The middle beam uses the reinforced mounting points using m8x1.25 bolts. This is what will carry the majority of the weight of the cabinets. I put a 1.5x3 inch stud below those points into the recessed area and then used mending plates to connect it to the mounting points. On top of the 1.5x3 sits a 1.5x1.5 picket which provides the bottom support for the cabinets.
The bottom beam is attached through existing holes in the inside part of the sheet metal using bolts, washers, lock washers and bolts. It'll be used to hold in place the bed platform and won't carry too much weight as it'll have support footings down onto the floor once the flooring is installed. Also there are 8 or so bolts so whatever weights rests on it will be distributed. There is also a m6x1 mounting point towards the sliding door i am using.
The top beam uses the upper row of existing holes in the sheet metal. On the drivers side that meant rerouting the cable strand to make those holes accessible. It will go through the cabinets when it's done. Not sure if there was an easy way to remove those plastic clamps holding in place the cable strand but those were a pain in the behind to pry out. Securing the bolts in the top row was a pain as there is little room to work with but i got washers lock washers and nuts on them from behind so it should stay nice and tight. Happy to share more detailed pics if interested.
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The middle beam uses the reinforced mounting points using m8x1.25 bolts. This is what will carry the majority of the weight of the cabinets. I put a 1.5x3 inch stud below those points into the recessed area and then used mending plates to connect it to the mounting points. On top of the 1.5x3 sits a 1.5x1.5 picket which provides the bottom support for the cabinets.
The bottom beam is attached through existing holes in the inside part of the sheet metal using bolts, washers, lock washers and bolts. It'll be used to hold in place the bed platform and won't carry too much weight as it'll have support footings down onto the floor once the flooring is installed. Also there are 8 or so bolts so whatever weights rests on it will be distributed. There is also a m6x1 mounting point towards the sliding door i am using.
The top beam uses the upper row of existing holes in the sheet metal. On the drivers side that meant rerouting the cable strand to make those holes accessible. It will go through the cabinets when it's done. Not sure if there was an easy way to remove those plastic clamps holding in place the cable strand but those were a pain in the behind to pry out. Securing the bolts in the top row was a pain as there is little room to work with but i got washers lock washers and nuts on them from behind so it should stay nice and tight. Happy to share more detailed pics if interested.