(I'd also like to complain about the stupid title, but it's what NYT picked)
(I'd also like to complain about the stupid title, but it's what NYT picked)
I'm thinking something like a robot with treads, that can move in a straight line (or maybe curves), perhaps at the end of a long boom with a conveyor on it that moves bricks from a central source.
It basically grabs a brick off the end, squirts some mortar down, and lays the brick. Make the bricks shaped in a special way so they interlock better and need less mortar at the edges (they already have bricks something like this; they almost look like lego). Then it rolls to the next brick position.
Once it gets to a certain point, it "crawls up" to the next level, perhaps by gripping the level below with the treads (the mortar will probably need to be some kind of "ultra-fast setting" stuff; possibly more like epoxy than mortar), and lays the next layer, being guided by the last.
I guess I'm just saying this particular brick laying robot looks like it was designed by an engineer who, back at the beginning of heavier-than-air flight, thought an airplane needed to flap its wings to get off the ground...
Or better yet: imagine the smallest walking/climbing platform that could carry a robotic arm just big enough to take a brick and pass it on, then coordinate many of them into semi-static bucket brigades for bricks and mortar that could form an ad-hoc power grid to solve the battery issue.
The main innovation tasks/requirements would be cheap volume production of the swarm elements and intelligent planner software to automatically derive a work plan straight from the CAD data (or else project setup/customization would be prohibitively expensive). The beauty would be scaling: need to build a bigger structure? Add swarm elements. Need to speed up the schedule? Add swarm elements.