The work on a site for a low-rise building involves essential preparatory tasks to commence construction. These SITE PRELIMINARY WORKS ensure that everything is in place for the successful execution of the project.
Checking Plot Boundaries
SITE PRELIMINARY WORKS start with checking the plot boundaries as soon as the site is made available. This involves ensuring that the boundary stones are in place and that the dimensions match the site plans. Any discrepancies should be reconciled before any other work begins.
Site Preparation Work
As part of SITE PRELIMINARY WORKS, the following tasks are crucial:
- Land Clearing: Includes demolition of existing buildings and disposal or recycling of waste.
- Grading and Earthwork: The topsoil should be removed to a depth of 100-150 mm. The excavated topsoil is usually retained on-site for landscaping after construction. The site is graded by cutting and filling as needed, often using mechanical plants during SITE PRELIMINARY WORKS.
Stormwater Drainage and Erosion Control
Proper stormwater drainage is a critical aspect of SITE PRELIMINARY WORKS. The site should be graded to manage water flow effectively to prevent erosion, especially having removed the topsoil. If the water table is high, groundwater may need to be pumped out during foundation work.
Access Roads
Access roads and footpaths are essential for the movement of workers and materials as part of SITE PRELIMINARY WORKS. These must be well-planned with proper surfacing, curbs, and drainage. For long-duration sites with heavy traffic, temporary road surfaces may need to be asphalted.
Essential Services
During SITE PRELIMINARY WORKS, setting up necessary services such as water, electricity, and telecommunications is crucial:
- Water Supply: This can come from mains supply with storage facilities, or wells with appropriate pumping and storage systems.
- Electricity: Supplied from mains service or on-site generators.
- Fuel Storage: Proper, dedicated storage facilities are essential to avoid safety hazards.
- Communication: Landlines, mobile services, email, and fax facilities should be established for efficient communication.
Temporary Buildings
The construction site, as part of SITE PRELIMINARY WORKS, requires several temporary buildings:
- Site Office: Positioned in a noise- and dust-free area with complete office facilities.
- Worker’s Mess: Located away from work zones, providing space and amenities for the workforce including first aid and recreational facilities.
- Canteen: Also away from work areas, equipped with adequate cooking and dining facilities.
- Stores: Strategically placed for security and ease of access, covered for perishable materials, and open for bulk materials.
Material Storage Considerations
For efficiency during SITE PRELIMINARY WORKS, ensure material storage is appropriately organized:
- Cement: Stored under cover, near mixers.
- Aggregates, Timber, Steel: Positioned conveniently within crane radius or near hoists.
- Bricks and Blocks: Located for ease of delivery and close to hoists.
- Other Materials: Doors, windows, and fittings, are stored safely to avoid damage.
Plant and Equipment Setup
Proper placement of machinery and equipment is critical during SITE PRELIMINARY WORKS:
- Crane & Hoist: Positioned based on load capacity and work requirements.
- Mixer: Close to main work areas and aggregate storage.
- Generator: Isolated to ensure safety.
- Block Maker, Steel Bender, Power Saws: Positioned for operational efficiency.
Safety Measures
SITE PRELIMINARY WORKS also include setting up toilets and lavatories, hoarding, and fences. Ensure good drainage, adequate water supply, and easy maintenance for sanitary facilities. Security fences and safety signs are important to protect workers and the public