Putting this together by myself wasn't easy, the bolts aren't labeled and the instructions vague about which bolts went where made it an even longer process. i had 2 bolts left over that went on each of the frames top short bars because the holes just didn't align for me. so i took a drill attachment  made to widen holes and routed them until the bolt was able to be seated and the bar it was holding couldn't pop out. the frames rather wobbly which was surprising after everything was tightened. all in all as long as no one over a petite female or tween gets on the top bunk it should be fine.