The Factors affecting on Rate Analysis is many. and it is depend upon the varies conditions.Factors affecting on Rate Analysis is listed below,
This is the main Factors affecting on Rate Analysis. Specification of item is always matter in on rate and rate analysis. They may like dimensions (thickness, length), color, brand or trade of material, raw materials, casting procedure, method of construction, plants and equipment has great impact on price.
Eg. For masonry, conventional clay brick is replaced with the fly ash brick or RCC blocks. This chance in brick always has great impact on rate. As material, labour changes according to specification.
Rate of material is different for various types of quality of materials. The different quality of materials is used for the different kinds of activity on site.
For example, rate for first class brick is more than the second class bricks. The first class bricks is always used in load carrying masonary specially exterior wall of building. Second class bricks can be used in masonary of compound walls.
Depending on the proportion of materials, the quantity for raw materials will changes and rate for item of work will changes.
For example, RCC in C:M 1:4 and C:M 1:5 always has different rate.
This is very important concept for rate analysis. Depending on method of construction the rate will varies as rate also varies with the different kinds of materials , tool & plant is used for different method of construction. .
For example, using RMC concrete for construction rather than conventional manually concrete. Or casting building using Pre-fabricated elements.
The daily wages of labourer varies according to their skills, types, speed of work. some of the major factors affecting om daily wages are listed below,
- With different categories
- With localities
- As per outputs
According to execution of any activity, the quantity of labour required is calculated. Then the types of labour like skilled, semi- skilled, unskilled is calculated. Then the rate per labourer will be decided according to their activity and type.
6. Tools and Plants:
Depending on method of construction, the requirement for tools and plants will be varying. The rate for varies tools and plants also varies according to use. In every type of construction work different types of tools and plants are required. In special cases, where special type of tool and equipment is used, the rate of construction will be high.
7. Overheads and profits:
Overhead charges mainly includes expenses of office, labour welfare, material testing, water supply, electrification, depreciation amount etc. and profit is the contractors profit for the construction. Usually overheads and profits combinely considered from 10% to 20% depending upon the scale of the project.
The following are the minor factors affecting on the rate analysis,
- Location of the project
- The range of lead and lift require for deposition of materials
- Transportation charges if materials are not easily available in near by locality.
- Percentage charge for overheads
- Possibility of theft of losses
- Range of profit, Availability of water connection
- Protection of Work
- Rate of materials for item per unit of work up to worksite