How do I Calculate the Reinforcement Quantity for Stairs?

Reinforcement Quantity for Stairs: Reinforced Concrete Stairs Cross Section Reinforcement Detail This is a typical Reinforced Concrete Stairs Cross Section Reinforcement Detail, in CAD drawing that needs to be included alongside with every structural drawing that includes a concrete staircase to show correct reinforcement placement at the start, middle and landing part of the stairs. Purchased product contains : .dwg file .dxf file .pdf file fully customisable A MUST HAVE DETAIL One of the most useful structural details when designing for reinforced concrete.

This CAD dwg drawing for an RC staircase reinforcement detail will come handy and save you time almost in all projects. Essential typical structural detail for most staircase designs. DETAILED CAD DRAWING main top & bottom reinforcement transverse reinforcement middle landing support detailing non-reinforced tread step foundation starters reinforcement.

Reinforcement Quantity for Stairs

Let the width of stair be : B=1.5 m.

Let’s start with rebar labeled 8:

Center to center spacing(s)=150 mm

Length of bar(L)=2660 mm

Diameter of bar=12 mm

# of bar=B/s+1=1500/150+1=11B/s+1=1500/150+1=11

And bars labeled 6 to 9 follow the same calculation and their number is the same as 8 The only difference is their length.

Bar labeled 5:

C/c spacing(s)=250 mm

Length(L)=930 mm

# of bars=1500/230+1=7.52 81500/230+1=7.52 8

Now we have the number of bars, we will calculate the total length of each bar.

5: Total length(l)=# of bars*L=8*930mm=7440 mm

6: Total length=4.87m*11=53.56 m

And the calculation of other bars total length follows the same step.

Now that we have the total length of bars we can change the length into kg or ton, whichever is convinent.