Production throughput and material yield · Lesson 2 of 4

Production throughput and material yield: materials, standards and design constraints

How AFS's 10 ft x 4 ft sheet, the blank width and the length limits decide how many strips a sheet gives, why a width just past a breakpoint wastes a whole strip, and what the sheet weighs.

You will be able to: Work out strips per sheet from a blank width, spot a width just past a breakpoint, apply AFS's girth and length limits and stock convention, and say what the sheet standards do and do not cover.

9 min · 8 slides · 7 questions

All lessons in this module

Slide 1 of 8

The AFS sheet

AFS quotes and plans from a 10 ft x 4 ft sheet. A strip is cut along the 10 ft length, so its width comes out of the 48 in side.

Every piece ordered through AFS Quick Quote is 10 ft long, one full strip length.

The most AFS can make in one piece is 126 in (10 ft 6 in).

Sources

AFS quote convention - Architectural Flashing Supply
AFS Quick Quote: every piece ordered there is 10 ft long - Architectural Flashing Supply
AFS fabrication limits - materials, thicknesses, bend rules and sizes the shop can make - Architectural Flashing Supply

Videos for this lesson

What this video shows: A university lecture on stock layout and nesting in sheet metal forming and its role in material utilization (from the video's own description). Its context is press-stamping layouts, not AFS's strip planning or equipment.

Video: Lec 18 : Sheet metal forming: Stock Layout-Nesting by IIT Roorkee July 2018, on YouTube. AFS checked its description against this lesson.

Glossary

Strip: A full-length piece sheared from AFS's 10 ft x 4 ft sheet, as wide as the profile's blank width and 10 ft long.
Blank width (girth): The total flat width of a profile before it is folded. AFS's maximum is 48 in, hems included.
Width cliff: A blank width just past a breakpoint (48 divided by a whole number) loses a whole strip per sheet: 12 in gives 4 strips, 12.125 in gives 3.
Coil piece: A piece longer than the 10 ft sheet, listed separately in AFS's takeoff and not nested into strips.
Revised NIOSH Lifting Equation: A NIOSH tool that calculates the risk of work-related musculoskeletal disorders for single and multiple manual lifting tasks.