girder

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For more information on girder, visit Britannica.com.

A large or principal beam of steel, reinforced concrete, or timber; used to support concentrated loads at isolated points along its length.

• Building and Machine Parts - girder: horizontal structural member that supports wall; floor joist between piers or columns; beam
• Structural and Decorative Elements - girder: primary horizontal structural member supporting vertical load

For the DC Comics character with this name, see Girder (comics).

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Look up girder in Wiktionary, the free dictionary.

The ceiling of Hinkle Fieldhouse in Indianapolis, Indiana, was constructed of large trusses built of riveted girders.

A girder is a support beam used in construction. Girders often have an I-beam cross section for strength, but may also have a box shape, Z shape or other forms. Girder is the term used to denote the main horizontal support of a structure which supports smaller beams. A girder is commonly used many times in the building of bridges, and planes.

The Warren type girder combines strength with economy of materials and can therefore be relatively light. Patented in 1848 by its designers James Warren and Willoughby Theobald Monzani, its structure consists of longitudinal members joined only by angled cross-members, forming alternately inverted equilateral triangle-shaped spaces along its length, ensuring that no individual strut, beam, or tie is subject to bending or torsional straining forces, but only to tension or compression. It is an improvement over the Neville truss which uses a spacing configuration of isosceles triangles.

See also

• Structural steel
• Wide Flange Steel Materials and Rolling Processes (U.S.)
• Box girder
• Truss
• Universal Beam
• Joist

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Dansk (Danish)
n. - bærebjælke, drager

Nederlands (Dutch)
steunbalk

Français (French)
n. - poutre

Deutsch (German)
n. - Träger, Tragbalken

Ελληνική (Greek)
n. - (οικοδ.) σιδηροδοκός, τραβέρσα, δοκός, δοκάρι

Italiano (Italian)
puntello, trave

Português (Portuguese)
n. - viga (f) (Arquit.), vigamento (m) (Arquit.)

Русский (Russian)
балка, брус, перекладина, ферма (конструкция), радиомачта

Español (Spanish)
n. - viga, soporte, puntal

Svenska (Swedish)
n. - balk (byggn.)

中文（简体）(Chinese (Simplified))
梁, 钢桁的支架

中文（繁體）(Chinese (Traditional))
n. - 梁, 鋼桁的支架

한국어 (Korean)
n. - 대들보

日本語 (Japanese)
n. - 桁, 大梁

العربيه (Arabic)
‏(الاسم) عارضه خشبيه أو معدنيه‏

עברית (Hebrew)
n. - ‮קורת פלדה, קורה, קורה תומכת בגשר‬

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