Cement delivery is loud, messy and a foe to tree systems based on size. In this video, master builder Matt Risinger shows us a 28-meter pump truck that looks more like a Star Wars prop. The limb-saving machine can almost adjust to a flat position to deliver that concrete. If you have a lot full of trees that you want to make sure aren't harmed, ask your contractor about a "Z Folding" pump. Also watch how all those air bubbles are handled.