be provided with projecting rain hood above the opening. Sliding door jambs will be provided with neoprene rain stops, door head and sill will include proper flashings or rain drips. When in closed position, window covers and doors will be well flashed to provide dry storage. Standard aluminum screen frames with plastic "Lumite" or similar screen "wire" will be provided on any awning openings where screens are desired. Sereens are easily mounted or detached by means of metal clips. Plastic filament is not affected by corrosion, is non=absorbent, non-inflammable, of high tensile strength and stronger in impact than conventional screen WIT€» The structural roof is separated by means of wood purlins from an upper aluminum roof to give a clear separation 9" wide for passage of air. A con- tinuous ridge vent is placed above the upper roof. Ail interior partitions will be built of standard corrugated aluminum Sheets set in oxtruded aluminum frames bolted to floor and roof purlins. Except toilet rooms, or other necessarily enclosed areas, all interior partitions will be 15" up from the floor and 6'9" high to allow free passage of air. Corridor doors to rooms will be provided only where required for privacy. Other BuildingConstruction. All buildings except small shelters such as an air and water dispatch building near the air strip.on Parry Island which will be of wood construction, and the power plants on the experimental islands, will be aluminum alloy construction. The power plants on the experimental islands will be concrete as described under Electric Power Supply Systems. There will be certain areas where tent quarters will be provided to take care of temporary requirements, as for example the quarters for 220 personnel on the experimental islands, the space for a possible 200 additional personnel 13.