04-17-2010, 07:40 AM
(This post was last modified: 04-17-2010, 07:48 AM by BennyP.

*Edit Reason:*)
dear friends

i hv solve one RCC building in Etabs considering dynamic effects using response spectra method an i m getting natural period 2.37 sec an base shear 1319 kN. An i hv solved same problem manually also i got natural period 0.97 sec and base shear 1320 kN but , the problem s that natural period by manually an etabs r not matching plz some one help me i m attaching etab file also.

these r the details of building

Live load : 4.0 kN/m2 at typical floor

: 1.5 kN/m2 on terrace

Floor finish : 1.0 kN/m2

Water proofing : 2.0 kN/m2

Terrace finish : 1.0 kN/m2

Zone III : Z= 0.16

Earthquake load : As per IS-1893 (Part 1) - 2002

Depth of foundation below ground : 2.5 m

Type of soil : Type II, Medium as per IS:1893

Storey height : Typical floor: 5 m, GF: 3.4 m

Floors : G.F. + 5 upper floors.

Plinth level : 0.6 m

Walls : 230 mm thick brick masonry walls

only at periphery.

i hv solve one RCC building in Etabs considering dynamic effects using response spectra method an i m getting natural period 2.37 sec an base shear 1319 kN. An i hv solved same problem manually also i got natural period 0.97 sec and base shear 1320 kN but , the problem s that natural period by manually an etabs r not matching plz some one help me i m attaching etab file also.

these r the details of building

Live load : 4.0 kN/m2 at typical floor

: 1.5 kN/m2 on terrace

Floor finish : 1.0 kN/m2

Water proofing : 2.0 kN/m2

Terrace finish : 1.0 kN/m2

Zone III : Z= 0.16

Earthquake load : As per IS-1893 (Part 1) - 2002

Depth of foundation below ground : 2.5 m

Type of soil : Type II, Medium as per IS:1893

Storey height : Typical floor: 5 m, GF: 3.4 m

Floors : G.F. + 5 upper floors.

Plinth level : 0.6 m

Walls : 230 mm thick brick masonry walls

only at periphery.

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