care should be taken to avoid over –
vibration at the joint as this may cause grout loss.
ii) Formwork:
Formwork for subsequent concrete pours must be accurately aligned and well-fixed so that there is no grout leak
which results into discoloration and honey combing. Strips of foam rubber or polyurethane unless specified otherwise
can be fixed around the edge of the hardened prepared joint.
6 The methods explained previously i.e. washing and brushing, mechanical scabbling and abrasive blasting can also
be used in case of vertical joints. However special care shall be taken not to damage the leading edges (leave a margin).
7 Watertight Construction:
i) In watertight construction unless specified otherwise, flexible water bars of specified details can be used. Care shall
be taken while concreting so that all water bars are securely tied to avoid its folding during concreting.
8 Cold Joints:
i) Cold joints normally occur during the concreting operation when a delay in placing adjacent concrete has occurred
and earlier concrete placed has stiffened.
ii) A simple test can be used to determine whether concreting can proceed. Embed the poker vibrator into the
existing concrete to examine the condition of concrete. Where the action of the poker has left a distinct hole, concreting
operations should not continue. In this case the joint face can be prepared by one of the methods described above for
horizontal construction joints.
9 Placing the Fresh Concrete:
i) Particular care as explained below shall be taken while placing and compacting new concrete on or against the
old:
ii) Any dirt or dust from the surface of the hardened concrete shall be removed preferably with a compressed air
hose. As a safety precaution site operatives, must wear safety goggles. This cleaning shall be done before new
formwork is fixed because not only access be easier than but also dirt might otherwise stick to the new formwork.
iii) While fixing a new formwork, extra dirt is created which can be cleaned after removing a stop end – which will
make it easy to be swept or blown away.
10 Joint Sealing:
i) Where the structural component containing the joint is to be exposed to the external environment, the joint has to
be sealed to prevent ingress of water. For type and method of application refer to the contract specifications and/or
manufacturer’s instructions.
3. DOCUMENTATION
Following documentation and forms may be maintained as a minimum pending on Project Quality Plan requirements and
contract specification.
i) Contract and/or approved workshop drawings.
i) Manufacturer’s test certificates (in case of sealants and water bars).
iii) Request for Consultant’s consent/approval.
7
Permit to Work Requirements
Cutting down trees, disposal of materials
8
Review access
9
Review of Health Protection
Only Qualified and experienced staff will conduct the operation/ application taking into consideration all
safety measures in providing protective masks and ancillaries.
Dangers of cutting disk
Concrete cutting dust and flying concrete pieces
10
Risks
Environmental
Fumes
Dust
SMC JUNCTION UPGRADE
SJU005 Overhead and buried services
1
Scope of works/tasks
For any works affected by existing buried and overhead services
2
Risk Assessment
TBA
3
Labour requirements
4
Plant requirements
Depending on services
Depending on services
5
Identity of any Hazardous substances
N/A
6
Sequence of works/Methodology
6.1
An assessment will be made on each site to establish if there are overhead or buried services that may
create a hazard to operatives.
6.2
Should buried services be present, the following system of work, detailed within the company safety manual,
will be followed:i).
Obtain information from principal contractor.
ii).
Consult available drawings and Utility Services to obtain information as to the approximate location
of services and the feasibility of disconnecting them.
iii).
Use cable detection tools to obtain accurate information.
iv).
Mark service locations at ground level.
v).
Use hand-digging measures to expose live services.
Separate risk assessments/method statements will be prepared for operations of this nature which
are considered by the groundwork supervisor to contain special risks.
6.3
Should it become necessary to work near or under overhead lines, the following procedure will be adopted.
a) The Company will not use any plant with which it is possible to approach within 6 metres of any overhead cables
mounted on steel pylons unless: a.
A smaller clearance is permitted by the cable owners, confirmation of which must be
obtained in writing.
b.
The plant is fitted with physical height restrictors.
b) Any work directly under or adjacent to other electricity cables may be carried out whilst the lines are live, by
using a 3-ton mini-digger with a maximum boom height that cannot approach to within 2.5 metres of the cables.
c) All work near overhead electric cables will be carried out after due consideration of the Guidance Notes, a
copy of which will be held by the groundwork supervisor.
7
Permit to Work Requirements
Excavation permit
8
Review access
No access to unauthorised persons
9
Review of Health Protection
PPE
10
Risks
Damaging cables and live cable related injuries
SMC JUNCTION UPGRADE
SJU006 Manual Handling
1
Scope of works/tasks
For all handling of materials.
