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Put a form up.How did they do the first one?
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I'm retarded. So just like brick arches?Put a form up.
Arches for brick work are typically made from plywood with blocking in-between front and rear layers to achieve desired thickness. Circles done today are formed with Styrofoam in the concrete and mansionary fields. Concrete form suppliers stock sizes up to 12 inches thick. 20 years ago I would be called in to shape weird round and oblong pipe entrance angles formed into sediment boxes. These structures were built on site, out of state were state tolerances were 2 inches max between pipe and formed box. In the 70's round forms were done with wood cut like a pie in four pieces, then shimmed between pieces to separate the sections. Once the project is done, you remove shims and the sections can be removed. That first picture was likely done using rebar, with stones being drilled and slid down on both sides from a separation on the top.I'm retarded. So just like brick arches?
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Those first three are freaky cool! LOL.
Just got back from ConExpo. Had some amazing equipment there and made a ton of new contacts.
It was also nice to be wined and dined by our vendors…