| http://www.w3.org/ns/prov#value | - In cases in which some sort of flooring must be made, and it is not feasible to use cement, such as the case of a lake, etc., Sidrei Taharah, cited in Pischei Teshuvah,2 suggests that narrow planks, each of which in itself is too narrow to sustain the weight of a person, should be placed side by side to form a flooring.
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