This is simple technology. There are two triangular pipe frames, each side measuring eight feet, held in place by three long pipes, two clamped to the ground and the third kept in position by ropes. A cloth cover completes the shelter that looks like a tent. But it is spacious—each unit can accommodate five or six adults. "The user can’t make a mistake in installing it even if he or she wants to!" says N.K. Garg of CBRI.