MIL-PRF-32504
4.6.8.1 Sunlight resistance test: Subject shelter weather fabric, insulation liner material and findings
samples to testing in accordance with Mil-Std 810 Section 505.5, Cycle A1, Procedure II. Verify that
there is no visible deterioration, cracking, crazing, blooming, chalking or appreciable color change on any
exterior shelter component. The shelter materials shall show no evidence of structural damage,
degradation or permanent deformation. After performance of accelerated weathering or UV effects, the
weather barrier fabric shall show no signs of performance degradation in Breaking Strength, Coating
Adhesion, Tongue Tear, Grab or Strip Tensile, Flame Resistance or Dead Load Capacity.
4.6.9 Sand and dust resistance inspection: Inspect a fully erected shelter, in blackout configuration, for
any openings larger than 1 square inch that would allow entry of blowing sand and dust.
4.6.10 Mildew and fungus resistance verification: Perform one mildew and fungus test each or verify
by alternative analysis.
4.6.10.1 Alternate mildew and fungus resistance test: Meet the criteria on ANSI/AATCC 30,
Fungicides, Evaluation on Textiles: Mildew and Rot Resistance of Textiles. Ensure that all natural and
synthetic materials do not support direct attack and do not break down mechanically due to fungal and
mildew propagation.
4.6.10.2 Mildew and fungus alternative analysis: Demonstrate materials and manufacturing processes
do not contain compounds that will support mildew and fungus growth and are not susceptible to
deterioration by mildew and fungus.
4.6.11 Environmental acids verification: Use ISO 105-E05, Textiles, Tests for Color Fastness, Part
E05, to demonstrate compatibility with environmental acids, such as acid rain and bird drippings.
4.6.12 Varying terrain evaluation: Evaluate the shelter design and construction details for compatibility
with variations in terrain up to 1.5 percent in width and length of the shelter. Pay particular attention to
purlin connections, Roll-up Door configuration and wall/roof shear cables to ensure that allowances are
made for variations in grade level. When possible, select demonstration construction site to induce
elevation variation within the 1.5 percent parameter.
4.6.13 Petroleum, oil and lubricant resistance verification: Shelter vendor shall supply certification
from independent industry organizations that end products used in the shelter components are resistant to
petroleum products, military grade fuels, lubrication oils and common solvents.
4.6.14 Transportation environment compatibility verification: Initial condition shall be a shelter in the
`packed for transportation configuration. Unpack shelter and visually inspect for abraded areas, cuts,
tears or rips, especially in the fabric areas that contact metal components. Verify shelter and framework
fasteners, adjusters and connectors operate smoothly. Erect the shelter and verify no damage, such as
broken or non-functional components and abrasions that affect performance. This may be combined with
any other shelter erection demonstration.
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