There is a calculator that will layout any Staircase at any angle or height and it will give you the exact ANGLE of the stairs, total number of lands, the width of lands, the riser heigth, total length of the DIAGONAL run and the DIAGONAL distance from toe to toe, by picking any of three options, *Run & Rise, *Rise & Degree, *Run & Degree, (Click on the X23STAIRS attachment below), and you don,t need to know the math. It also does handrail layouts, straight and spiral. This is a TRUE Hand Held LAYOUT CALCULATOR. I consider this unit a tool rather than a computer because you always have it nearby and it is an excellent Companion for the Bench, Shop, Field and Office. It will layout just about anything including *Intersecting TEE's including the HOLE layout, *Cone's, *Square to Rounds, *Round Elbows, *Pipe, Tube & Sheet Metal Round Offsets, *Custom Kitchen & Fireplace Hoods, *Handrails, *Crickets & Saddles and much more. Its very user friendly. It asks you for specific Inputs by NAME and gives you specific outputs by NAME, you don,t have to guess at what it's trying to ask or tell you. It always reads dimensions in DECIMAL form 1st, then in FRACTIONAL Form 2nd, to the closest 1/32",+/- 1/64", (this can be changed to your preference I.E. to the closest 1/16", 1/8", 1/4" etc., what ever you can read easily). This is for the person that doesn't know his/her Decimal readouts. It also has Utility programs for *Drill & Tap sizes, *Metric Conversion, *Arc's & Radius's, *Solves Oblique & 90 deg. Triangles, *Pulley sizes including RPM and Belt lengths and more. A good tool for company shop employee's to have. This TOOL will easily save time on Bench & Field Layout. Click on the WebSite below to see more about this tool, you can view all the pages from the manual which was written to be used like a computer Monitor if needed for Visual Instruction, direction and hole Layouts. REMEMBER, you don't need to know the math. Be sure to read the "NOTES" in the Layout Manual Page section, they help things make sense. These programs were actually used to layout these fittings & handrail below. The Square to Round program was used on the 1st item. The Radius Stretch, Round Elbow & the Square to Round programs were used on the Jet Engine Test Cell Exaust, (ready to be insulated). The Modual2 & the 90 deg. Triangle programs were used on the handrails fabricated by a local Custom Sheet Metal Shop in San Diego, CA. (Excellent crafstmanship). The burns were taken off the welds with low heat and straight phosphoric acid (mild stuff). No welds were ground!! I was blown away when I saw these handrails. This was one of four rails, who ever did the welding was an artist! This tool is NOT a toy!!
http://www.sheetmetallayoutcalculator.com