Hello my name is Heath
im going to be building a large heavy swing gate for a customer . And i would like other fabricators advice on posts . Each gate section is 11’ long and 5’6”high . The total calculated steel weight per ft comes to 786 lbs per gate half . there will also be a 3” x 12” x 5.5’ timber cnc cut at an arch that will be , and im guessing here approximately 150-200 lbs . So approximately 1000 lbs per gate . Its heavy and rubust . The ball bearing hinges i have selected are rated for 3000 lbs a pair. I personally will be adding 3 hinges per side as it eases my mind . The posts themselves i have chosen will either be 6”x6”x.500 wall square tube or 8”x8”x.500 wall and probably the latter the post bottom will have 1.250 plate welded to it and 1.250 holes cut in for 1.250 studs.
the customer has a large selection of un used steel screw piles 4” and we are thinking of using them to mount the posts of the gate onto .
we would utilize 4 screw piles per side and screwed in 9’ and then a mating flange/plate 1 1/4” to join all 4 screw piles then the post plate bolted to the screw pile plate w 6 or 8 1 1/4” b7 studs . Im a fan of overkill than not . Gentlemen whats your opinions
oh and i was thinking of slushing the 8x8x1/2” tubes with concrete