12. Slide 23/3321.07.14CH-NGO DRR Standard Shelter: Technical Requirements: Typhoon Resistance Resistance250 km/h sustained wind speed Size4.20m * 5.00m = 21 m 2 (for 6 persons, 3.5 m 2 minimal floor space) Concret20 * 20 cm ring beam and columns on point found., strip for CHB walls Roof Structure X - double truss (span 7.00m), w. bolts; Top chord: 2 ʺ *6 ʺ ; lower chord: 2 ʺ * 5 ʺ Rafters 2 ʺ *5 ʺ on 80 cm on center; purlins at 60 cm; additional purlin at 30cm at eve CGI-sheets26 gauge, but 0.4 mm strength to be ensured; crosswise umbrella nails WASH«Lavabo» plus Bowl, connected to a two step open septic tank system