Galvanized Rigid Conduit (GRC) Calc
Galvanized Rigid Conduit (GRC) Calculators
- GRC Conduit Installation Time: Computes the Estimated Install Time for GRC (Galvanized Rigid Conduit) based on the GRC size, length of conduit and level of difficulty.
- GRC Conduit Installation Length: Computes the Length of GRC (Galvanized Rigid Conduit) installed based on an installation time period and level of difficulty.
- GRC Conduit Weight: Compute the weight of GRC conduit based on size and length.
- Rolling Offset: Computes the run and travel distances in a rolling offset.
The Math / Science
GRC stands for Galvanized Rigid Conduit. GRC is the race way material with the thickest walls. The relationship between the weight of the GRC and the size can be seen the following table.
The relationship between install time of GRC. the length, size and level of difficulty can be seen in the following table.
| Weight per 100 ft Length | |||
| Size | Pounds | Kilograms | |
| 1/2" | 82 | 37.2 | |
| 3/4" | 109 | 49.4 | |
| 1" | 161 | 73.0 | |
| 1-1/4" | 218 | 98.9 | |
| 1-1/2" | 263 | 119.3 | |
| 2" | 53 | 350 | |
| 2-1/2" | 559 | 253.5 | |
| 3" | 727 | 329.7 | |
| 3-1/2" | 880 | 399.1 | |
| 4" | 1030 | 467.1 | |
| 5" | 1400 | 634.9 | |
| 6" | 1840 | 834.5 | |
| Hours per Foot Installed | |||||
| Size | Lvl1 | Lvl2 | Lvl3 | Lvl4 | |
| 1/2" | 0.040 | 0.050 | 0.060 | 0.075 | |
| 3/4" | 0.050 | 0.062 | 0.075 | 0.094 | |
| 1" | 0.060 | 0.075 | 0.090 | 0.113 | |
| 1-1/4" | 0.075 | 0.094 | 0.113 | 0.141 | |
| 1-1/2" | 0.081 | 0.101 | 0.122 | 0.152 | |
| 2" | 0.103 | 0.129 | 0.155 | 0.194 | |
| 2-1/2" | 0.120 | 0.150 | 0.180 | 0.225 | |
| 3" | 0.150 | 0.188 | 0.225 | 0.281 | |
| 3-1/2" | 0.180 | 0.225 | 0.270 | 0.338 | |
| 4" | 0.210 | 0.263 | 0.315 | 0.394 | |
Cable and Conduit Installation Calculators
- Electrical Metallic Tubing (EMT) Calculator: This provides the installation time and length estimates and the weight of EMT conduits.
- Galvanized Rigid Conduit (GRC) Calculator: This provides the installation time and length estimates and the weight of GRC conduits.
- PVC Schedule 40 Conduit Calculator: This provides the installation time, length and weight of PVC schedule 40 conduits.
- Metal Clad (MC) Cable Calculator: This provides the installation time, length and weight of metal clad (MC) cable.
- Fiber Optic Cable Loss Budget Calculator: Computes the acceptable dB loss in signal over a fiber-optic network based on the material type, number of connectors and splices and the overall length of the run.
- Voltage Drop Calculator: Computes the voltage drop over a length of cable and provides the needed gauge to keep voltage drop above a threshold.
- Telecommunications Calculator: This provide network and communications functions.
- Rolling Offset: Computes the run and travel distance in a rolling offset
Equations
- GRC Conduit Installation Time KurtHeckman Use Equation
- GRC Conduit Installation Length KurtHeckman Use Equation
- GRC Conduit Weight KurtHeckman Use Equation
- Rolling Offset KurtHeckman Use Equation
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