RigCalc

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Resultant Force

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Angle: degrees
Load: lbs.

Resultant Force: lbs.


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Pipe Weight

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3/4" Pipe

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Schedule 40 pipe


Pipe Length: ft. 


Weight: lbs.
 

1" Pipe

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Schedule 40 pipe


Pipe Length: ft. 


Weight: lbs.
 

1-1/4" Pipe

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Schedule 40 pipe


Pipe Length: ft. 


Weight: lbs.
 

1-1/2" Pipe

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Schedule 40 pipe


Pipe Length: ft. 


Weight: lbs.
 

2" Pipe

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Schedule 40 pipe


Pipe Length: ft. 


Weight: lbs.
 

Shockload

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Falling Distance: ft.
Stopping Distance: ft.
Weight: lbs.

Shockload: lbs.


Convert

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Meters to Feet

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Meters


Feet


CMs to Inches

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Centimeters


Inches


MMs to Inches

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Millimeters


Inches


kNs to Pounds

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KilloNewtons


Pounds


kGs to Pounds

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KilloGrams


Pounds


Convert

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Feet to Meters

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Feet


Meters


Inches to CMs

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Inches


Centimeters


Inches to MMs

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Inches


Millimeters


Pounds to kNs

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Pounds


KilloNewtons


Pounds to kGs

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Pounds


KilloGrams


Convert

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to nearest 128th


Decimal value


Fraction   / 


Bridle Lengths

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V1: Feet     V2: Feet
H1: Feet    H2: Feet

L1: Feet     L2: Feet


Design Factor

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BS: lbs.    Load: lbs.
DF:
__________________________

DF:    BS: lbs.
Max Load: lbs.


D:d Ratio

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Tread dia. of sheave is inches
Diameter of Cable or Rope
3/32" 1/8" 5/32" 1/4" 3/8"
7/16" 1/2" 5/8" 3/4" 7/8"

D:d ratio is :1

Ladder Flight

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Performer weight: lbs.
Operator weight: lbs.
Height of drop: feet

Acceleration: ft/sec2

Cable Tension: lbs.

Time of drop: seconds

Horse Power

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Max speed of lift: fps
Weight to be lifted: lbs.
Acceleration time: seconds


Adjusted weight: lbs.
to account for overcoming inertia
Horse Power:  

Fleet Angle

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Distance: feet
Offset: inches

Fleet Angle: degrees


Max Offset

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at 1.5 degrees


Distance: feet

Offset: inches


Bridle Tension

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V1: Feet      V2: Feet
H1: Feet      H2: Feet
Load: lbs.

Tension on L1: lbs.
Tension on L2: lbs.
Bridle Angle: degrees

3 Point Bridle

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PT 1  X:   Y: Z:
PT 2  X:   Y: Z:
PT 3  X:   Y: Z:
BP     X:   Y: Z:
BP = Point where the 3 bridle legs meet
Load: lbs. 

L1 Length: Ft. Tension: lbs.

L2 Length: Ft Tension: lbs.

L3 Length: Ft Tension: lbs.


Breastline Tension

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V1: Feet      H1: Feet
Load: lbs.

Horizontal Force: lbs.

Deadhang Tension

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on one end of a truss


  

V1: Feet      H1: Feet
Load: lbs.

Tension on L1: lbs.

Center of Gravity

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for Two Loads on a Beam


  


Span: Feet
Load 1: lbs.    Load 2: lbs.

Side 1: Feet   Side 2: Feet

Leg Tension - Simple

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D1: feet     D2: Feet
Load: lbs.

L1: lbs.    L2: lbs.

Leg Tension - Distributed

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D1: Feet        D2: Feet
Span: Feet
Load 1: lbs.    Load 2: lbs.

L1: lbs.    L2: lbs.

Leg Tension - Complex

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D1: Ft   D2: Ft  D3: Ft
Span: Ft
Load 1: lbs.     Load 2: lbs.
Load 3: lbs.

L1: lbs.    L2: lbs.

Counterweight Calc

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Total weight needed:  lbs.
Enter weights of bricks in second column, starting with your lightest bricks.


   lb. bricks
   lb. bricks
   lb. bricks
   lb. bricks
   lb. bricks


CW Brick Weight

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Cast Iron Bricks

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Width of bricks: inches
Length of bricks: inches
Thickness of bricks: inches

Weight is: Pounds  

Steel Bricks

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Width of bricks: inches
Length of bricks: inches
Thickness of bricks: inches

Weight is: Pounds  

Lead Bricks

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Width of bricks: inches
Length of bricks: inches
Thickness of bricks: inches

Weight is: Pounds  

About

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Ver. 2.11.04.28

Author:
Delbert L. Hall, Ph.D.
President of D2 Flying Effects LLC
Professor of Theatre at East Tennessee State University
ETCP Certified Rigger - Theatre
ETCP Recognized Trainer


Disclaimer:
The equations on the D2 RigCalc site are intended for professional riggers who understand them and know how to interpret the results. Delbert L. Hall and D2 Flying Effects make no claims or warranties about the accuracies of the results from these equations. Anyone using these pages accepts full responsibility for how they use the results and agrees to hold Delbert L. Hall and D2 Flying Effects harmless for any errors or results of any errors that may result from the use of these equations.