Neal McCormick
09-22-2005, 10:31 AM
I'm hoping someone here can provide some guidance -
My son is building a walking bridge for an eagle project. They have discovered that the creek bed over which the bridge will go is solid rock - they were unable to put piers into the creek (original plan was to build concrete piers in the creek onto which a post would be attached. Because of a variety of constraints, the bridge had to go in a particular spot. The guidance we got was to span the space - 20 ft - with 2 x 10's as joints on 12 inch centers. That was done and blocking was installed. At this time there is no deck on the structure. The problem is the deck substurcture has noticeable lateral sway - at least 4 6 inches to my eye. Anyone have any idea of how this could be stabilized? There is a thought that the decking will stablize it but I don't see how that could be - if the substructure sways, fastening more pieces to what is swaying is not stabilizing it. There is about 5 weeks left to get this done and my son is beginning to look more than a bit apprehensive. Can someone help us out here?
Thanks!
My son is building a walking bridge for an eagle project. They have discovered that the creek bed over which the bridge will go is solid rock - they were unable to put piers into the creek (original plan was to build concrete piers in the creek onto which a post would be attached. Because of a variety of constraints, the bridge had to go in a particular spot. The guidance we got was to span the space - 20 ft - with 2 x 10's as joints on 12 inch centers. That was done and blocking was installed. At this time there is no deck on the structure. The problem is the deck substurcture has noticeable lateral sway - at least 4 6 inches to my eye. Anyone have any idea of how this could be stabilized? There is a thought that the decking will stablize it but I don't see how that could be - if the substructure sways, fastening more pieces to what is swaying is not stabilizing it. There is about 5 weeks left to get this done and my son is beginning to look more than a bit apprehensive. Can someone help us out here?
Thanks!