i'm living in a dormer bungalow, built about 1947, semi detatched, cavity outer walls of brick outer, breeze block inner, single brick inner walls between rooms i believe,
the dormer conversion was done in the 70's i believe, they laid what look like 6 x 2s across the existing celing joists, running at right angles to the joists, not measured them, and i'm guessing from what i remember seeing. i've only had a bit of the floor up in the middle, so dunno how the beams are connected at the ends, if they even need to be.
In the room im talking about, the floor is 15mm chipboard, with those green interlocking boards laid ontop, it basicaly runs the entire width of the bungalow for mostly the back half of the building, is an L shape at the very end,
Below the room is the dining and living rooms, they were two rooms, but have been knocked into 1, lintel accross the gap and all that, where the L shaped bit is the bathroom and hallway is below, so more brick walls below the floor.
Reason i'm asking all this, the upstairs room in question is my games room, at the moment i have a pinball machine that weighs 145 kilo's, and 4 fruit machines/one armed bandits weighing from 50 to 120 kilo's each,
i'm planning to add more as i find the cheap non working machines and fix them up, including one of those candy cranes if i can find one cheap enough, a video arcade machine and a single player 2p pusher, but i dont want to get my games room as i like it then have the floor collapse as i've put more weight up there than was designed.