The EMT Conduit Installation calculator estimates the time to install, the length installed over a set time and the weight of a specified length of Electrical Metallic Tubing (EMT Conduit).
- EMT Conduit Installation Time: Computes the Estimated Install Time for EMT (Electrical Metallic Tubing) conduit based on the EMT size, length of conduit and level of difficulty.
- EMT Conduit Installation Length: Computes the Length of EMT (Electrical Metallic Tubing) conduit installed based on an installation time period and level of difficulty.
- EMT Conduit Weight: Compute the weight of EMT conduit based on size and length.
- Rolling Offset: Computes the run and travel distance in a rolling offset
The Math / Science
EMT stands for Electrical Metallic Tubing (aka thin-wall tubing). EMT is often used as a lower cost solution to galvanized rigid conduit (GRC). EMT is not threaded but can be used with threaded fittings via the use of clamps. EMT is typically made of steel.
The relationship between length of conduit, level of difficulty, size of EMT and the time to install comes from industry standard numbers. The following table is the basis of this calculator.
| Hours per feet Installed | |||||
| Size | Lvl1 | Lvl2 | Lvl3 | Lvl4 | |
| 1/2" | 0.030 | 0.037 | 0.045 | 0.053 | |
| 3/4" | 0.040 | 0.050 | 0.060 | 0.075 | |
| 1" | 0.050 | 0.062 | 0.075 | 0.094 | |
| 1-1/4" | 0.053 | 0.056 | 0.079 | 0.099 | |
| 1-1/2" | 0.056 | 0.070 | 0.084 | 0.105 | |
| 2" | 0.064 | 0.080 | 0.096 | 0.120 | |
| 2-1/2" | 0.070 | 0.087 | 0.105 | 0.132 | |
| 3" | 0.080 | 0.100 | 0.120 | 0.150 | |
| 3-1/2" | 0.100 | 0.125 | 0.150 | 0.188 | |
| 4" | 0.120 | 0.150 | 0.180 | 0.225 | |
The relationship between length of conduit, size of EMT and the weight comes from industry standard numbers. The following table is the basis of the weight estimates in this calculator and it shows the mass / weight value of the EMT per hundred feet length.
| Weight per 100 ft Length | |||
| Size | Pounds | Kilograms | |
| 1/2" | 30 | 13.6 | |
| 3/4" | 46 | 20.9 | |
| 1" | 67 | 30.4 | |
| 1-1/4" | 101 | 45.8 | |
| 1-1/2" | 116 | 52.6 | |
| 2" | 148 | 67.1 | |
| 2-1/2" | 216 | 98 | |
| 3" | 263 | 119.3 | |
| 3-1/2" | 349 | 158.3 | |
| 4" | 393 | 178.2 | |
EMT Conduit Calculators
- Rolling Offset (run and Travel): This computes the travel length of pipe or conduit between two angle fixtures and the linear advancement (run) in a rolling offset.
- EMT Conduit Installation Time: This estimates the amount of time needed to install Electrical Metallic Tubing (EMT Conduit) based on the length of the conduit, the Level of Difficulty and the size of the conduit.
- EMT Conduit Length: This estimates the length of Electrical Metallic Tubing (EMT Conduit) that can be installed based on the Level of Difficulty, the size of the conduit and the amount of time allocated.
- EMT Conduit Weight: This estimates the total weight of Electrical Metallic Tubing (EMT Conduit) based on the size of the conduit (S) and the length (L).
- Weight of Half Inch (1/2") EMT Conduit
- Weight of Three Quarter inch (3/4") EMT Conduit
- Weight of One Inch (1") Electrical Metallic Tubing (EMT)
- Weight of One Inch and a Quarter (1 1/4") Electrical Metallic Tubing (EMT)
- Weight of One Inch and a Half (1 1/2") Electrical Metallic Tubing (EMT)
- Weight of Two Inch (2") Electrical Metallic Tubing (EMT)
- Weight of Two Inch and a Half (2 1/2") Electrical Metallic Tubing (EMT)
- Weight of Three Inch (3") Electrical Metallic Tubing (EMT)
- Weight of Three and a Half Inch (3 1/2") Electrical Metallic Tubing (EMT)
- Weight of Four Inch (4") Electrical Metallic Tubing (EMT)
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