What is the most common 3d modelling software used in architects offices ?

mostly the offices used to auto cad software

i guess3d max is the answer , now there is the revit back with power and archicad , skecth up is  cute easy3d modeling software i might say 

- AutoCad

- Solidworks 

- Catia

- Inventor Pro

- Creo paramatric

3Ds Max I think :) you can use Maya or Autocad 

- Autocad

- SolidWorks

- Ldorado

STAAD Pro. is the strutural analysis software 

Autodesk Professional Products like AutoCAD Plant 3D.

AutoCAD, 3D Max, Solidworks, Sketch, SAP

Rhino 3D is best and easy software for architects offices.

the most modeling sofware i am using is ( Autodesk 3D Max )

ArchiCAD, AutoCAD Architecture