To develop the blank flat length for a cylinder rolled from sheet or plate is quite simple:
Essentially, you should calculate the centerline arc:
(Outside Diameter – Thickness) x 3.1416 = Length of Plate Required
(Inside Diameter + Thickness) x 3.1416 = Length of Plate Required
Note: Additional plate may be required depending on the material thickness and the machinery . . . → Read More: How to Develop the Blank Flat Length for a Cylinder
When designing for the use of rolled steel shapes in any application, architects and engineers must take into consideration the fact that most bending and curving processes require a certain length of material on each end of the curve. This length of un-used, wasted material is required as pickup, in order for the machine to properly . . . → Read More: Pickup/Waste Considerations When Designing with Rolled Steel Shapes
Without the help of mill markings to identify a given steel beam, you should measure the height (A), the flange width (B), the flange thickness (C) and the web thickness (D). With that information you can go to any number of steel service center catalogues or engineering guides to match the measurements with the beam name. . . . → Read More: How to Identify a Steel Beam Size
The Actual outside diameter (OD) of a pipe is larger than its name: Nominal (nominal means “in name only” from Middle English nominalle meaning “of nouns). Use the table to the right to cross reference the Actual OD (outside diameter) of the pipe to the Nominal Pipe Size. For pipes larger than 12″, the Actual OD . . . → Read More: How to Check the Diameter of a Metal Pipe
Providing one or more straight tangents is a common requirement involving curved steel sections. Providing a tangent where two curved steel members meet is also sometimes required.
The question arises: how do you know when a tangent is truly tangent to a radius?
The leader lines line up
If adjacent dimension leader lines fall exactly over one another, then the adjacent arcs/lines are tangent.
If . . . → Read More: How Do You Know When a Tangent Is Truly Tangent to a Radius?