Hello,
I am building a deck this week. I called the lumber yard and the guy there seems to think that I only need one support beam but It seems that 2 would be better. The deck is 15 x 20, the 15 dimension is out from the house, so the support beam would be 20' long and roughly 13 feet out from the house (I think). So does a 15 span out from the house need more than 1 support beam?
I am building a deck this week. I called the lumber yard and the guy there seems to think that I only need one support beam but It seems that 2 would be better. The deck is 15 x 20, the 15 dimension is out from the house, so the support beam would be 20' long and roughly 13 feet out from the house (I think). So does a 15 span out from the house need more than 1 support beam?