Is there anything wrong with weight bearing? The total area of 15 square meters. The attic floor estimate 18MM blockboard, in addition to the requirements of the attic can go up two people outside bearing on it. Don't put articles, is a flat top and a heat insulation function. Can each channel be spaced 70 or 80 centimeters apart? In addition, 10, how much money a channel, the best is 9 meters a price of 6 meters is also ok.
No channel steelWith 100~120 rectangular square tube or 120 C steel, two channel steel price can buy 3 square tubesThe board specification is 1.2*2.4m, so the steel beam spacing should be 60cm; the bone is 30*50 square tube and the spacing is 60cmThe span of 3.9m, bearing no problem, you can turn a somersault roll, O (a _ U) O~
Don't put anything. Just 10 nonstandard ones.
Channel 10 is a little small, at least with 12# channel steel.
