Sign Up to The Constructor to ask questions, answer questions, write articles, and connect with other people. VIP members get additional benefits.

Login to The Constructor to ask questions, answer people’s questions, write articles & connect with other people. VIP members get additional benefits.

Free Signup or Login to continue Reading...

Sorry, you do not have permission to ask a question, You must login to ask question. Become VIP Member

Free Signup or Login to continue Reading...

Get More Features, Sign Up Now. Become VIP Member

Rate analysis for cement mortar requires estimation of materials for cement mortar, i.e. quantity of cement and sand required for 1m3 for various proportions, i.e., CM 1:2, 1:4, 1:6, 1:8 etc. So, let us first calculate quantity of cement and sand required for 1m3 of cement mortar.

For 1m3 of wet cement mortar, 1.3m3 of cement and sand is required, due to presence of voids in sand in dry state. So, cement and sand quantity is calculated for 1.3m3 of cement mortar.

Estimation of Materials for Cement Mortar:

Steps for calculation of quantity of cement and sand for cement mortar:

Consider, we want to calculate quantity of cement and sand for CM 1:X, where, 1 is proportion of cement and X is proportion of sand. Then, quantity of cement shall be calculated as:

Quantity of cement =

Above formula gives quantity in volume. To calculate the quantity of cement in number of bags, we have to divide it by volume of cement of one bags. The volume of one bag of cement is 0.0347 m3.

Therefore, number of bags of cement =

Quantity of sand =

For example, for a proportion of CM 1:4,

Quantity of cement in bags = =7.492 bags

Quantity of sand = = 1.04 m3 of sand.

Estimation of Labour and Tools for cement mortar:

For 1m3 of cement mortar, semi-skilled labour is required for 0.27 days for mixing, unskilled labour for 0.26 for carrying of cement, sand and water. Hire charges for mechanical mixer is taken in lumpsum of can be taken as 0.27 days for mixing 1cum of mortar.

Rate Analysis of cement mortar:

Rate analysis of cement mortar requires the rate of cement and sand multiplied with their respective quantity. Cost of labour and tools and tackles for the cement mortar is also calculated. Cost of cement, sand, labour and tools depend on local availability and local rates.

When, quantity of cement, sand, labour and tools are multiplied by its rates, and a contractors profit of 10-20% is assumed, the total sum of the amount is taken as the cost of 1m3 of cement mortar, which is shown in the file below.

Rate Analysis of Civil Works -Elements and Requirements

Rate Analysis of Plastering with Cement Mortar -Quantity Calculation

Quantity of Cement & Sand Calculation in Mortar

Analysis of Rates for Civil Engineering Works

Rate Analysis for Brick Masonry

Quantity & Rate Analysis for Reinforced Concrete

Concrete Slump Variations at Site: How to Deal with it?

1. Cft= cubic feet,

Cum = Cubic meter

1 Cum = 35.38 cft.

Mr.Ahmed, to calculate BBS (Bar Bending Schedule) you should need to have structural drawings of the particular structure. For any structure we start with foundation, we have to calculate the steel required for footing mat and for columns, the reinforcement bars in the columns should be of varying lengths to avoid overlaps of steel at a single place. What you are particularly looking in BBS.

Mr.Vn.Reddy for 9" wall and 41/2" wall we can't calculate the rates on lumpsum basis as we have to know the length and height of the wall. Always the cost of walls will be in CFT or CUM.
First we have to calculate the cost of materials like Cement, Fine aggregate, Bricks and Water reducing agents. Then labour cost involved in construction of the walls. Apart from the above costs we have to add lifting cost of materials to that particular floor and scaffolding erection costs and contractors profit.

• Share
2. Please write on complete bar bending schedule in details…
thanks alot

• Share
3. how 2 caluclate Lupus um calculations like 9" brick wall cost , Lupus um cost of slab 1st 4" thick

• Share
4. i suggest people should expose themselves to real site experiences and come up with a perfect blend, with design, etc. so that there will be seamless flow

• Share
5. let's dwell on excavation a bit. the type of soil in the leventis site for the factory, had very different type of soil strata. if you finish excating some meters away, you will meet weathered rocky grounds. after a while, you will meet sand. after a while, you will meet clayey soil. we covered over 200 meters length and met different soil types. the external trenches were excavated with machines but the internal trenches also carrying underground beams, were excavated with raw labour. those who worked in rocky areas had much more challenges. i'd like contributors to give us a preview of what labour will be, for different soils.

• Share
6. what are you abbreviating with cft? pls explain. anyway, thanks for your contribution

• Share