Mridul Sharma
Indian Institute of Information Technology (IIIT), Bhopal
Mridul Sharma has created this Calculator and 100+ more calculators!
M Naveen
National Institute of Technology (NIT), Warangal
M Naveen has verified this Calculator and 100+ more calculators!

11 Other formulas that you can solve using the same Inputs

fundamental period when seismic response coefficient is given
fundamental period=(1.2*seismic coefficient for short period structures/(response modification factor*seismic response coefficient))^(3/2) GO
seismic coefficient for short period structures
seismic coefficient for short period structures=(seismic response coefficient*(response modification factor*fundamental period^(2/3)))/1.2 GO
seismic response coefficient when fundamental period is known
seismic response coefficient=1.2*seismic coefficient for short period structures/(response modification factor*fundamental period^(2/3)) GO
seismic coefficient for velocity dependent structures
seismic coefficient for velocity dependent=seismic response coefficient*response modification factor /2.5 GO
response modification factor by velocity dependent structures
response modification factor=2.5*seismic coefficient for velocity dependent/seismic response coefficient GO
total lateral force acting in the direction of each of the principal axes
lateral force=seismic response coefficient*total dead load GO
total dead load when base shear is given
total dead load=lateral force/seismic response coefficient GO
building height for steel frames when fundamental period is known
height of building=(fundamental period/0.035)^(4/3) GO
building height for steel frames when fundamental period is known
height of building=(fundamental period/0.035)^(4/3) GO
building height for steel eccentrically braced frames when fundamental period is known
height of building=(fundamental period/0.03)^(4/3) GO
building height for reinforced concrete frames when fundamental period is known
height of building=(fundamental period/0.03)^(4/3) GO

1 Other formulas that calculate the same Output

response modification factor by velocity dependent structures
response modification factor=2.5*seismic coefficient for velocity dependent/seismic response coefficient GO

response modification factor Formula

response modification factor=1.2*seismic coefficient for short period structures/(seismic response coefficient*fundamental period^(2/3))
R=1.2*C<sub>v</sub>/(C<sub>s</sub>*T^(2/3))
More formulas
total lateral force acting in the direction of each of the principal axes GO
seismic response coefficient when base shear is given GO
total dead load when base shear is given GO
seismic response coefficient when fundamental period is known GO
seismic coefficient for short period structures GO
fundamental period when seismic response coefficient is given GO
seismic response coefficient when seismic coefficient for velocity dependent structures is known GO
seismic coefficient for velocity dependent structures GO
response modification factor by velocity dependent structures GO
fundamental period for steel frames GO
fundamental period for reinforced concrete frames GO
Fundamental Period for Steel Eccentrically Braced Frames GO
fundamental period for other buildings GO
building height for steel frames when fundamental period is known GO
building height for steel frames when fundamental period is known GO
building height for reinforced concrete frames when fundamental period is known GO
building height for steel eccentrically braced frames when fundamental period is known GO
building height for other buildings when fundamental period is known GO
Lateral Seismic Force GO
Vertical Distribution Factor when Lateral Force is Known GO

What is response modification factor?

The response modification factor is defined as the ratio of the base shear that would be developed in the lateral load resisting system for design earthquake ground motions if the system was to behave elastically to the design base shear

How to Calculate response modification factor?

response modification factor calculator uses response modification factor=1.2*seismic coefficient for short period structures/(seismic response coefficient*fundamental period^(2/3)) to calculate the response modification factor, The response modification factor formula calculates the response modification factor when we have a prior info of factors affecting it like fundamental period, seismic coefficient for short period structures etc. . response modification factor and is denoted by R symbol.

How to calculate response modification factor using this online calculator? To use this online calculator for response modification factor, enter seismic coefficient for short period structures (Cv), seismic response coefficient (Cs) and fundamental period (T) and hit the calculate button. Here is how the response modification factor calculation can be explained with given input values -> 1.202E-5 = 1.2*1/(1*31556952^(2/3)) .

FAQ

What is response modification factor?
The response modification factor formula calculates the response modification factor when we have a prior info of factors affecting it like fundamental period, seismic coefficient for short period structures etc. and is represented as R=1.2*Cv/(Cs*T^(2/3)) or response modification factor=1.2*seismic coefficient for short period structures/(seismic response coefficient*fundamental period^(2/3)) . seismic coefficient for short period structures is for acceleration dependent structures, seismic response coefficient calculate reduced design seismic forces of structural system and deflection amplification factor to convert elastic lateral displacements to total lateral displacements and fundamental period is the basic time period required.
How to calculate response modification factor?
The response modification factor formula calculates the response modification factor when we have a prior info of factors affecting it like fundamental period, seismic coefficient for short period structures etc. is calculated using response modification factor=1.2*seismic coefficient for short period structures/(seismic response coefficient*fundamental period^(2/3)) . To calculate response modification factor, you need seismic coefficient for short period structures (Cv), seismic response coefficient (Cs) and fundamental period (T). With our tool, you need to enter the respective value for seismic coefficient for short period structures, seismic response coefficient and fundamental period and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
How many ways are there to calculate response modification factor?
In this formula, response modification factor uses seismic coefficient for short period structures, seismic response coefficient and fundamental period. We can use 1 other way(s) to calculate the same, which is/are as follows -
  • response modification factor=2.5*seismic coefficient for velocity dependent/seismic response coefficient
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