How Much To Build A Storm Shelter?
- Joe Thomas
Above-Ground vs. Underground – Generally, above-ground storm shelters are less expensive than subterranean shelters. Numerous of these above-ground shelters are installed in garages and basements. The price range for garage storm shelters is between $3,000 and $9,000, but the average price for all forms of above-ground storm shelters is around $15,000.
What is the cost of an above-ground storm shelter?
An above-ground storm shelter costs between $3,000 and $15,000, whereas an underground unit costs between $4,000 and $30,000. The common location for an above-ground unit or safe room is the garage or basement.
Article Download Article Download A storm shelter is a secure location where you may seek refuge during a severe storm such as a tornado or a hurricane. The construction of an underground or above-ground storm shelter should be performed by certified experts who adhere to the rules established by government agencies such as the Federal Emergency Management Agency (FEMA). 1 Search for a spot atop the building’s foundation. Your storm shelter must be secured to a sturdy concrete slab base. Choose a position in your basement or on the ground level close to a structural wall so that your shelter is out of the way and has added support.
- If you are concerned about flood danger from major storms such as hurricanes, choose an elevated position.
- Tornado protection is more effective in underground shelters than in above-ground shelters.
- A bathroom, a closet, or a corner of the garage can also serve as a good storm shelter.
Remove any impediments from the area. Remove any storage goods, furniture, or decorative things from the area where you intend to install your shelter. Additionally, you must remove any tiling, carpeting, or other flooring that covers the building’s base.
- Move any objects far enough away so that they do not impede your job.
- Ensure that there is a clear way to the storm shelter and that it is easily accessible.
Advertisement 3 Calculate 0.65 square meters for each individual According to FEMA standards, each individual must have sufficient floor area to inhabit the shelter for the length of the tornado or hurricane. Multiply the number of people who may need to utilize the shelter in an emergency by 7 square feet (0.65 m 2) to determine the total space your shelter must cover.
- For instance, if you have a family of four, you would require a place that is 28 square feet in size (2.6 m 2 ).
- Consider include one or two more people in your estimates in case you require additional room.
4 Determine the length of the walls of your storm shelter. To calculate the area of a square, multiply the length of one side by the width of one side. Determine the lengths of your walls depending on the required square footage or meters. Use a ruler or measuring tape to determine the lengths on the ground. A square-shaped shelter will give the most storm protection. For instance, if you want 49 square feet (4.6 m 2) of space, the height of your remaining two walls must be 7 feet (2.1 m), since 7 feet (2.1 m) multiplied by 7 feet (2.1 m) equals 49 square feet (4.6 m 2 ). Advertisement 1 Measure the length of your walls and cut 2 by 6 in (5.1 by 15.2 cm) boards to fit. Take 2 by 6 in (5.1 by 15.2 cm) boards, measure the length of your walls, then write the lengths using a pencil or marker on the boards. Then, use a circular saw to cut the boards to the desired dimensions.
- Additionally, you may measure your walls and purchase pre-cut boards that match those dimensions.
- Request that a worker at the hardware or home improvement store where you purchased the boards trim them to size.
2 Drill 5.5-inch (14-centimeter) holes with a hammer drill into the boards and concrete. A hammer drill is a potent equipment that may be used to drill through the concrete foundation. Drill approximately 12-inch (30-centimeter)-apart holes through both boards and into the concrete underneath them.
- The holes are necessary for attaching the anchor bolts.
- To drill through the boards and into the foundation, start the drill slowly and gradually accelerate to full speed.
- Hammer drills may be rented from home improvement retailers.
Use eye and ear protection when using the hammer drill to prevent hearing loss and concrete particles from entering the eyes.3 Anchor the boards to the slab using anchor bolts measuring 5.5 inches (14 centimeters) in length. Align the boards so that their holes align with those in the slab. Utilize a wrench to tighten the bolts until the boards are properly secured.4 Above the slab, screw 2 by 6 inch (5.1 by 15.2 cm) boards into the ceiling. Align two-by-six-inch (5.1 by 15.2 centimeter) boards directly above the boards that are attached to the ground. Use wood screws measuring 15 centimeters (6 inches) to secure them to the ceiling above the slab.
