[razerwire]

Built a few enclosed trailers. Ones i built had shape of TPD trailer. Laid out frame on ground, squared up, welded together. Built walls like house frame with top and bottom 2x2 plates with 2x2 studs. Floor fame was 2" wide with angle iron wielded to inside so a beaver tail was easy to do at back. Tipped walls up and wielded to floor frame. Put cross 2x2 between walls to form roof and front of trailer. Put temp bracing to hold walls when framing roof. Then put 2x2 at 45 angle at top corner between wall and roof about 18' long or longer if higher ceiling. Made sure layout started from back of trailer so 48" wide prefinished aluminum sheets would hit in center of 2x2 wall studs. Started putting sheets on from back and overlap 1" with next sheet because used double sided tape to put sheets on walls. Would put tape on studs and leave outside cover on tape, then hold sheet up in place, with help and stick edge toward back of trailer on. With help would pull sheet far enough out to get hand on outside of tape and pull strip of protecting film off and stick down to second stud and keep going till sheet was on. Over lap next sheet 1" and keep going till side was done. Went to other side and started at back of trailer again with double sided tape putting on siding till done. Front of trailer had polished aluminum diamond plate up 48" for stone guard. From there up used same siding. Roof was one piece of aluminum set on top in sun to expand before putting on with double side tape. Edges were screwed down with angle trim that covered roof and sides. Used stainless for one trailer and aluminum for rest. Used strip of trim at bottom of wall to finish, Floor used 3/4" tongue and grove exterior glue marine plywood laid over floor frame and angle iron at wall edges. Smaller cross frames were used to follow beaver tail angle one sheet or 48" from back. When making side walls figure where box over tires will go and make the bottom of wall go up high enough and long enough to frame tire box to. Made frame with shaft for drop down back door. Stiffened back opening with larger stud at each side of opening and dropped cross piece down to make header over door opening. Finish floor with covering of choice. FWIW Framing like a house made sense to me and it did go very fast. Most people think its factory made so I guess we were successful?