2
Risk Assessment
TBA
3
Labour requirements
4
Plant requirements
Depending on task
Depending on task
5
Identity of any Hazardous substances
n/a
6
Sequence of works/Methodology
6.1
All manual handling operations carried out by Company employees will be assessed by the groundworks
supervisor who will advise on the methods to be adopted. Safe manual handling techniques are provided in
the JR Goddard Contracting employee handbook.
6.2
Full procedures for assessing manual handling tasks and ensuring safety during manual handling operations
are contained within the Company safety manual. These will be adhered to at all times by our employees,
who are given free access to all health and safety information.
6.3
Kerbs, slabs and other heavy roadside goods will be handled using mechanical means wherever reasonably
practicable. In some instances, two-man lifting may be appropriate and this will be permitted only with the express
permission of the groundwork supervisor.
6.4
We do not expect to handle any items weighing more than 25 kg on the site.
If the occasion arises, the senior operative will determine a safe method of handling and specifically instruct
nominated individuals. In all instances, these general precautions will be taken:
i.
Deliveries and materials handling will be planned to minimise the extent of manual handling of
materials.
ii.
Routes by which materials have to be carried by hand will be constantly checked for, and kept free
of, obstructions.
iii.
Appropriate PPE will be worn to make sure that materials can be handled safely, e.g. gloves and
safety footwear.
iv.
Two or more operatives will carry larger or heavier items.
7
Permit to Work Requirements
n/a
8
Review access
No access for unauthorised persons allowed during handling of materials
9
Review of Health Protection
PPE
10
Risks
Risks associated with handling of materials e.g. back injuries
SMC JUNCTION UPGRADE
SJU007 General Site Safety -Traffic Management.
1
Scope of works/tasks
The management of traffic on the entire project is of critical importance
2
Risk Assessment
TBA
3
Labour requirements
4
Plant requirements
Traffic Cones
2 x Flagmen
Traffic signs
2 x Persons to erect safety signage
Flags
Whistles
5
Identity of any Hazardous substances
No hazardous substances identified.
6
Sequence of works/Methodology
Site investigation has to be carried out for safety precautions prior to commencement of the work, in order to display
relevant sign boards.
Flagmen would be deployed on both sides of the work to control the traffic whilst signage and
cones are being set up.
Men at work sign boards would be placed on the side of the road.
Signs restricting access to the project site are also to be erected.
25m away from men at work sign will be installed to protect employees working in trenches or on
roads.
Clear access roads for visitors will be demarcated.
Working area will be corded off with traffic cones to inform the oncoming traffic of the work.
After completion of the work, safety cones and barricade boars has to be removed accordingly.
7
Permit to Work Requirements
No permit required
8
Review access
Designated emergency escape routes
9
Review of Health Protection
In addition to following safety precaution has to be adopted to minimize accidents that can happen.
Safety helmets, traffic safety vests, boots, dust mask & gloves will be provided.
Warning sign boards would be displayed on either side of the works.
First aid facilities would be provided.
10
Risks
Setting up of signs and removal of signs are when the site is at most risk.
SMC JUNCTION UPGRADE
SJU008 Installation of traffic control signs/safety signs
1
Scope of works/tasks
Preventing people from getting injured and property damage whilst doing scaffold erection and dismantling.
following sequence of activity shall be followed to make sure safe execution of the task.
2
Risk Assessment
TBA
3
Labour requirements
4
Plant requirements
1 No Scaffolding Supervisor
Scaffolding sole plates.
6No.Scaffold erectors
Scaffolding Cross members.
Scaffolding Platforms.
Bracing Pins.
Delivery Truck.
5
Identity of any Hazardous substances
n/a
6
Sequence of works/Methodology
Pre-installation
i.
Check out plans for the positions of the signs
ii.
Inspect the poles and signs if they are correct and complying with standards.
iii.
Check for underground utilities.
Installation
i.
Set out areas to receive poles
ii.
Excavate the holes to depth as instructed by Engineer.
iii.
Install sign post and ensure it is plumb
iv.
Pour concrete for haunching
v.
Backfill the rest of the hole
vi.
Check again for plumpness
vii.
Fix sign on to the post
Permit to Work Requirements
7
n/a
8
Review access
No access to non-working employees
9
Review of Health Protection
PPE must be worn
10
Risk
Falling signs or post
The
SMC JUNCTION UPGRADE
Declaration
This method statement is signed by a responsible representative of GATE
CONTRACTORS., who agrees on behalf of the Company to comply with all
requirements of health and safety law, the entire contents of this method statement,
controls detailed in the risk assessment carried out for this project and any
instructions given by the principal contractor or appointed safety advisers.
Signed
..........................................................................
Name
.........................................................................
Date
.........................................................................