Self-Constructing or Constructing through a Contractor- Contractor and Excavation Tips
FINALISING A CONTRACTOR
1). Finalise the Rate of Construction with the Contractor at the onset. It can be settled either on Labour Rates or on With Material Basis. It is better to settle the rates as per Labour Rates provided you can yourself manage supply of good quality materials at competive rates.
2). Always get Quotes for 2-3 contractors and try to enter into a Descriptive Contract right at the beginning.
3). Arrange to make a Jhuggi or Temporary Shed for the Chawkidar & for safely keeping the Construction Materials . You could make this using bricks with mud mortar. It could be approx 8’ x 10’ size or more. Use 10’ x 3’ Tin sheets - 4 sheets are sufficient to cover the shed. A toilet for chawkidar & labour should be constructed separately.
4). For storage of water, either a tank should be constructed by masonary work or polyethylene, polypropylene tanks shold be arranged for.
5). Arrange for a Water connection & Electric temporary connection immediately for site. This can be applied for by writing to the Electricity Department and the Jal Board in your locality.
Digging of Basement & Foundation
1). Instead of manual labour, JCB earth excavation machines are used for cheaper & for expediting the work. Charges vary from Rs.750/-per 100 cft. to Rs.1000/-per 100 cft . for excavation & cartage of earth by trucks.
2). Check correctness of layout plan before you start your work
3). Permanent benchmark is constructed with its RL marked on it, taking zero RL of front road.
4). Reference pillars are made in brick work for all centre lines of walls or columns.
5).Once earth work reaches close to its final bottom level, be cautious to see that excess excavation is prevented.
6). If excess excavation does happen by mistake, then the same should be filled by lean concrete as specified by structural consultant. It shall never be filled with earth.
7). If excavation is done by JCB, leave bottom 300mm for manual excavation.
8). During excavation take care of existing Underground Electrical and Telephone Cables, Sewer Lines, Water Lines, Gas Pipe Lines etc.
9).After final digging of earth, Anti-Termite Process should be taken up by experts. This should be got done very attentively & in personal supervision. If not properly done, it results in permanent headache & expenses for all times to come.