What Is I-Joist in Construction?

What Is I-Joist in Construction? An I-joist is an engineered wood joist invented in 1969 and developed to offer superior strength and stability compared to conventional wood joists. The timber I-joist is composed of top and bottom flanges made from either LVL or solid lumber connected using webs made from OSB (oriented strand board). It […]

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What Is Parallel-Strand Lumber?

What Is Parallel-Strand Lumber? Parallel-strand lumber (PSL) is an engineered wood product made by bonding strands of wood together in parallel using waterproof adhesives with a phenol-formaldehyde base. This allows for the creation of extremely strong timber that can support large loads and span long distances, making it ideal for use in components such as […]

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What Is A Clapboard Houses?

What Is A Clapboard Houses? Clapboard houses are distinctive in their use of horizontal wooden siding, known as clapboards. These boards are thick on one edge and narrow on the other and were widely used in America in the 17th and 18th centuries. The term “clapboard” originates from the Dutch word “klappen,” meaning “to split.” […]

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