1. Describe in details with your own illustration the process of site mobilization.
The major construction activities involve in a building construction are preconstruction planning and mobilization, preparation of the site, slurry mixing and hydration, excavation of site , backfill preparation, placement of backfill, cleanup of the site, and demobilization.
The first major construction activity is to make an assessment of the site and to mobilize for construction. The contractor determines the equipment that will needed, amounts of material, and facilities that may be required. Plans are made for mobilizing personnel and moving equipment to the site. A preconstruction meeting between the designer, contractor and engineer is recommended. In this meeting, materials, construction procedures and all other aspect are discussed.
After studying the contract, specification and job of the site, process of mobilization shall include:
a. All activities and associated costs for transportation of contractor's personnel, equipment, and operating supplies to the site, establishment of offices, buildings, and other necessary general facilities for the contractor's operations at the site.
b. Transportation of personnel and equipment to and from the site.
c. Establishment and disassembly/removal of offices, buildings, storage facilities, sanitary facilities, utility service, and other necessary facilities at the site not covered in specific bid items.
d. Establishment of ingress-egress routes not covered in specific bid items.
e. Housing for men and their families, or barracks for single men.
f. Field kitchen may be procured.
g. Premiums paid for performance and payment bonds, including coinsurance and reinsurance agreements.
The scope of mobilization for the field site support also includes communications, transportation, power, heavy equipment, test support equipment, workshops, fire protection, and water.
· Communication for field site support may as simple as one telephone or as complex as satellite relay network in order to provide a means of transmitting intelligence that will meet the requirements of the site. Site should have sufficient lines and extensions at the required contact points so that communication will not become jammed.
· Adequate transportation are required to move hardware, mail, and personnel to, from and around the site. Plans will have to be made to control vehicles usage.
· Power supply is also needed to supply site electricity. Competent mechanics and electricians are needed to operate, maintain, and overhaul the equipment.
· Water system can either be brought in by truck, pumped directly from nearby river. Plans must be made to procure, install, operate and maintain equipment, to train personnel and to treat the water so that it will not be harmful to personnel or equipment.
· Test support equipment such as telescopes, theodolites, transits, and high -speed camera. Utilization of electromagnetic equipment, the particular radio frequencies must be cleared with the range frequency officer or with the local office.
· Information on the use of heavy equipment such as tractors, bulldozers, cranes, and road scrapers and on the site environment should be collected. Maintenance in the use of heavy equipment is also necessary.
· Workshops such as woodworking shop and metal shop are required. It can be either separate shops or single with the capability to handle all work, depending on the demand for the facility and its size.
· Fire protection and first aid facilities should be acquired. Firefighting equipment should be adequate to meet any site emergency.
· Providing on-site sanitary facilities and potable water facilities
· Installing temporary construction power, wiring, and lighting facilities.
· Providing field office trailers for the CONTRACTOR and the ENGINEER, complete with all specified furnishings, office equipment, communications facilities, fax machines, computers, and utility services.
If additional mobilization activities and costs are required during the performance of the contract as a result of changed, deleted, or added items of work for which the contractor is entitled to an adjustment in contract price, compensation for such costs will be included in the price adjustment for the item or items of work changed or added.
Payment will be made as the work proceeds, after presentation of paid invoices or documentation of direct costs by the contractor showing specific mobilization costs and supporting evidence of the charges of suppliers, subcontractors, and others. When the total of such payments is less than the lump sum contract price, the balance remaining will be included in the final contract payment. Payment of the lump sum contract price for mobilization will constitute full compensation for completion of the work. Payment will not be made under this item for the purchase costs of materials having a residual value, the purchase costs of materials to be incorporated in the project, or the purchase costs of operating supplies.
2. Discuss the project site layout plan in relation to site efficiency (material, labour, machineries)
The choice of good construction site layout is inherently difficult. It is recognize that a project layout plan is efficient has a significant impact on cost, timelineness, operational efficiency and quality of construction, which manifest on the larger and more remote projects.
The said site is said to be quite efficiency as:
· It avoids the double handling of material by having different material storage area.
· It has proper storage arrangements to ensure that materials are a correct type, quantities and available when required.
· The staffs only need minimum walking distance between working, resting and storage area.
· The site avoids loss by thief and vandalism by providing security such as having a security booth and hoarding around the whole site.
· It also minimize on-site traffic congestion by having adequate parking facilities for staff and machineries by having staff car park and machineries parking area .It also have circle room for the delivery vehicles.
· Open sump is also provided to clean the dirt on the tyres of the truck or vehicles leaving the site.
For the site efficiency:
· Movement of the machineries and vehicles is very important. Proper site access has been provided for vehicles delivering materials to site with minimum delay and difficulties. A proper road surfaces and turning circle has been provided for heavy vehicles.
· Control on site is also very important. Overall supervision of the movement of material, labour and machineries on site are supervised. Site has been zoned into storage, accommodation and other any specific activities.
· Accommodation is also needed. There are sufficient room for meeting and storage of documents and utilities.
3. Describe any improvement methods in improving the said site.
The layout of a demolition site has to be considered and organized carefully to allow efficient movement and segregation of materials. Below are some suggestions to improve the said site:
· The construction space available for storing and crushing material adjacent to some faculty. This may prove unacceptable due to the increase in noise and dust generated. It may be possible, however, to find solutions by retaining certain walls, etc to act as noise and dust screens.
· The original mobile site office was too large for the number of staff employed on site so can be replaced with a smaller, more modern mobile site office. Similarly, the car parking spaces was excessive for the number of staff employed at the site, particularly as not all staff drive to work.
· Installation of lighting and CCTV improve security and safety at the site. The lighting has been installed so as to illuminate the working area but not spill outside of the site boundary.
· The staff car park and site office should be located nearer to the access and exit in order that vehicles and personnel may be readily observed entering the site.
· Construction Planning, Programming & Control Second Edition publish by Blackwell, written by Brian Cooke & Peter Williams.
· Construction Management (Principles and Practice) written by Alan Griffith and Paul Watson