Wednesday, February 26, 2014
Method Statement -Water Proofing
1.0 OBJECTIVE
OF PROCEDURE
This work method
statement covers the applying waterproofing for (your project's name).
This work method
statement provides information concerning method of application to ensure
compliance with contract requirements and drawings besides to perform safe
working environment and compliance with safety requirements.
2.0 DESCRIPTION
Estokote Grey is a cement based two component
polymer modified flexible waterproof coating. When used in reservoir or similar
structure, it is able to accommodate the bending moment of the structure when
it is filled with water. It fills and seals pores and voids of concrete or
Masonry Surfaces to prevent water infiltration.
It is compatible to concrete. The bonding agent
imparts excellent adhesion to concrete surfaces and forms part of the
structure.
Packing :
22.5 kg pack
Coverage :
11 m² per pack per two coats
3.0 EQUIPMENT
·
Brush
/ Roller
·
Sponge
·
Glove
·
Spray
4.0 WORK
METHODOLOGY
v Preparation
a.
The
surfaces, which are to receive Estokote Grey coating, must be free from oil,
grease, wax, dirt or loosely adhering particles and sharp edges or any other
form of foreign material, which might affect adhesion. The surface must be
roughened.
b.
Spalled
and deeply disintegrated concrete should be removed to sound concrete and
repaired with a suitable concrete repair mortar.
c.
Absorbent
surfaces have to be thoroughly saturated with water prior to application of
first coat of Estokote Grey. However, no loose standing water should be on the
surface before application.
v Mixing
a.
Mix
in a clean container by slowly adding the powder component to the liquid
component.
b.
Stirring
with slow speed mixer for 2 – 4 minutes to avoid lump formation.
c.
Use
mixture within 30 minutes.
d.
Do
not add water.
v Application
a.
Whilst
the substrate is still damp from saturation, apply the first coat.
b.
Leave
to harden for approximately 4 – 8 hours at temperatures above 20°C before
applying the second coat.
c.
Re-mixed
the Estokote Grey material remained in mixing vessel for every application of
Estokote Grey.
d.
For
floor application, to avoid risk of damage to the first coat, it is recommended
that the second coat be applied before 24 hours.
e.
If
the second coat is applied 12 hours or later, the first coat shall be slightly
pre-wetted, preferably using a fine spray.
f.
After
the second coat has been applied, better finishing can be achieved by rubbing
down with a soft, dry sponge.
g.
Floor
screeding inside the water trough to be done before waterproofing applied.
v Over
Coating
a.
Allow
the coating as above to be hardened for at least 3 days prior subsequence over
coating work.
v Protection
a.
The
freshly applied waterproof coating shall be protected from rain, dirt, oil
grease or other loose materials during its drying time.
b.
The
contractor should also take precautions to protect the Estokote Grey coating
from any mechanical damage during the construction of other trade of works.
v Curing
a.
Precaution
should be taken for applications done directly under sunlight and windy
conditions. It should also be protected from direct rain for at least 4 hours.
b.
The
finishing coat shall be cured for 3 – 5 days before other trade shall be
proceeded.
v Ponding
Test
a.
The
waterproof area has allowed to be cured for hours before ponding test was
carried out for 24 hours duration.
b.
If
the ponding test was failed, rectification work shall be carried out and after
the rectification work was done, the ponding test will be carried out.
5.0 SAFETY
& ENVIRONMENTAL PROGRAMME
5.1 Safety
- All workers shall provide with PPE (Personal
Protective Equipment) and shall be worn everytime they are enter the site.
- Gloves should be used when handling these
products.
- Eye protection should be worn. Any splashes to
the skin or eyes should be washed off. In the event of prolonged
irritation, seek medical advice.
- The Safety Supervisor / Safety Manager shall
ensure the workers understand the safety regulations and explain in detail
in particular hazards, where the workers are working and the precaution to
be taken their safety.
5.2 Environmental
- All workers shall educate on good environmental
management practices and well-disciplined to environment.
