filler joist

filler joist: несущая балка (стальная) заполнения между прогонами перекрытия

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стальная прокатная балка междуэтажного перекрытия

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Nail (fastener) — A pile of nails. In woodworking and construction, a nail is a pin shaped, sharp object of hard metal or alloy used as a fastener. Formerly wrought iron, today s nails are typically made of steel, often dipped or coated to prevent corrosion in… … Wikipedia
Stairway — Stairs redirects here. For other uses, see Stairs (disambiguation). Staircase redirects here. For other uses, see Staircase (disambiguation). This article is about the construction. For the song by Led Zeppelin, see Stairway to Heaven. Stairways… … Wikipedia

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