- You’ll need the ceiling boards in order to install the wall studs.
- Ensure the planks are securely attached to the ceiling.
5 Attach the floor joists to the ceiling using concrete nails. Take 2 by 6 in (5.1 by 15.2 cm) boards long enough to stretch from the framing board on the slab to the ceiling board. Install a second layer of boards 12 inches (30 cm) apart using wood screws measuring 6 inches (15 cm).
- Use one hurricane knot per stud to ensure that the walls can resist high winds.
- You may get hurricane ties in hardware stores, home improvement stores, and on the Internet.
7 Attach 14-gauge steel sheets to the studs of three walls. Using a power drill and #10X2-inch (#10X5.2 cm) screws, connect the steel sheets to the wall studs to construct a sturdy framework. Drive the screws into the wooden studs through the sheet.
- 14-gauge steel sheets are available in roofing supply stores, home improvement stores, and online.
- At this time, do not place metal sheeting over the wall where the door will be installed.
8 Over the steel sheets, fasten two pieces of 34-inch (1,9 centimeter) plywood. Place a piece of plywood over the steel sheeting and use a power drill to drive #10 x 2-inch (#10 x 5.2 cm) screws through the sheets and into the wall studs. Cover the metal sheets entirely with plywood, then attach a second layer for further stability.
- Common steel doors used in home and commercial buildings cannot survive the onslaught of tornadoes and hurricanes. Storm shelter doors are heavy and costly.
- There may be storm-rated doors available at home improvement or hardware stores, but you may need to buy a storm room door online.
Federal Emergency Management Administration (FEMA) has particular criteria for storm shelter doors in the United States. If you are uncertain if a door is acceptable for a storm shelter, verify that it meets FEMA specifications.2 Mark the dimensions of the door frame on the open stud wall with a measuring tape.
Utilize the door’s specifications to construct an aperture that will accommodate the door’s frame. Use a ruler or tape measure to measure your door, and then measure the height and breadth on the studs of the open wall. Use a pencil or marker to indicate where the studs must be removed. Ensure that the door frame is at least 7 feet (2.1 m) in height so that you can pass through.3 Using a circular saw, remove the studs to accommodate the door frame.
Cut uniformly along the lines that you indicated on the door frame’s studs. Just enough studs must be removed to fit the door frame. If the cut edges of the studs are rough or uneven, you can lightly smooth them with 180-grit sandpaper.4 Install the door in accordance with the manufacturer’s instructions. After positioning the frame in the aperture, casing nails are used to secure it in place.
- Utilize the screws and nails provided with the door assembly.
- Open and close the door to ensure its functionality.
- Use a level to ensure that the door’s framing is level.
5 Cover the exposed wall with two layers of plywood and steel sheets. After installing the door, lay steel sheets over the exposed studs and fasten them with #10 x 2-inch (#10 x 5.2 cm) screws in each corner. Then, cover the sheets with plywood and fasten them using #10X2-inch (#10X5.2 cm) screws driven through the plywood and into the wooden studs. Add fresh query
- Question How long do I need to stay at the shelter? Until your weather source, such as a radio, reports that the tornado has passed and the storm is passing, stay indoors. Wait until the hurricane is at least a few miles distant and the region is safe from severe winds and storm surge before leaving.
- Question What type of ventilation is necessary for a structure without electricity? There are ventilation systems with built-in filters that are operated by hand cranking. I would recommend those.
- Question Do we need a city permit to construct an underground shelter? Depending on your municipality, it is possible that you will require a permission to construct any improvements to your property.
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How can I construct a homemade storm shelter?
Concrete block DIY Storm Shelter 12×20 foot
Customization and Installation – You may order a prefabricated safe room directly from the manufacturer or from a hardware shop or large box retailer. Even while it is feasible to create a safe room on your own, you may choose to hire pros. The other choice is to construct a specialized shelter out of reinforced concrete or Kevlar.