{"id":6790,"date":"2026-11-02T05:09:15","date_gmt":"2026-11-02T05:09:15","guid":{"rendered":"https:\/\/www.ggsteelstruct.com\/?p=6790"},"modified":"2026-11-04T06:51:24","modified_gmt":"2026-11-04T06:51:24","slug":"steel-truss-types","status":"publish","type":"post","link":"https:\/\/www.ggsteelstruct.com\/zh\/resources\/steel-truss-types\/","title":{"rendered":"Steel truss types and how to choose one"},"content":{"rendered":"<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"400\" src=\"https:\/\/www.ggsteelstruct.com\/wp-content\/uploads\/2026\/11\/light-steel-roof-truss-erection.webp\" alt=\"Light steel roof trusses under erection\" class=\"wp-image-7264\" srcset=\"https:\/\/www.ggsteelstruct.com\/wp-content\/uploads\/2026\/11\/light-steel-roof-truss-erection.webp 800w, https:\/\/www.ggsteelstruct.com\/wp-content\/uploads\/2026\/11\/light-steel-roof-truss-erection-300x150.webp 300w, https:\/\/www.ggsteelstruct.com\/wp-content\/uploads\/2026\/11\/light-steel-roof-truss-erection-768x384.webp 768w, https:\/\/www.ggsteelstruct.com\/wp-content\/uploads\/2026\/11\/light-steel-roof-truss-erection-18x9.webp 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">A truss turns bending into tension and compression in straight members. The pattern of those members decides efficiency, look and fabrication cost.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"types\">Common types<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>Type<\/th><th>Pattern<\/th><th>Strengths<\/th><th>Typical span<\/th><\/tr><\/thead><tbody><tr><th>Pratt<\/th><td>Verticals in compression, diagonals in tension<\/td><td>Efficient under gravity load<\/td><td>20\u201360 m<\/td><\/tr><tr><th>Warren<\/th><td>Diagonals only, alternating<\/td><td>Fewer members, simple<\/td><td>20\u201360 m<\/td><\/tr><tr><th>Howe<\/th><td>Diagonals in compression<\/td><td>Suits timber; less common in steel<\/td><td>\u2014<\/td><\/tr><tr><th>Pipe truss<\/th><td>Tubular chords and braces<\/td><td>Clean look, good in torsion<\/td><td>30\u201380 m<\/td><\/tr><tr><th>Triangular 3-chord<\/th><td>Pipe, triangular section<\/td><td>Laterally stable<\/td><td>40\u2013100 m<\/td><\/tr><tr><th>Space frame<\/th><td>3D grid of tubes and nodes<\/td><td>Very long spans, two-way<\/td><td>40\u2013120 m<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"is-table-note wp-block-paragraph\">Span ranges are typical.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"depth\">Depth<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A span-to-depth ratio of 10 to 15 is typical for roof trusses. Deeper trusses use less steel but eat clear height and are harder to ship.<\/p>\n\n\n\n<p class=\"is-note wp-block-paragraph\"><strong>Transport first:<\/strong> decide splice positions with the shipping method, not after.<\/p>","protected":false},"excerpt":{"rendered":"<p>Pratt, Warren, Howe, pipe, triangular and space frame trusses compared by span, depth and use.<\/p>","protected":false},"author":1,"featured_media":7264,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_aseo_title":"Steel Truss Types and How to Choose One | GG Steel","_aseo_desc":"Pratt, Warren, Howe, pipe, triangular and space frame trusses compared by span, depth and typical use, with notes on fabrication, transport and cost. Read the guide.","_aseo_noindex":false,"_aseo_og_image":0,"_aseo_schema_type":""},"categories":[30],"tags":[],"class_list":["post-6790","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guides"],"_links":{"self":[{"href":"https:\/\/www.ggsteelstruct.com\/zh\/wp-json\/wp\/v2\/posts\/6790","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ggsteelstruct.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ggsteelstruct.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ggsteelstruct.com\/zh\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ggsteelstruct.com\/zh\/wp-json\/wp\/v2\/comments?post=6790"}],"version-history":[{"count":5,"href":"https:\/\/www.ggsteelstruct.com\/zh\/wp-json\/wp\/v2\/posts\/6790\/revisions"}],"predecessor-version":[{"id":7283,"href":"https:\/\/www.ggsteelstruct.com\/zh\/wp-json\/wp\/v2\/posts\/6790\/revisions\/7283"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ggsteelstruct.com\/zh\/wp-json\/wp\/v2\/media\/7264"}],"wp:attachment":[{"href":"https:\/\/www.ggsteelstruct.com\/zh\/wp-json\/wp\/v2\/media?parent=6790"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ggsteelstruct.com\/zh\/wp-json\/wp\/v2\/categories?post=6790"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ggsteelstruct.com\/zh\/wp-json\/wp\/v2\/tags?post=6790"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}