5.4 Embankment construction under special condition
(a) Widening Existing Embankments
Where existing embankments are to be widened, adequate bonding between the old and the new embankment would be established by removing the top soil as described above and benching into the existing slope face in vertical and horizontal faces. Embankment would be built in successive layers as described above.
(b) Embankment construction over soft and marshy ground
Where embankment is to be constructed below the water table level, rock fill would be deposited in successive layers of a thickness determined by the size of the rock and depth of water. Each layer would be constructed starting at one end of the embankment under construction and placing the rock by means of a bull dozer in such a manner that the large rock would be placed on geofabric. The maximum size of the rock shall be 250mm and the rock would be blinded with a layer of 40mm graded aggregate.
Where embankment filling is to be constructed over wet or soft ground that displays excessive movement under normal compaction equipments and haulage trucks, this layer would be constructed over geofabric which has been laid out and pegged by end dumping and spreading successive loads of suitable rock fill or granular material. These layers would be compacted by using a suitable compacting devise with out over-stressing the road bed.
6.0 Safety Plan
6.1 Safety Management Action Plan
In order to minimize the occurrence of site accident in case of the construction of embankments, the provision of a safe working environment for workers to work is essential. Our company endeavors to make a zero accident record in areas where the embankment construction is done. In addition to the above, the following safety precaution must also be implemented in achieving the minimization of site accidents while embankment construction.
6.1.1 Site Staff and Labor
• Personal Protective Equipment (PPE) such as safety boots and helmets would be provided with workers all tools, plant, equipment. Alcoholic drinks and other substances, which may impair judgment, would be prohibited from the Site.
• Fall Prevention Measures: Investigation would be taken place to identify falling hazards and preventive measures would be taken immediately.
• Signalmen would be deployed if the work spaces disturb traffic flow in the main road. A traffic supervisor would also be deployed to take responsibility over the traffic control.
• First Aid Facilities: First aid facilities such as a first aid box would be made available for in case of minor injury treatment.
6.1.2 Safety Control
Safety control and verifications include the periodic verification of a clean and tidy working environment, of adequate safety equipment and safety belts, of adequate first-aid facilities etc, as well as the verification of other items particular to the steps detailed in this method statement.
a. All workers would be educated in the use of excavators, motor graders, such as the excavator arm & bucket distance and buffer zone in order to prevent from injuries.
b. Signalmen would be deployed in order to alert workers and traffic on the road.
c. Operators would be thoroughly instructed to prevent pushing soil loads into the main road area.
d. Roots would be cut and removed using chain saw and backhoe within the barricaded area. When a dump truck is positioned for loading debris signalmen would be deployed on either side to control traffic.
e. Road surface would be cleaned and washed in order to prevent from dusty conditions.
7.0 ENVIRONMENTAL CONTROL
a. All debris & residual spoil material including any left earth would be disposed only at locations approved by the Engineer
b. Effort would be made to clean the affected road surface, i.e., brushed off, and washed off to prevent from dust pollution.
c. Top soil would be collected before cutting the slope in order to plant vegetation after completion of required area is being cut.
d. Local Environmental rules would be followed in the slope cutting
e. Every effort would be made to ensure no environmental pollution complaints from residents of this area with regard to air and water pollution.
f. Environmental complaints would be registered in the complaint register as specified in the Environmental Implementation Action Plan.
g. The debris and spoil would be disposed in such a manner that waterways and drainage path are not blocked.
h. Noise pollution prevention effort would be made to minimize construction noise levels. Vehicles and equipments would be maintained in good condition in order to prevent from noise pollution.
8.0 Social Aspect
a. Workers involved in construction in this area would be educated with regard to HIV/AIDS prevention. Separate HIV/AIDS prevention education program would be conducted along with Medical Officer of Health / Public Health Inspector.
b. Relevant authorities would be educated with regard to project affected people prior to start work in these areas. Leaflets and other sources of education material with regard to construction shall be distributed among the project affected people.
c. Every effort would be made to minimize the disturbance from the project.
d. If not convince to an affected person with regard to disturbances every effort would be made to direct them to Residents Engineer for amicable settlement.