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Site Setup for Effective Rehabilitation Process

Question:

Discuss About The Report Rehabilitation Of Doncaster Quarry?

This report paper focuses on the setting up and controlling the construction work at the Doncaster Quarry Site in an effort of converting the site to become a safe community park. Some of the activities which will be undertaken by the council on the site include dewatering of hole, allocation of equipment and manning of earthwork operation establishing haul roads, stabilizing rock faces, and site setup which involves signage, boundary fences, gate house, and amenities. The dimensions of the holes which are present in the quarry is 35 by 85 by 65 meters and it is supposed to be filled and the ground levelled. The figure below shows the Doncaster Quarry Site which is supposed to be rehabilitated return the site into a safe community park:

The following are some of the activities which should be undertaken on the Doncaster Quarry Site during the process of converting it into safe community park:

The first thing to be done ounce approvals and permissions for the rehabilitation process have been finalized is to set up the site. It is critical to prepare the site for effective and smooth rehabilitation process to ensure that the workers, construction equipment, and general public are kept safe (Ballast, 2014). It is important to critically evaluate the site and create boundaries to prevent an authorized access into the site. The evaluation of the site will determine if there is any amenities which were previously being used in the quarry for the process of mining (Buckshon, 2012).

The amenities which should be critically evaluated include pre-existing utilities such as electricity supply and water supply channels. In case these channels are present, then they should be safely removed from the site to prevent injuries and inconveniences on the general public which may be using the supply channels. The products which will be used in the initial set up of the site include sport marking spray, steel caps, and barrier mesh. There is also a need to setting up a phone line on the site as a preliminary site setup since there will be need to communicate with the outside world on updated contracts and plans (Chen, 2016).

There is also a need of putting in place a boundary fence as well as mount signs (signage). There is need in ensuring that the signage is clear enough and visible from the outside the quarry site. After the boundaries of the site have been determined, there is need of erecting a fence to create a physical barrier between the construction site and the external area. This will ensure safety of the passers-by, site visitors, and site workers. The setting up of boundary fence will be followed by a gate house which will be the only exit and entry point to or from the site (Chitkara, 2011).

Setting Up Site Amenities and Establishing Haul Roads

The fence is considered strongly around the quarry site when the site is near recreational area or parks, near school or road followed by children on their way to school. The perimeter of the fence should be enough for its intended purpose by noting down that it is difficult to access from the underneath, difficult to climb, suitable height to prevent entry, stable and ability to withstand wind loads anticipated (Cornick, 2013).

The mount signs which is located on the exterior section of the site should contain detailed information of the instructions to the visitors of the site, contact information, personal protective equipment which should be put on while in the site, and company name. There is also a need of setting up the site amenities which will be used the construction workers, there amenities will include storage areas, kitchen, temporary toilet, office stationery. This is important since it will limit the movement of the workers from the site to the outside region in such of basic commodities (Kamara, 2015).

The rock stabilization can be done through pulverizing the barrow material or rock, combining with a chemical additive, and compacting the mixture thoroughly. The stabilization of rock is important since the site was previously a quarry and there is high chances that the place is filled with protruding rocks which need to be stabilized during the process of levelling the ground (Loosemore, 2011). The figure below shows some of the equipment which are used in the process of rock stabilization.

The chemical additives which is added to the rock can be inform of sodium chloride, lime, and Portland cement. For the rock stabilization by the use of cement, nearly all types of soils can be used such as fine-grained silts, clays or gravel. Usually the granular materials are utilized since they readily mix and are pulverized. The different types of soil stabilizers in figure 3 above are used since they are four-wheel drive with heavy weights hence can easily crush the rocks when passes on top of a rocky area (Ofori, 2010).

The passing grid roller and towed sheepsfoot roller will crash the rocks into small particles making the area level. In case of huge rocks, then additive chemicals will be very effective since they react with the chemical components of the rocks leading to crashing. This chemical additives include sodium chloride and lime (Organization, 2012). After the huge rocks have been broken down by chemical additives, then the rollers will then be passed over them to crush the remaining particles into minute sizes that can be assumed to be part of the natural soil.

Rock Stabilization and Allocation of Equipment

A haul road is a temporary road constructed to enable the movements of materials, equipment, and workers during the period of rehabilitation of the quarry site. In this quarry site, there is need of constructing a haul road to facilitate the movement of workers, equipment, and materials to and from the site since the region occupied by the quarry is very ragged making it difficult for the any kind of movement within the site to be possible. Haul road is normally done with low expertise, leading to maintaining the roads to be more expensive and high cost of operation of vehicles (Reeves, 2013). The low cost of construction of haul roads is as a result of the roads being constructed only on temporary basis.

The savings from maintenance, construction, and design of haul roads is very significant since they road are meant to serve for a short duration of time during the period of rehabilitation of the quarry. The results of the deterioration of haul roads are settlement, rutting, and potholes. Corrugation and frost heave are also common is majority of these roads (SETAC-Europe, 2013). The deterioration of the haul roads are usually caused by poor compaction, vehicles spillage, spring breakup, heavy traffic volume, and precipitation or runoff. The haul roads have been described to be environmentally unfriendly, financially demanding, and time consuming.

 Before the construction of the haul roads, the step which should be done include clearing the zone in which the haul roads is to be constructed followed by stripping a length of 0.3m of the topsoil. There is also the use of rollers which are shown in figure 3 above for the detection of spots that are soft. This step is followed by the removal of backfilling and soft spots with materials which are consolidated. The rollers will again be used to further soften the road (Searle, 2011). After these steps have been performed, the road will then be ready to the placements of materials. The construction of haul roads entails three different placement of layers namely running layer, base layer, and sub-layer.

