For precise calculations, consult a structural engineer. Common spans for wood beams in pergolas range from 8 to 20 feet. ![]() How far can pergola beams span? The span of pergola beams depends on their size, material, and load requirements. Typically, a pergola with 4 posts might span 8×8 feet to 12×12 feet, but it’s essential to consult with a structural engineer or builder for a precise assessment. How big can a pergola be with 4 posts? The size of a pergola with 4 posts will depend on various factors, including the materials used, the design, and local building codes. What is the span of a 2×10 cedar beam? A 2×10 cedar beam can span approximately 10 to 12 feet depending on the load and species of cedar. A typical spacing is around 12 to 16 inches apart, but it can vary. How far apart should top beams be on a pergola? The spacing of top beams on a pergola depends on the design and load. What size is a pergola main beam? The size of a pergola main beam can vary depending on the design and load-bearing requirements, but common sizes are 4×6, 6×6, or even 8×8 inches. Additionally, local climate and environmental factors can impact the longevity of the wood used in the beams. Please note that these spans are general guidelines, and it’s essential to consult with a structural engineer or local building codes for precise calculations and to ensure the pergola’s structural integrity and safety. ![]() Keep in mind that these are approximate spans, and the actual span may vary depending on factors such as the wood’s grade, load, and local building codes. Here’s a table summarizing typical pergola beam spans for various beam sizes and wood species.
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