Steel Bending & Rolling

p. 205.274.7760f. 205.274.7720

www.hornsbysteel.net

57 Arena drive • Cleveland, Al 35049p. 205.274.7760 • f. 205.274.7720www.hornsbysteel.net

•RolledSteel•CurvedBars•CurvedBeams

•TubeBender andRoller

•MetalBender•Architectural•Industrial•Structural•Recreational•Mining•Bridges•Buildings•ArchedRoof•SpiralStair Stringers

•Patios

As the popularity of using curved steel in the building industry has risen, so has the need for shops that specialize in bending and rolling steel. Hornsby Steel Inc. is a leading steel manufacturing company specializing in the curving and bending of structural steel for architectural, cosmetic, and engineering purposes. Since opening nearly seven years ago, we have succeeded in creating a niche for ourselves within the fabricating industry by developing an expertise in spirals along with other complicated shapes.

Hornsby Steel Inc. handles STEEL BENDING & ROLLING jobs for of all sizes, large & small, for many major industries. Our senior management team has over 100 years of combined experience making Hornsby Steel an excellent choice for all of your rolling and bending needs. We are a proud member of the AISC (American Institute of Steel Construction) and we strive for excellence to go above and beyond our customers’ needs and expectations. Our capabilities, along with state of the art technology, allow us to efficiently form and shape complicated bends to meet the most demanding project schedules. Our products are manufactured under the most rigorous quality procedures to ensure our clients a finished product of exceptional precision and craftsmanship. We provide first hand assistance whether you are in the design and prototype phase or you need assistance starting from scratch. We are the complete solution to all of your steel bending and curving needs.

Hornsby Steel’s mission is to continue expanding and promoting the use of curved and bent steel in new markets. Our goal is to form strong business relations with architects, engineers, steel fabricating shops and construction companies.

We are providing this guide to better help you understand the unlimited possibilities when it comes to bending and curving steel and also give you firsthand knowledge of the process and terminology.

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A: AmericanInstituteofSteelConstruction(AISC): The American Institute of Steel Construction is a not-for-profit technical institute and trade association for the use of structural steel in the construction industry of the United States. It is headquartered in Chicago, IL. The AISC supplies specifications, codes, technical assistance, quality certification, and standardization.

Arc: The curved portion of a bend.

ArcLength:The length of a bent/ rolled surface.

B: BendRadius: The arc of the bend itself, usually taken at the centerline. The distance from the center of curvature to the centerline (axis) of the pipe, expressed as a number multiplied by the pipe or tube size. For example, the bend radius of a 5 × D bend for a 2-inch nominal pipe size (NPS) pipe or a 2-inch tube is 10 inches (see centerline radius).

C: CentertoCenter: The distance between the theoretical or calculated centers of two adjoining bends on the same plane. Also used for diametric measurement between the centerlines of two tangent points of a bend (i.e. 180° bend, for which the center to center distance will be equal to twice the centerline radius).

CenterlineRadius: The distance from the center of the curvature to the centerline (axis) of the pipe.

Chord:The straight distance measured between the centerline points of any two points of a bend.

ColdBending(“Pyramid”Rolling): A steel member is placed in a machine and curved between three rolls.

D: DegreeofBend:The angle to which the bend is formed.

Diameter: A straight line passing through the center of a circle.

Distortion: A change from original shape and dimension. Note: Occurs in every rolled part to some degree.

Ductility: The ability of the material to deform without fracture. This is measured by elongation of reduction of area in a tensile test.

H:HotBending: Bending is achieved by applying heat directly to material by internal or external flame, or heating in a furnace.

I: InductionBending: An electric coil heats a short section of a structural member, and then it is drawn through a process similar to rotary-draw and cooled with water directly after.

O: Off-Axis: Material rotated out of square in a cross sectional view.

Ovality: The distortion of the cross section of pipe or tube from its normal (round) shape usually expressed as a percentage of the difference between major and minor axis.

P:PointBending/GagPressing: Also referred to as “Ram Bending,” the bend is achieved by applying a select number of point loads at varying increments along the length of the steel member.

R: Radius: A line segment that joins the center of a circle with any point on the materials circumference (see centerline radius – chart on next page).

Rise/MidOrdinate:The distance of offset between the mid point of a chord and an arc, perpendicular to the chord.

