To prevent any weather damages, be mindful of where you set up your yurt. The best spot will be protected from wind, receive sun in the morning, get shade in the afternoon, and be free of any overhead objects.  This way, your structure will stay safe and secure. Overhead items include dead tree limbs, for example. The particular size of your platform depends on the overall diameter of your structure. These instructions are for a yurt with a 12 ft (3.7 m) diameter, so review your particular instructions before you start and adjust the process as necessary.  If your platform is not the same size and shape, your yurt may not be completely weatherproof. You want the side cover fabric to extend below the interior floor level for a draft-free, watertight seal. The platform is the hardest and most complex part of building a yurt. If you are not familiar with carpentry work, hire a professional contractor to make your base. This is the easiest way to ensure you build your yurt safely and correctly. If you’d like to try building the platform yourself, review the instructions from your specific yurt manufacturer. Many companies offer preliminary instructions on building your base yourself. These instructions will vary based on your particular yurt kit. Use 10 or so concrete footings to make the base of your platform. The overall placement will depend on your particular framing plan, but in general the footings should be 2–4 ft (0.61–1.22 m) apart in a 12 ft (3.7 m) circular shape. Use precast concrete footings. Use a table saw to cut your wooden beams based on your floor plan. Then, place the beams across the footings, and use a level to ensure each beam is straight. Finally, fasten the beams to the footings using the attached holders on the wooden beams.  For assistance with this process, ask your professional carpenter. Your specific beam placement will depend on your instructions. You can use 1.125 in (2.86 cm) thick plywood to create your flooring. Lay the boards over top of your beams so they are flat and parallel, and secure them on each side using a drill and a screw. Insert a screw through the plywood and the beam every 6–12 in (15–30 cm). The size and width of your flooring depends on your particular instructions. Using a hand saw, go around the edges and cut off any piece of plywood that hangs over your beams. This maintains the overall circular shape of your yurt. Make your cuts so the flooring and beams are flush. It’s okay if the sides aren’t completely even. Try your best to cut the wood as straight as possible. This seals the flooring and the drip edge. The drip edge is the outer edge of the yurt, and it is important to seal the edge and the flooring so no moisture gets inside. To do this, run a thin, even line of caulking around the perimeter of the flooring. This way, your wood is secured together and rain or condensation will not seep into your yurt. Cut 3⁄8 ft (0.11 m) exterior plywood into strips, based on your desired width. Hold the strips around the perimeter of the drip edge, and use a drill and large wood screws to fasten the strips of wood. Add 1 screw to each end of the strip.  When you do this, you want 1 ft (0.30 m) of plywood to extend above the floor level. Use a table saw to cut your strips to your desired size.
Decide on a spot for your yurt to protect it from the elements. Use a circular platform that is the same diameter of your yurt. Hire a professional to help you build your platform. Place the footings in a circular shape according to your framing plan. Cut the beams to the correct length and fasten them to the footings. Secure your flooring onto the wooden beams with your drill. Cut the flooring into a circle to match your yurt’s diameter. Apply waterproof caulking around the outside edge to seal out moisture. Secure a strip of plywood around the perimeter to finish the drip edge.