- The garbage bin shall be provided at the
working area and Supervisor shall ensure its must be collected regularly
and disposed-off at the approved dumpsite.
- Safety team shall ensure that no open burning
of construction or domestic wastes is practiced.
- All workers shall ensure that all tools and
equipment machinery are in good condition to avoid any oil leakage that
could harm to environment.
Method Statement -Turfing and Landscape
1. INTRODUCTION
This method statement covers the following work
activities associated with the requirement of the contract document for (your project's name).
It is intended to assist site personnel in carrying
out the performance of the activities. It also serves to demonstrate to the
client that we as the contractor understand the work scope and is capable of
undertaking it.
2. REFERENCES
2.1 Construction Drawing
2.2 Contract Specification
3. EQUIPMENT
3.1 Back Pusher
3.2 Water Pump and Pipe
3.3 Drum / Water Tank
3.4 Lorry
3.5 One Tonne Roller Compactor
4.0 GRASS / PLANT
The materials should come from approved sources by
the client/consultant. The Contractor shall arrange the nursery visit with the
client/consultant to get the approved material before delivered to the site.
4.1 Topsoil
Topsoil is the original surface layer or soil from
cultivated land or forest area. It does not generally include soil from swampy
area, padi field or tin mining areas.
It is usually a darker shade of brown, grey or red
than the subsoil that lies immediately beneath it. Topsoil tends to be friable
and show some degree of porosity. It should be free from subsoil, admixture of
stones, lumps, plants or roots and other extraneous matter. Topsoil shall not
deliver or used while in a muddy condition.
4.2 Axonupus
Compressus (Cow Grass)
The grass should come from approved sources. The
grass sod shall be cut and supplied at the approximate size 300mm square and
minimum thickness shall be 50mm with original soil adhering to the roots.
The sods shall be free from weeds and shall be
delivered to site and planted promptly to avoid desiccation.
5.0 METHOD
OF PLANTING
5.1
Site Preparation
The Main Contractor is required to grade the planting
area to finish grades and allowed for a smooth and uniform to the consultant
approval. The Main Contractor is required to roll, scarify, rake and level so
to obtain the even planting area. All loose stones, gravel, tree stumps in which
is not desirable is required to cart away from site to the approved dumping
area. To lay 50mm thick layer of approved black vegetable soil / top soil
before turf.
5.2
Close
Turfing
Turfing shall be carried out at all the terrace and
slope area as specified (refer to the construction drawing).
The grass sod used for close turfing shall be cut
and supplied at approximate size of 300mm square and minimum thickness 50mm
with original sod adhering to the roots. The sods shall be 50% pure comprised
of Axonupus Compressus. Close turfing shall consist of approximately 300mm
square turfing laid side by side with gaps not exceeding 30mm. If necessary,
each sod shall be stack with 200mm peg through the sod into the soil base, to
prevent soil erosion.
The sods shall be laid onto the surface of the
prepared ground with leaf turfs upwards, but jointed as closed as possible to
achieve a uniform cover. The turf shall be laid off planks working over turns
previously laid. The whole area should present an even smooth surface when
completed. Top dressing of the turf area shall be carried out immediately after
the turf is laid and monthly intervals thereafter.
5.3 Spot
Turfing
Turfing shall be carried out to all the flat area
as specified. The grass sod used for turfing shall be cut and supplied at
approximate size of 300mm square and minimum thickness 50mm with original sod
adhering to the roots.
The sods shall be 50% pure comprised of Axonupus
Compressus. Spot turfing shall consists of approximately 300mm square turfing
laid side by side with gaps on all sides of the turfing not exceeding 300mm. If
necessary, each sod shall be stack with 200mm peg through the sod into soil
base, to prevent soil erosion.
The sods shall be laid onto the surface of the
prepared ground with leaf turfs upwards, but jointed as closed as possible to
achieve a uniform cover. The turf shall be laid off planks working over turns
previously laid. The whole area should present an even smooth surface when
completed. Top dressing of the turf area shall be carried out immediately after
the turf is laid and monthly intervals thereafter.