Rotary-DrawBending: The structural material is clamped into a die and then drawn around the die and over a mandrel until the bend is formed.

S: S-Curve: Bends occur in the same plane, but in opposite directions.

Slope: Calculated as the rise over the run of a segment.

Spirals: Bends occurs in a plan view with rise in elevation view.

SynchronizedIncrementalColdBending: Performed by applying pressure in a highly synchronized fashion at several locations along the steel member.

T: Tangent: Straight section of material on either side of the bend or arc. May be any length. In order to make the bend itself, there has to be sufficient material at each end during the bending process. Excess may be trimmed after.

TangentPoint: The point at which the bend is started or ended.

W: Wall: The thickness of tubular material, usually expressed as “nominal” or “minimum.”

WallThickness: The thickness of the material.

Wrinkles: Definite folds, creases or ripples formed on the surface of the pipe during bending operation.

Y: YieldPoint:The point at which material will deform permanently during bending.

YieldStrength:The stress at which a material exhibits a specified deviation.

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GLoSSARY

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JuLY2012Hornsby Steel Inc. was nominated by the Birmingham Business Alliances to receive the Small Business of the Year award. This award is given to a small business in the Birmingham area that has shown operational excellence, innovation, customer service, financial success, employment growth, and community involvement. This award is promoted by the Birmingham Business Alliances to acknowledge the creativity and energy of entrepreneurs, business leaders, and small businesses of the Birmingham area. WInTeR2011Hornsby Steel Inc. featured in the Dynamic Columns newsletter for the Structural Engineers Association of Alabama. Mr. David Hornsby, president of Hornsby Steel Inc., wrote a guest article describing the importance, terminology, and expectations of the steel curving and bending industry. (below) OCTOBeR2011Hornsby Steel Inc. featured in the October 2011 edition of the prestigious AISC (American Institute of Steel Construction) magazine Modern Steel Construction. (above)

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GeoMeTRY

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The graphic above depicts a simple single line drawing of the circular geometry components that relate to most bending applications. When specifying and detailing curved steel, there are a minimum number of components of this circular geometry that must be dimensionally specified. These components can be specified in different minimum combinations that will allow the bender-roller to generate other required information for processing. Someexamplesofthecombinationsareasfollows:

RadiusandArc: The most basic information required for a bender-roller to curve steel.

ChordandRise: Both dimensions, taken from the same work points, allow the bender-roller to calculate radius and arc.

RadiusandDegree/Angle: Degree/angle, in conjunction with bend radius, allows the bender-roller to calculate arc.

RadiusandChord: Both dimensions, taken from the same work points, allow the bender-roller to calculate degree/angle or arc.

RadiusandRise: Both dimensions, taken from the same work points, allow the bender-roller to calculate degree/angle or arc.

Additional information for bending may be required for processing depending on fabricated member requirements. For example, if tangents are required, the length of tangents needs to be provided separately from other dimensional components.

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TRoY

STATe

unIveRSITY

ARTICLeS

neWS—MeDIA

JuLY2012Hornsby Steel Inc. was nominated by the Birmingham Business Alliances to receive the Small Business of the Year award. This award is given to a small business in the Birmingham area that has shown operational excellence, innovation, customer service, financial success, employment growth, and community involvement. This award is promoted by the Birmingham Business Alliances to acknowledge the creativity and energy of entrepreneurs, business leaders, and small businesses of the Birmingham area. WInTeR2011Hornsby Steel Inc. featured in the Dynamic Columns newsletter for the Structural Engineers Association of Alabama. Mr. David Hornsby, president of Hornsby Steel Inc., wrote a guest article describing the importance, terminology, and expectations of the steel curving and bending industry. (below) OCTOBeR2011Hornsby Steel Inc. featured in the October 2011 edition of the prestigious AISC (American Institute of Steel Construction) magazine Modern Steel Construction. (above)

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Steel Bending & Rolling

Hornsby Steel, inc.Steel Bending & Rolling

57 Arena drive • Cleveland, Al 35049 p. 205.274.7760 • f. 205.274.7720

www.hornsbysteel.net

AlSo SeRving CentRAl AmeRiCA, SoutH AmeRiCA & tHe CARiBBeAn