The zip line starts at door height and must land at the floor approximately seven feet away .

Must span at least 15 inches and support a minimum of 5 pounds to allow ground teams to move supplies.

For advanced teams, a collapsible ramp must reach two bricks high and support 5 pounds without the weight sliding back down. The "Zombie" Probability Model

Tension is key. If the line is too slack, the VIP will stall; if it is too steep, the impact at the bottom may be fatal for the egg. 3. Complementary Structures

This guide covers the core engineering requirements for the "Raft" and "Zip Line" components of the survival challenge.

Each roll represents a human encounter. For example, a Yellow zombie has a 1/3 chance of turning a human, a 1/3 chance of the human escaping, and a 1/3 chance of the human injuring the zombie.

It must transport one VIP egg safely to the ground; extra credit is often awarded for transporting two eggs or additional weight simultaneously.