Here I will tell you about 3dsmax 3dmodel office chair studio tutorial.
I have used following techniques in this 3ds max tutorial.
[1]-Now click on the NGon button and create NGo with the following size
Apply the extrude modifier with the amount of 65.0
Now place the NGon like me 
[2]-Create cylinder and place like me 
[3]-Convert the cylinder into the editable poly now select the polygon 
[4]-Apply the extrude polyons with the amount of 15.0
Your cylinder should like this 
[5]-Select the polygons and apply the bevel polygons with the good following amount as shown below 
[6]-Your object should like this 
[7]-Create box like me 
[8]-Convert the box into the editable poly now select the vertexes and drag like me 
[9]-Your object should like this now apply the symmetry modifier 
[10]-Your object should like this 
[11]-Apply the mesh smoth modifier with the amount of 2.0 
[12]-Create another box and again convert into the editable poly
Now drag the vertexes like me 
[13]-Apply the mesh smooth modifier with the amount of 2.0 
[14]-This is my material window and create materials like this 
[15]-Set the skylight like this with the following parameter 
[16]-This is final image of the office chair
Enjoy thanks for watching 