The road sub-base is designed by placing the coarse which are not greater 100mm. The layer of thickness 500mm will also be placed which is characterized by rough shaping to fit the final surface for driving. The sub-base will then be compacted by machinery with heavy tires. The road base of the haul road is built by applying materials with dimension of 50mm then placing a layer of 300mm thickness. The final drainage system and road alignment will then be incorporated. Compacting the watery road materials with machinery which have heavy wheels (Thorpe, 2016).

Conclusion

Allocation of equipment and manning of earthwork operations is a critical activity during the rehabilitation of quarry. Allocation of equipment involves proper positioning if equipment in the work site. Equipment should be allocated depending on its nature and work. There are some equipment which are affected by the direct atmospheric condition especially those who are being oiled and greased. The allocation of the equipment is important since it reduces the time spend in looking of the equipment on the site especially after it have been misplaced (Westfall, 2015).

For proper allocation of the equipment, it is important to pick the equipment and return it after using it at the exactly the same spot in which it was found. This will make it easier for another person who will wish to look for the same equipment. Allocation of the equipment also involves ensuing that the equipment is in the right condition after using it and repairing it in case it is damaged. Huge machineries should be positioned at a particular spot away from direct atmospheric conditions such as rainfall and direct sunlight. These machineries include tractors, Lorries, and rollers (Whitney, 2013).

There should be proper records of the movement of the equipment within the site and at any particular time, the person using the equipment should be recorded and the time which the equipment is supposed to be returned. The quantity of a number of a particular equipment should be regulated such that only a correct quantity of that equipment should be at the site to prevent overcrowding of equipment in the site hence giving more space to enable movement of workers (Ofori, 2010). The allocating of the equipment can also be done by allocating the equipment performing a particular function together with the correct labelling of the functions done by the group.

The earthwork operations involves the disturbance of the earth or soil through the means such as construction, dumping of soil, stockpiling, land rehabilitation, infilling, drilling, tunnelling, and excavation. This activity of earthwork is critical since the hole with the dimension of 35 by 85 by 65 meters will be filled through the process of infilling (Searle, 2011). Drilling process will be done so as to break some hard rocks in the site during the process of levelling. The holes left by the quarry will be filled through land rehabilitation and infilling where soil will be transported from areas where it is abundant and then filled in the holes.

Levelling which is also a form of earthwork operation, will be done after all the rocks have been stabilized and the holes in the site filled. The levelling should be done by the use of rollers which improves the density of the soil structure through making the oil to be more compact and application of weights on top of the soil. The extra soil which will not be needed can be damped in another location far from the site for proper soil stabilization (Searle, 2011).  

Dewatering of holes is a process whereby water is pumped continuously so as to suppress to water table artificially. This activity is very significant since there is need of lowering the water table in the quarry site during the process of rehabilitation which will improve the dryness of the soil at the site hence making the site to be good for construction activities. The water is removed from the wells through artificially pumping by the use of pump. The constructor should first locate the region where the water table is believed to be higher than normally before digging deep until water table is reached (Ballast, 2014).

This will be followed by drilling the water from the well until the correct water table is reached. The strength of the structures which will be constructed depends on the soil structure of the site which is affected by the water table of the region. A watery soil is dangerous in construction since it is a weak soil to erect structures on. It will only take a little force and the structures erected from such a soil structure to fall (Kamara, 2015).

Conclusion

The report paper above focuses on the setting up and controlling the construction work at the Doncaster Quarry Site in an effort of converting the site to become a safe community park. Some of the activities discussed above which will be undertaken by the council on the site include dewatering of hole, allocation of equipment and manning of earthwork operation establishing haul roads, stabilizing rock faces, and site setup which involves signage, boundary fences, gate house, and amenities.

References

Ballast, D. K., 2014. Architect's Handbook of Construction Detailing. Michigan: John Wiley & Sons.

Buckshon, M., 2012. Construction Marketing Ideas: Practical Strategies and Resources to Attract and Retain Profitable Clients for Your Architectural, Engineering Or Construction Business. Chicago: Mark Buckshon.

Chen, G., 2016. Building Construction: Project Management, Construction Administration, Drawings, Specs, Detailing Tips, Schedules, Checklists and Secrets Others Don?t Tell You ; (architectural Practice Simplified). Moscow: ArchiteG, Inc.

Chitkara, K. K., 2011. Construction Project Management. Toledo: Tata McGraw-Hill Education.

Cornick, T., 2013. Construction Project Teams: Making Them Work Profitably. Sidney: Thomas Telford.

Hirst, T., 2015. Electric Guitar Construction. Toledo: Hal Leonard Corporation.

Kamara, J. M., 2015. Capturing Client Requirements in Construction Projects. New York: Thomas Telford.

Loosemore, M., 2011. Essentials of Construction Project Management. London: UNSW Press.

Ofori, G., 2010. The Construction Industry: Aspects of Its Economics and Management. Toledo: NUS Press.

Organization, U. N. I. D., 2012. Appropriate industrial technology for construction and building materials. New York: United Nations.

Reeves, G. M., 2013. Clay Materials Used in Construction. Paris: Geological Society of London.

Searle, J. R., 2011. The Construction of Social Reality. Colorado: Simon and Schuster.

SETAC-Europe, 2013. Life-cycle Assessment in Building and Construction: A State-of-the-art Report. Michigan: SETAC.

Thorpe, B., 2016. Quality Management in Construction. Moscow: Gower Publishing.

Westfall, R. S., 2015. The Construction of Modern Science: Mechanisms and Mechanics. Toledo: Cambridge University Press.

Whitney, C. S., 2013. Bridges of the World: Their Design and Construction. Colorado: Courier Corpor

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