How do I check my Etabs time period?
The time period (the one-story model of the structure is below) calculated manually by using the equation in IS 1893: 2016 is 0.170963 and that given by Etabs 2017 is 0.171 (highlighted in the picture below).
How do you calculate time period of vibration?
As the frequency of a wave increases, the time period of the wave decreases. The unit for time period is ‘seconds’. Frequency and time period are in a reciprocal relationship that can be expressed mathematically as: T = 1/f or as: f = 1/T.
What is importance factor?
Importance Factor. Importance Factor is determined from Design Loads for Buildings and Other Structures (ASCE 7) based on the Occupancy Category. It is utilized in calculating flood, wind, snow, seismic and ice design loads. The Importance Factor is a multiplier that increases or decreases the base design loads.
What is Risk Category II?
Most buildings and structures are considered to be Risk Category II. The IBC code defines essential facilities as “buildings and other structures that are intended to remain operational in the event of extreme environmental loading from flood, wind, snow or earthquakes”.
What is Zone Factor?
Zone factors are given on the basis of expected intensity of the earthquake in different zones. In IS Code, it is given based on the Maximum Considered Earthquake (MCE) and service life of the structure in a zone.
What is seismic factor?
Seismic analysis is a subset of structural analysis and is the calculation of the response of a building (or nonbuilding) structure to earthquakes. As seen in the figure, a building has the potential to ‘wave’ back and forth during an earthquake (or even a severe wind storm).
What is SDS in ASCE?
SDS = the design spectral response acceleration parameter at short periods. SD1 = the design spectral response acceleration parameter at 1-s period.
What is seismic zone factor Z?
Seismic Zone Factor (Z): It is represent the peak ground acceleration in studied site as a percentage of gravity. acceleration g (9.81 m/sec2).