Hello guys I will show how create a 3dsmax 3d couch model tutorial.
I have used following techniques shown below in this 3ds max tutorial.
[1]-Click on the chamfer box button and create chamfer box with the following size
Place like me 
[2]-Apply the FFD 3×3x3 and select the control point
Drag the control point like me 
[3]-Your object should like this 
[4]-Create box and convert into the editable poly and now select the vertex
Now drag like me 
[5]-Create one more copy and plae like me 
[6]-Then apply the turbo smooth 2.0 
[7]-Now create another chamfer box and place like me 
[8]-Create three more chamfer box and place like me 
[9]-Create two chamfer box and apply the bend modifier with the good following amount as shown below 
[10]-Create one more chamfer box and place like me 
[11]-Select the polygons in the bottom view port now apply the bevel polygons with the good following amount as shown below 
[12]-Now your object so far like this 
[13]-Create materiallike this 
[14]-Set the skylight like this with the good following parameter as shown below 
[15]-This is my final image 