Ancient Cross Vault with Columns Low-poly 3D model
It has the buttresses but you can have the vault without those becouse they are two different objects. The external edge of the vault can be streched whit a modificator (like FFD2x2x2 in 3dstudioMax). I use this vault for an ambientation, a castle, for a UDK game.
I give the files as: 3dstudioMax2013 default scanline 3dstudioMax2013 vray Fbx Blend Obj 3ds DXF2000 the voult is just unwrapped and I give the textures: diffuse, specular, normal