How to use bar bending schedule

Every Quantity Surveyor Should know about the bar bending works and how to measure the reinforcement in Concrete. Actually why we use reinforcement in concrete? Rebars are used to help concrete withstand tension forces. Concrete is sufficiently strong to compression forces by nature, but tension forces can crack it.

Figure 01

We talked earlier about how to calculate the slab rib size as a basic calculation. If you have not read this you can find it at the link below.

👉👉Article on How to calculate slab rebar quantity.

👉👉Youtube video on How to calculate slab rebar quantity.

Rebar Numbering

According to this example,

A - number of bars ( It refers to the number of bars in a selected member)

B - Bar type ( “T or Y” used for “Tor steel” and “R or M” for "mild steel/ round steel", “ Y and M” less use nowadays)

C - diameter of the bar 

D - Bar Mark ( Give each bar a name. It helps to identify each bar)

E - Bar space ( center to center spacing of bars )

F - Location of the bar ( If you imaging a double net reinforcement work it has 4 bars, 2 numbers bar at the top and the other 2 are bottom, the 1st top bar naming as “T1” and 2nd one naming as “T2”. T1 is closer to the outer of the concrete. Likewise, bottom bars naming as “B2” and “B1”. B1 is closer to the outer of the concrete.)

Learn more watch this video - Rebar Numbering

Now you can read the bar naming and we will go to the bar schedule. Here I have attached a template for the bar bending schedule (Figure 1). You can use this schedule to calculate bar quantity.

Find the naming column as follows,

A - No (Numbering in ascending order)

B - Member (Write down your member to take for calculations)

C - Type and Size ( Bar Type and size of the bar)

D - Bar mark ( The name of the rebar in the drawing)

E - Number of members ( How many members are included in your calculations? )

F-Number of bars in each member (How many bars does one member include?)

G - Total number of bars ( You can get this by multiplying the E and F column)

H - Length of each bar (What is the actual length of the selected rebar?)

J - Total length ( You can get this by multiplying the G and H column)

K - Weight - kg/m (How many kilograms per meter?)

👉👉Article on - How to find bar weight

👉👉Youtube video on - Weight of the re-bar

L -  Total weight (You can get this by multiplying the J and K column)

M - Bar shape and remark ( You can draw a shape here and there is additional information you can write here)

This is how we add numbers to the bending schedule. If you have any problems with more details please share your thoughts in the comment section below.

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