Mass, walls, other objects

[CBFASI]

Well I am stuck....

I have built a hanger which imported ok.

Its has one distance Lod (very low poly anyway, and it wont go down much more)

a Roadway Lod
a Geometry Lod

The roadway Lod has meant I can walk ove rhte roof when I land on it..

BUT

initially I had no mass assigned and was able to take planes, trucks, tanks etc.... into the hanger.. but could also walk through the walls..

So I hunted and found aout about the mass and the Structure/Topology and I can no longer walk through the walls....BUT

I can no longer go into the hanger with planes. etc... (Bouncing)

The hanger has a FLOOR, is this the problem?? (if so then my ship is also a failure)

I tried to assign mass to all vertices except those touching the floor and it still didnt work..

Anyone know how I can solve this??

Oh yes I am very new to 3d modelling so describe simply please

[zwadar]

see this (http://o2tutorial.d2.cz) and lods section for info.
But wall in geometry LOD must be at least 0,5 metres wide! If it is lowes solier cas go threw the walls.

[CBFASI]

I thickened the wall but when I was walking through the walls I hadn't set the mass, now I have mass I have collsions with any vehicle or plane I drive (or attempt to drive!&#33http://www.flashpoint1985.com/ikonboard301/iB_html/non-cgi/emoticons/wink.gif into the hanger..

I have looked at the above tutorial and it helped at first (It did solve the walking through walls) but it seems either I can't see the solution for this probelem I now have or its a new problem..

[CBFASI]

I eliminated the problem...I removed the floor from the model..

I think the following LOD's need a bit more explaining as I think its where my problem is related too

Geometry & Roadway

I think the problem is due to the sheer size and usage of the buildings I am creating.

[zwadar]

Si in "types " section and "static" will be described all lods needed for building and woh to make it.. it will be threre tomorrom or day after tomorrow..

[CBFASI]

Thank You Zwadar..

It seems I as bit eager to get these buidlings done.