Here’s a DIY project for anyone with a truck (or you can use these as tents, shelters, greenhouses, and other non-truck things as well). It’s a truck bed cover made with PVC pipe. To cover it, you just add a tarp or piece of poly.
From the pictures you can see how the PVC frame is created. You use a lot of angle pieces to extend the line along the bottom while adding ribs. You can actually even bend the PVC itself (so it becomes the curved shape rather than just being under pressure from being plugged into the angle pieces) by boiling it. The way that is done is the PVC is put in the desired shape, either by hand or using some other way, and boiling water is poured into it. This “reforms” the PVC plastic.
One way this can be done is the bow-method. A PVC pipe is bend and the ends tied together with a string (which is also run through the length of the PVC pipe). Unless you want the rope to make bends in the ends of the pipe, you need to also add PVC joints (angled, preferably) to protect from this before pouring water in. There’s a picture of this in the gallery we’ve included here.