Structural Design. Design in accordance with MIL-HDBK-1002 series,
Structural Engineering. Base an economical structural system on facility
size, projected load requirements, quality of local available materials, local
permafrost conditions. Design structural systems to support roof-mounted
and/or suspended loads, when required.
Lateral Loads. Design buildings and towers (antenna supports) to
withstand wind and seismic loads appropriate to the region in which they are
to be constructed. Refer to MIL-HDBK-1002/2, Structural Engineering - General
and NAVFAC P-355, Seismic Design for Buildings. Seismic analysis of
Government-furnished buildings and antenna supports is not required.
Antenna Supports. Before undertaking unique antenna support
designs, consider the use of existing commercial products suitable for the
purpose. Navy standard designs for UHF/VHF and ASR antenna supports are
available. See Figure 1 and Figure 2.
styles and materials as approved by the ordering authority. Unless otherwise
directed, design unattended facility buildings using concrete, concrete
masonry, pre-engineered metal, or premanufactured metal or
fiberglass-reinforced plastic. NAVFAC policy requires materials, equipment,
and construction methods that provide maximum overall economy consistent with
functional and aesthetic requirements, reasonable comfort, and sound
architectural and engineering practices. Materials, equipment, and methods
used should result in low costs consistent with economic maintenance for the
required use and life expectancy of the facility. Refer to MIL-HDBK-1001/2,
Materials and Building Components.
Reflective Surfaces. To prevent mirrorlike reflections from
building surfaces to aircraft in flight, provide roofs and other external
surfaces with a specular reflectance compatible with the location of the
building on the airfield. If the building is so located that glare may be an
operational hazard, provide the critical surfaces of that building with a
light reflectance of not more than 10, measured at an angle of 85 degrees in
accordance with American Society for Testing and Materials (ASTM) D 523,
Standard Test Method for Specular Gloss.
Floors. Construct ground level floors with reinforced
concrete on a
compacted subgrade in accordance with MIL-HDBK-1001/2. Elevated
are directly related to the type of structural system selected.
finished floor elevation is at least 4 inches above the adjacent