How much rebar to put on a slab?

You can make a rough estimate by using thumb rule that about 80 kg of rebar is required per cum. of slab. So if slab size is say 10m x 10m x 0.2m. Concrete = 10 x 10 x 0.2 = 20 cum. Therefore, Rebar = 80 kg x 20 = 1600 kg = 1.6 MT.

When do you have to re-estimate the cost of a project?

In subsequent phases, costs are typically (re-)estimated if relevant new information and details become known or if changes to the project scope or timeline occur. One of the common reasons for re-estimating cost is, for instance, when the indicators of the project controlling suggest that the original budget baseline cannot be met.

When to use parametric or bottom up cost estimates?

Parametric and bottom-up estimates are usually the techniques that provide the most accurate cost projections. They are commonly used if the budget needs to be revisited and replaced with a new estimate at completion.

Which is the best method for estimating rebar?

Rebar Estimating Methodologies 1 Method 1 You can make a rough estimate by using thumb rule that about 80 kg of rebar is required per cum. of slab. So if… 2 Method 2 Another thumb rule can be used that 1% steel by volume of slab. So for above slab having volume = 20 cum. Steel… More

How are rebar spacing calculated in a spreadsheet?

The calculation is very easy for circular areas. Individual spreadsheet is arranged and formatted according to the following purposes :- Local Longitudinal Rebars, ASI- Total number of rebars. Distributed Longitudinal Rebars, ASI – spacing of rebars per metre of slab or footing.

Do you need a rebar reinforcement spreadsheet?

This spreadsheet is very useful for making design of reinforced concrete sections. The calculation is very easy for circular areas. Individual spreadsheet is arranged and formatted according to the following purposes :- Local Longitudinal Rebars, ASI- Total number of rebars.

You can make a rough estimate by using thumb rule that about 80 kg of rebar is required per cum. of slab. So if slab size is say 10m x 10m x 0.2m. Concrete = 10 x 10 x 0.2 = 20 cum. Therefore, Rebar = 80 kg x 20 = 1600 kg = 1.6 MT.