Structural beam bending is often done for the purpose of cambering. (Camber is the amount of deflection provided in the opposite direction of loadings.) An excellent article in Modern Steel Construction, $ave More Money (March 2008), states that “the minimum length of a beam to be cambered is about 25 ft. Why? Because the fabrication jig . . . → Read More: Structural Beam Bending: $aving More Money When Cambering Beams
Some years ago, the Steel Quiz of Modern Steel Construction asked “Which of the following camber ordinates for a 30ft W16x26 beam are not recommended? a. ¼ in., b. ½ in., c. 1-1/2 in, d. 2 in, e. 5 in.”
The editors answered that “a, b, and e. Usually cambers of ¾ in. or less are avoided . . . → Read More: Cambering Steel Sections: Cambering Machines and Section Benders.
Mock-ups involving structural steel bending and steel plate rolling can ensure that the resulting structure will meet everyone’s expectations.
Particularly because curved steel is so often incorporated in exquisite architecture, the demands placed on companies that specialize in bending and rolling steel can be extraordinary. AESS (Architecturally Exposed Structural Steel) becomes the norm with the accompanying stringent . . . → Read More: Mock-ups For Structural Steel Bending and Steel Plate Rolling
At the North American Steel Construction Conference held on May 11 to May 14, 2011, we learned from Bill McEleny, Director of the National Steel Bridge Alliance, that the AASHTO construction specification has recently been revised to allow cold cambering of rolled beams.
Article 220.127.116.11.6 has been revised to read as follows – “Camber for rolled beams . . . → Read More: American Association of State Highway and Transportation Officials (AASHTO) Revises Beam Bending Standards.
As far as the bending of pipes is concerned, both grades of steel can be curved equally well. The differences derive from the applications for each grade.
A53 is pressure tested for liquid and gas flow so is best suited for those applications. A500 is not pressure tested, but is suitable for structural applications where nothing is . . . → Read More: What Grade of Steel Is Better For Bending Pipes? A53 or A500?
OEMs often face the decision of whether to make component parts in house or to subcontract them to outside vendors. An analysis of a company’s core competencies often dictates what items to outsource and what to retain. Furthermore, a company’s business plan might specify that the company do as much as possible in house, especially if . . . → Read More: When Do Original Equipment Manufacturers (OEMs) Outsource the Bending of Pipes?
The American Institute for Steel Construction (AISC) specifies the standards for steel construction in its Code of Standard Practice for Steel Buildings and Bridges (COSP). The COSP defines the “the trade practices that shall govern the fabrication and erection of the Structural Steel” . . . “in the absence of specific instructions to the contrary in . . . → Read More: How Do the Tolerances for Structural Steel Construction Apply to Companies that Specialize in Structural Steel Bending?
There is not a mathematical formula for determining the minimum bending radius of steel sections. To better explain this, lets look at bar bending. Steel is curved using a cold-roll bending process. Steel sections are put into a section bender (also called an “angle roll”) with a three or four roll configuration. Rollers put force against . . . → Read More: Minimum Bending Radius When Bending Bars of Steel
When considering how information is communicated between different firms/companies, CAD or Computer Aided Design is probably one of the biggest milestones in the history of Industry. In the bending/rolling industry, the most important dimensions to convey of any part or structural member are the part’s radius and arc length. These are two specifications that are easily . . . → Read More: Specifying Multi-Radius Bending: CAD to the Rescue