i built a tic tac toe board out of 2by8by8 and supported it in the middle with 4by4 two foot down sitting on the ground it has two by eights on top accross the top from side to side it is thirteen feet and from front to back it is eight foot it has three and half inch screws in it and quater inch lag screws three inches long let me know if that is enough for a fifteen foot boat trailer to ride over without collapsing please
Asked Feb 28, 2010
0
more specs would be required to answer this question
thetechempire Mar 11, 2010