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RIGGING DESIGN PROGRAMS
USE THEM IN YOUR DAILY WORK!
Each program provides sample values to show how the program works. You can then enter your own input data over the sample values in the input fields. You can progress from one input field to the next by clicking on the Tab button or by using your mouse. Do not leave any input fields blank. For each run, the input information should be reviewed carefully to make sure that the intended values have been entered. After entering any input data, be sure and click on the CALCULATE button. When you have a run you want to keep for reference, a printable version of the input and output, without color, is available by clicking on the Printable button.
Our goal is to provide rigging programs that calculate accurate answers. Please send us an email if you notice an error in a program or if a program is not executing properly, ie not printing correctly, etc.
Maximum Reach Enterprises provides this information in good faith, without charge. Maximum Reach accepts no responsibility for any damages that may result from the use of any values that are derived from these programs. The program user must verify the accuracy of all output values before using them in any rigging operation.
Programs that provide Crane Studies:
Crane operators, estimators, riggers and rigging engineers can use these four programs to do quick and accurate crane studies.
MAXIMUM REACH:
Enter the crane data, the boom length, the jib length, and the structure height. The program will then calculate the location of the center of rotation of the crane and the maximum reach across the structure, for both the boom and the jib.
Maximum Reach
REACH:
Enter the crane data, the boom length, the jib length, the distance from the center of rotation to the structure and the structure height . The program will then calculate the reach across the structure, for both the boom and the jib.
Reach
OFF CENTER REACH-CONVENTIONAL & HYDRAULIC CRANES:
Of the four programs that do crane studies, I find this one to be the most useful.
Enter the crane data, the jib length, the distance from the center of rotation to the structure, the structure height, the distance across the structure, and the structure width to the pick point. The program will then calculate the boom length required to reach the pick point, with and without a jib.
Off Center Reach-Conventional & Hydraulic Cranes
OFF CENTER REACH-TOWER & LUFFING CRANES:
Enter the crane data, the jib length, the distance from the center of rotation to the structure, the structure height, the distance across the structure, and the structure width to the pick point. The program will then calculate the boom length required to reach the pick point, with and without a jib.
Off Center Reach-Tower & Luffing Cranes
Program to Evaluate Forces while Upending a Vessel:
The Upending program calculates the forces that occur when a vessel is rotated from the horizontal to the vertical. These forces can then be used to determine crane selection, design lifting attachments, design the rigging and tailing hookups, etc.
Program for Upending Forces
Programs to Design Basket Hitches:
The three basket hitch programs have been developed to determine sling lengths and other information required to make a rigging hookup using one or two basket hitches.
Lifting A Vessel with Saddles using Double Basket Hitches
Lifting A Vessel without Saddles using Double Basket Hitches
Lifting A Vessel using Double Basket Hitches and two Longitudinal Spreader Bars
Programs to Design Lifting Lugs:
The following two programs can be used to design or check the design of the end area of a lug, the bearing stress, the combined stress of the lug plate and weld for a force at a constant angle.
They can also be used to calculate the same unknowns where the lugs are used to upend a vessel or piece of equipment from the horizontal through 90 degrees to upright. In this case, as the lift angle increases so does the force on the lug.
Pad Eye - Lifting Lug
Plate Type - Lifting Lug
Programs to Design Spreader Bars:
This program can be used to design or check the design of pipe spreader bars fabricated from 4, 6, 8 and 10 diameter pipe. These spreader bars have one end cap on each end that fit over a pipe insert. They are adjustable for length, for pipe schedule (wall thickness) and for sling angle. The program is applicable for bars where the CG of the load is offset from the center of the spreader bar. Fabrication drawings are included. These spreader bars can be used to do the major share of the lifting on a project, ie, loads up to 300 tons and spreader bar lengths up to 25.
Adjustable Pipe Spreader Bar with End Caps
This program can be used to design or check the design of a spreader bar that has at least four lugs for lifting, one located on top of the bar at each end and one located on the bottom of the bar at each end. It is applicable for bars where the CG is offset from the centerline of the spreader bar. Pre-designed lugs are included. These spreader bars can be used on a project for lifting the light loads or ultra heavy loads, ie, up to +1,200 tons.
Spreader Bars with Lugs on the Top and Bottom
Program to Calculate the Properties of a guy line or cableway:
This program was written to provide a solution to the complex catenary formulae for a cable hanging under its own weight, i.e., as a guy line or unloaded cableway. By entering the input data, the following guy line properties will be computer generated as output data: The tension at the mast, the tension at the deadman, the maximum sag, the point of maximum sag, the cable length and amount of stretch, a plot of the cable profile and the slope of the cable at each end.
Properties of a Guy Line or a Cableway
Other Rigging Tools:
Solving Right Triangles
INTERPOLATION PROGRAM
This interpolation Program can be used for straight-line interpolation between two capacities that are listed with their respective radii. The English version will provide the resulting capacities on 1 increments. It is applicable for radii that are two feet apart up to radii that are 10 feet apart, ie one radius at 70 and the other at 80. The METRIC version will provide the capacities on 0.5 meter increments and is applicable for radii that are one meter apart up to radii that are 4 meters apart. The results of both versions can be printed out for future reference.
Program for Crane Capacity Chart Interpolation - English
Program for Crane Capacity Chart Interpolation - Metric
SAFE WORKING LOAD FOR A SLING BENT AROUND A PIN, SHEAVE, ETC.
This program is based on Macwhytes formulas and can be used to solve for the SWL of a sling when it is bent over a pin, around a trunnion, etc. The program calculates the pin/sling ratios and the efficiency factors, which are then used to reduce the strength of the sling accordingly.
Program for solving the safe working load of a sling
FAQs
How do I learn what each program can do for me? Click the "Help" button in the middle or bottom of the page. The help file contains a definition and an objective for that specific program.
I click on Elevation View, Plan View or Help buttons but nothing happens. Your pop-up blocker is blocking these windows from opening. Open one of the program windows and click on the Help button. The pop-up message bar is just above the program window. Click on the pop-up message bar. Select the option that allows pop-ups from this web site only. Click on the Help button again and you should see the Help window.
How do I print? Click the "Printable" button in the middle or bottom of the page. Move your mouse to the browser menu bar. click on "File" then click on "Print". Click the browser's "Back" button to return to the program. Note: To control how your browser prints click on "File" then click on "Page Setup". You can adjust margins, headers and footers.
How Do I see more of the program on the screen? Move your mouse to the browser menu bar. click on "View" then click on "Text Size". Clicking on "Smallest" gives you the smallest font size and the most characters per line.
Maximum Reach Enterprises
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