Rudrani Tidke
Cummins College of Engineering for Women (CCEW), Pune
Rudrani Tidke has created this Calculator and 100+ more calculators!
Mridul Sharma
Indian Institute of Information Technology (IIIT), Bhopal
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11 Other formulas that you can solve using the same Inputs

Spiral Reinforcement Yield Strength when Spiral Volume to Concrete Core Volume Ratio is Given
Yield strength of spiral reinforcement=0.45*((Gross area of column/Cross sectional area of column)-1)*(Compressive strength/Ratio of spiral to concrete core volume) GO
Concrete Compressive Strength when Total Allowable Axial Load is Given
Compressive strength=((Allowable Load/Gross area of column)-Allowable stress in vertical reinforcement*Area ratio of cross sectional area to gross area)/0.25 GO
Allowable Stress in Vertical Concrete Reinforcing when Total Allowable Axial Load is Given
Allowable stress in vertical reinforcement=(Allowable Load/Gross area of column-0.25*Compressive strength)/Area ratio of cross sectional area to gross area GO
Gross Cross-Sectional Area of Column when Total Allowable Axial Load is Given
Gross area of column=Allowable Load/(0.25*Compressive strength+Allowable stress in vertical reinforcement*Area ratio of cross sectional area to gross area) GO
Total Allowable Axial Load for Short Columns
Allowable Load=Gross area of column*(0.25*Compressive strength+Allowable stress in vertical reinforcement*Area ratio of cross sectional area to gross area) GO
Area of the Supporting Concrete when Nominal Bearing Strength is Given
Area of supporting concrete=Area of base plate*((Nominal bearing strength/(Compressive strength*0.85))^2) GO
Area of the Base Plate when Nominal Bearing Strength is Given
Area of base plate=Area of supporting concrete/((Nominal bearing strength/(Compressive strength*0.85))^2) GO
Nominal Bearing Strength of the Concrete
Nominal bearing strength=Compressive strength*0.85*sqrt(Area of supporting concrete/Area of base plate) GO
Required Area of a Base Plate for a Factored Load
Area of base plate=Factored Load/(0.85*Strength reduction factor*Compressive strength) GO
Factored Load when Base Plate Area is Given
Factored Load=Area of base plate*0.85*Strength reduction factor*Compressive strength GO
Allowable Bond Stress for Horizontal Tension Bars of Sizes and Deformations Conforming to ASTM A 408
Allowable bond stress=2.1*sqrt(Compressive strength) GO

Spiral Volume to Concrete-Core Volume Ratio Formula

Ratio of spiral to concrete core volume=0.45*((Gross area of column/Cross sectional area of column)-1)*(Compressive strength/Yield strength of spiral reinforcement)
p<sub>s</sub>=0.45*((A<sub>g</sub>/A<sub>c</sub>)-1)*(f'<sub>c</sub>/f<sub>y</sub>)
More formulas
Total Allowable Axial Load for Short Columns GO
Gross Cross-Sectional Area of Column when Total Allowable Axial Load is Given GO
Concrete Compressive Strength when Total Allowable Axial Load is Given GO
Allowable Stress in Vertical Concrete Reinforcing when Total Allowable Axial Load is Given GO
Spiral Reinforcement Yield Strength when Spiral Volume to Concrete Core Volume Ratio is Given GO

What is spiral reinforcement?

Spiral reinforcement is also termed as helical reinforcement which is used only in the circular column. The diameter of the reinforcement should not be less than 12 mm and maximum distance between the longitudinal bars should not be greater than 300 mm.

How to Calculate Spiral Volume to Concrete-Core Volume Ratio?

Spiral Volume to Concrete-Core Volume Ratio calculator uses Ratio of spiral to concrete core volume=0.45*((Gross area of column/Cross sectional area of column)-1)*(Compressive strength/Yield strength of spiral reinforcement) to calculate the Ratio of spiral to concrete core volume, The Spiral Volume to Concrete-Core Volume Ratio formula is defined as the spiral reinforcing to be used in a spirally reinforced column. Ratio of spiral to concrete core volume and is denoted by ps symbol.

How to calculate Spiral Volume to Concrete-Core Volume Ratio using this online calculator? To use this online calculator for Spiral Volume to Concrete-Core Volume Ratio, enter Gross area of column (Ag), Cross sectional area of column (Ac), Compressive strength (f'c) and Yield strength of spiral reinforcement (fy and hit the calculate button. Here is how the Spiral Volume to Concrete-Core Volume Ratio calculation can be explained with given input values -> -5.349082 = 0.45*((8E-06/1.2E-05)-1)*(784.531999999945/22).

FAQ

What is Spiral Volume to Concrete-Core Volume Ratio?
The Spiral Volume to Concrete-Core Volume Ratio formula is defined as the spiral reinforcing to be used in a spirally reinforced column and is represented as ps=0.45*((Ag/Ac)-1)*(f'c/fy or Ratio of spiral to concrete core volume=0.45*((Gross area of column/Cross sectional area of column)-1)*(Compressive strength/Yield strength of spiral reinforcement). Gross area of column is the total area enclosed by the column, Cross sectional area of column is the area of a two-dimensional shape that is obtained when a three-dimensional object, Compressive strength is is the capacity of a material or structure to withstand loads tending to reduce size, as opposed to which withstands loads tending to elongate and Yield strength of spiral reinforcement is yield strength of helical reinforcement which is used only in the circular column.
How to calculate Spiral Volume to Concrete-Core Volume Ratio?
The Spiral Volume to Concrete-Core Volume Ratio formula is defined as the spiral reinforcing to be used in a spirally reinforced column is calculated using Ratio of spiral to concrete core volume=0.45*((Gross area of column/Cross sectional area of column)-1)*(Compressive strength/Yield strength of spiral reinforcement). To calculate Spiral Volume to Concrete-Core Volume Ratio, you need Gross area of column (Ag), Cross sectional area of column (Ac), Compressive strength (f'c) and Yield strength of spiral reinforcement (fy. With our tool, you need to enter the respective value for Gross area of column, Cross sectional area of column, Compressive strength and Yield strength of spiral reinforcement and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
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