5.4 Planting of Bucida Molineti
The plant shall be of approved species shown on
drawing and in healthy growing condition obtained from an approved source.
Black earth shall consist of fertile top soil obtained from an approved
source. Generally all pits for planting
of trees shall not be less than 750mm x 750mm deep, spaced at intervals as
shown in the drawings or approved by E.R. the bottom and side of pits shall
first be filled with layer of black earth before transplanting.
5.5 Watering
Watering shall be carried out immediately after the
completion of planting. The completed areas shall be lightly sprayed with water
and keep the areas moist.
5.6 Maintenance
Maintenance shall begin immediately after each
portion of turfed and planting area is installed and shall continue for the
period of maintenance as specified commencing from the date of acceptance.
Maintenance is including watering, fertilizing, spraying and mowing.
·
Watering (Cow Grass and Bucida Molineti)
Watering is required to soak and penetrate the soil
at a rate that will prevent saturation of the soil. The rate of application
shall be not less than 2.7 litre per square meter and on no account shall turf
be watered sparingly. During dry weather, shall be watered within 2 days of
laying and subsequently once a week.
·
Weeding (Cow Grass)
Keep all planting area free from weed and
undesirable grasses, by a method and by materials approved by client / E.R /
Consultant.
·
Mowing (Cow Grass)
Mowing on newly established turfed areas should be
delayed until it is obvious that the grass is growing strongly. The grass
should be cut when they are about 50mm – 75mm in height can be gradually
lowered at subsequent mowing until the height of 25mm to 40mm is achieved.
Remove the grass clipping during or immediately after mowing.
·
Top Dressing (Cow Grass)
After established turfed areas, determine the
evenness of the ground level and if any uneven ground level the top dressing
shall be applied. Mixed river sand and topsoil will be filled up to the uneven
area and also to any visible gap between sods.
·
Protection (Cow Grass)
Maintenance shall include all temporary protection
of all turfing areas from trespassing and damage at all times. If any portion
of turfed area is damaged, it shall be treated and replace.
·
Fertilizer Application (Cow Grass)
Fertilizer shall be Christmas Island Rock Phosphate
or its equivalent applies at the rate of 34gms per square meter with the
approval of Consultant after planted until 6 months.
NPK 15:15:15 shall be used after 3 months planted
at the rate of 100gms per square meter and continue the application every 3
months.
·
Fertilizer Application (Bucida Molineti)
Fertilizer shall be Christmas Island Rock Phosphate
or its equivalent applies at the rate of 0.3kg per square meter with the
approval of Consultant prior to planting, spread evenly in pit base.
NPK 15:15:15 shall be used at the rate of 200gms for
each plant every month for the first year period. For the next year after,
fertilizing shall be continued every 4 months. This fertilizer must be applied
around the plant, outside the canopy area.
·
Supporting Wood (Bucida Molineti)
Supporting wood shall be used to support the plant,
depend on the plant size.
·
Pruning (Bucida Molineti)
Pruning shall apply from surface area.
·
Control Diseases and Pests (Bucida Molineti)
Watering and cleaning the affected area at the
plant. Cut
and remove branches that were attacked by worms and insects.
5.7 Handing Over
Main Contractor shall arrange joint site inspection
for handing over after the end of the period maintenance. Main Contractor shall
be carried out rectification works for any defect works.
6.0 SAFETY
6.1 Safety
1) The
workers shall provide with PPE (Personal Protective Equipment) and shall be
worn all the time.
2) During
fertilizer work, the workers shall provide additional equipment such as safety goggles
and mouth and nose filters to avoid contact with fertilizer.
3) Site
safety member should be available at all the time.
6.2 Environmental
1)
The
Contractor shall ensure no open burning is allowed at the site.
2)
All
the waste shall be collected and disposed correctly.
3)
The
Contractor shall ensure there is no oil leakages from machinery (cutting
machine) which is could harm the environment.
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