Jib Crane Footing - The Lost Plywood Method скачать в хорошем качестве

Jib Crane Footing - The Lost Plywood Method

This was a quick job I fit into the schedule. Working from an engineered plan I had intended to do a little bit more in depth coverage of using a single plywood pattern for both the bottom and top of the bolt cage but I got lost in my busy day and glossed over it somewhat. One of the trickier parts of jib crane bases is getting the bolts straight up and down in the correct pattern and keeping them there when you place the concrete. By using a single plywood form to anchor the bottom of the bolts together and then using the same pattern at the top to hold them while you pour you will keep everything where it belongs. Smaller bases usually only have 1 bolt at each of the 6 stations and you can get away with wet setting them as you pour but there really was no way to do that here with the double mat and imbedded plate ties for the double bolts so this is how I did it.