Introduction
Building an above-ground crib-walled fallout shelter is a practical way to protect yourself and your loved ones from the dangers of nuclear fallout. This guide will walk you through the step-by-step process of constructing a sturdy and effective shelter using readily available materials. By following these instructions, you can create a safe haven that provides essential protection against radioactive particles.
Materials and Tools
Before you start building, gather all the necessary materials and tools. Here’s what you’ll need:
Materials
- 2×4 lumber: 120 pieces, each 8 feet long
- 3/4″ plywood sheets: 24 sheets, each 4×8 feet
- 6-mil polyethylene sheeting: 100 square feet
- Clay or other compactable soil: 10 cubic yards
- 55-gallon plastic drums: 4 drums
- Geiger counter and radiation detection materials
- 4″ diameter vent pipe and filter
- Duct tape and plastic sheeting for sealing
Tools
- Tape measure
- Level
- Hammer
- Nails
- Screwdriver
- Shovel
- Wheelbarrow
- Tamping tool
- Saw
- Safety goggles and gloves
Step-by-Step Construction
Step 1: Crib Construction
Start by building the wooden cribs. Each crib should measure 4’x4′ and be constructed using 2×4 lumber. Use 3/4″ plywood sheets to create the walls. Stack the cribs in a square pattern, leaving 12″ gaps between them for filling with earth. This creates a sturdy framework for your shelter.
Step 2: Lining the Cribs
Line the interior of each crib with 6-mil polyethylene sheeting. This waterproof lining prevents water seepage and ensures the structural integrity of your shelter. Make sure to cover all surfaces thoroughly.
Step 3: Earth Filling
Fill the gaps between the cribs with 18″ of compacted earth. Clay is ideal for this purpose as it compacts well and provides a dense barrier against radiation. Use a tamping tool to ensure the earth is tightly packed. This layer acts as your primary radiation shield.
Step 4: Roofing
Construct the roof using 2×4 lumber and 3/4″ plywood. The roof should be 2′ thick, providing a solid barrier against fallout. Cover the roof with 6-mil polyethylene sheeting and then add another 18″ of compacted earth. This double-layered roof offers excellent protection.
Step 5: Drainage
Install 4″ diameter drainage ditches around the perimeter of the shelter. These ditches help prevent water accumulation and ensure the stability of your shelter. Dig the ditches to a depth of 12″ and fill them with gravel to enhance drainage.
Step 6: Entry/Exit
Create a 2’x3′ entrance to the shelter. Build a 12″ thick door using 2×4 lumber and 3/4″ plywood. Seal the door with plastic and duct tape to prevent any radioactive particles from entering. This entryway is your main point of access to the shelter.
Step 7: Water Storage
Place 55-gallon plastic drums inside the shelter for water storage. These drums should be clean and sealed tightly to prevent contamination. Ensure you have enough water for each person to last for several days.
Step 8: Fallout Meter
Install a simple fallout meter using a Geiger counter and radiation detection materials. This meter will help you monitor the radiation levels inside the shelter. Place it in a visible location so you can check it regularly.
Step 9: Ventilation
Add a 4″ diameter vent pipe with a 12″ filter for air circulation. This vent pipe should be positioned at the highest point of the shelter to allow for proper air flow. The filter will help remove any radioactive particles from the air.
Step 10: Testing
Conduct a 72-hour test with 20 people to ensure the structural integrity and comfort of the shelter. This test will help you identify any potential issues and make necessary adjustments before an actual emergency.
Conclusion
By following this guide, you can construct a reliable above-ground crib-walled fallout shelter. This shelter provides essential protection against nuclear fallout and ensures your safety during a crisis. Remember to regularly check and maintain your shelter to ensure it remains in optimal condition.