- Arrange all mechanical, electrical, fire alarm, lightning protection and other system components to create an orderly appearance that integrates with the wall system.
- Do not expose conduits, cables, piping, lightning protection components, etc. on exterior walls; if unavoidable in renovations, finish these elements to match the adjacent wall surface.
- Avoid visual clutter and where surface-mounted elements are required they shall match the wall color.
Wall systems must be designed for life cycle cost effectiveness and comply with Installation Facilities Standards (IFS) for Facility Groups. Walls shall be designed and constructed with durable exterior finishes appropriate for the climate region with detailing that will not show excessive weathering or wear during its life cycle for the specific application. Materials must withstand operations and activities and must tolerate periodic cleaning. Only low-maintenance materials are permitted.
Use of secondary accent materials to complement primary material is encouraged to create a professional-quality appearance and to reduce costs. For typical applications, the use of materials should not be extravagant and increase costs.
All secondary elements of a wall system such as accent materials, relief, lintels, window and door openings, downspouts, joints, etc., shall be coordinated with the visual and physical characteristics of the primary wall material.
Following the directives of UFC 1-200-02, evaluate the life-cycle cost effectiveness of passive building components that provide shading, such as wall-mounted fixed shading. Wall systems should enhance indoor environmental quality and must promote thermal comfort, moisture control and daylighting.
Wall materials and detailing should emphasize resource efficiency, respond to the local climate and comply with Base standards. Materials shall be appropriate for the specific exposure or orientation of the wall. Material specifications for walls should include consideration of environmentally preferable products, products with recycled content and biologically-based products.
UFC 1-200-01 General Building Requirements http://www.wbdg.org/ffc/dod/unified-facilities-criteria-ufc/ufc-1-200-01
UFC 1-200-02 High Performance and Sustainable Building Requirements http://www.wbdg.org/ffc/dod/unified-facilities-criteria-ufc/ufc-1-200-02
UFC 3-101-01 Architecture http://www.wbdg.org/ffc/dod/unified-facilities-criteria-ufc/ufc-3-101-01