HTML Presplit Calc Created by Brent Buffham © 2023 - Currently only available in Metric Units Go Back... Pattern Properties Spacing (m) Bench Height (m) Number of Holes (integer) Hole Properties Perferred Vent Length (m) Angle (°) [vertical = 0°] Sub Drill (m) Diameter (m) Explosive Properties Av. Weight Per Stick (kg) Diameter of Stick (mm) Av. Length Per Stick (m) Number Sticks to Double Up (int) Number Sticks to Triple Up (int) Results Area ● Total Blast Rock Area = 000.00 m^2 Volume ● Hole Diameter Charge Volume = 849.42 L ● Product Diameter Charge Volume = 849.42 L Explosives ● Total Explosives = 000.00 kg ● Hole Charge Length Mass = 849.42 kg ● Charge per meter (excl. 2x and 3x) = 000.00 kg ● Sticks Per hole = 0 units Decoupling Ratio ● Decoupling Ratio = 000.00 pd/hd Powder Factors ● Powder Factor Area = 000.00 kg/m^2 Lengths ● Lineal Meters = 150.0 m ● Charge Length Per Hole = 000.00 m ● Hole Length = 13.2 m ● Total Drill Meters = 849.42 m ● Total Charge Meters = 000.00 m This calculator was first published as "BlastCalc" on the Apple iOS App Store as a native iPhone and iPad app in 2010. The publisher was Chin-Apse Pty. Ltd. This is app was something of great use to many people. It is a simple calculator of common blasting ratios and statistics. modern browsers support HTML and CSS better now, as such the app that died on the Apple Store can now live again. Created code is in HTML/JS/CSS. Thank you. Brent Buffham © 2021.