Specifications include, but are not limited to: Rafters Lattice & Center ring: Lattice Wall: Expandable, clear (knot free), wooden lath assembled with aluminum “pop” rivets and rivet caps. Back-up washers are not acceptable due to increased wear on materials. Fully expandable wall height to be a minimum of 86 inches (in.) (adequate to accommodate a minimum 80 in. door). Lattice wall to anchor to door frame with at least eight stainless steel plates. Lattice wall to anchor to platform on exterior. Rafters: Select 2x4 wood, machine stress-rated to meet the structural requirement of the MN State Building Code including wind and snow loads. Snow loads for all yurts will be 60 pounds per square foot (psf.) Rafters include notched to fit into the main tension cable. Hardened steel pins to be inserted into rafter ends which fit into holes in the center ring. Rafters to be predrilled for screws which once installed will prevent the tension cable from detaching from the rafter notch. Center ring: Laminated compression ring made from select structural 2x6 must be through-bolted for additional strength. All hardware connecting dome to center ring must fit through the center ring. Door & Entry: Door: Standard clear wood door with vertical grain wood panel and acrylic window to be pre-hung in door frame. Anodized aluminum threshold to be no taller than ½” in height for wheelchair access. Wood thresholds will not be accepted due to durability and maintenance. Hinges to be 4” x 4” (solid brass) and mortised into door and jamb. Door to be minimum 76” tall and 34 ½” wide providing adequate clear opening for wheelchair access. Door to have aluminum door shoe with rubber weather-strip. All wood including door frame must be finished/sealed lumber and should not require additional treatment on site. Door lever: Door to include pushbutton door latch door lock. Mechanical push button access control with no wiring or batteries. ADA compliant, key override, vandal resistant pushbuttons, passage mode, solid cast levers and housings. Satin Chrome color preferred. Example models: Simplex model 5051, Simplex model L1041B, or approved equivalent.