| http://www.w3.org/ns/prov#value | - that are subject to human impact, of sufficient thickness and type for the condition of use? q Are grates or similar type covers over floor openings such as floor drains, of such design that foot traffic or rolling equipment will not be affected by the grate spacing? q Are unused portions of service pits and pits not actually in use either covered or protected by guardrails or equivalent? q Are m
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