# How do you calculate shuttering quantity?

## How do you calculate shuttering quantity?

Shuttering area can be calculated by using two methods….Calculating Shuttering area:-

- Perimeter of Square : 4S (S = Length of Side)
- Perimeter of Rectangle : 2[L+B] (L=Length & B = Breadth)
- Perimeter of Circle : 2πr (r = Radius of circle)
- Area of Rectangle = Length x Breadth.
- Area of Square = Side x Side.

**How do you calculate concrete by thumb rule?**

The Thumb rule to estimate the shuttering required is 6 times the quantity of concrete or 2.4 times of the Plinth area….

Brickwork for 1m3 | Cement Qty in m3 | Cement Qty in Bags |
---|---|---|

230 mm Brickwork | 0.876m3 | 25.4 Bags |

115 mm Brickwork | 0.218m3 | 6.32 Bags |

### How do you calculate formwork quantity?

For simple square and rectangular forms, simply multiply length x width to know how much formwork you need. For a circular base, multiply the square of the radius by pi (πr²). For irregular shapes, break these down into simpler squares and rectangles and add up the total surface area.

**What is the rule of thumb in construction?**

Rules of thumb are approximations. When Reviewing Quantity Take-offs in an Estimate – Conversely, the steel quantity (pounds) per square foot of the building area could be checked to see if it falls within the thumb rule range for a building.

## Is there a thumb rule for shuttering quantity?

Yes there is a thumb rule for it. It surely depends on the structural elements to be concreted. For eg: take a beam of size 200*300 mm and length 5m. Then the total concrete required will be l*b*h i.e .2*.3*5 = 0.3 m3. Now let’s calculate it’s shuttering quantity. Suppose it’s not a plinth beam and a normal slab beam.

**What is the ratio of shuttering quantity and concrete?**

So now take the ratio of shuttering quantity and concrete which comes to be 10.67. This ratio can be used as a coefficient ( factor) to calculate the shuttering quantity when a concrete quantity is known for a similar kind of structural elements.

### How to calculate shuttering quantities for a beam?

For eg: take a beam of size 200*300 mm and length 5m. Then the total concrete required will be l*b*h i.e .2*.3*5 = 0.3 m3. Now let’s calculate it’s shuttering quantity.

**How many reuses are there for steel shutters?**

By the use of large-size panels, it is possible to affect saving in the labor cost of fixing and dismantling. The number of reuses are more as compared with timber shuttering. For estimation purposes, the number of reuses can be taken as 20 to 25. 3. Steel Formwork