Emergency Shelter Build Time
How long to build a debris hut, snow cave, or tarp shelter when conditions are bad and you have limited tools.
Inputs
Result
A natural placement between the calculator and the explanation.
What this solves — and what it doesn't
Emergency shelter builds vary wildly with crew, tools, and conditions. A two-person crew with knives and cord can finish a debris hut in ~2 hours in calm weather; a solo builder with bare hands in a storm needs 6+. This tool gives a starting estimate so you can decide whether to commit to a shelter, a hasty bivy, or movement.
How to read the result
The result is a time in hours/minutes assuming average pace. It includes site selection buffer if you add 30 minutes mentally.
The biggest assumption: more than 3 people barely speeds things up because they start tripping on each other.
Limitations
- No specific terrain model. Rocky ground, deep snow, or thick brush will add time.
- Doesn’t include finding materials; assumes they’re available locally.
- Doesn’t model injuries reducing crew effectiveness.
Frequently asked questions
Lean-to vs debris hut?
Lean-to is fast but reflects body heat poorly; debris hut is slow but insulates far better. In anything wet or cold, debris hut wins.
When is a tarp enough?
When you have a sleeping bag rated well below forecast low, and weather is mild. Otherwise tarp alone is risky.
Snow cave vs quinzhee?
Snow cave: dig into a slope or drift. Quinzhee: pile snow, let it sinter, then hollow. Cave is faster in deep snow; quinzhee works where there’s no slope.