A four-bend saddle has been fabricated in a length of 1/2-inch RMC to go over an obstruction. Based upon what you see in the photo, determine the position of Mark 1 to lay out this saddle using [tex]22.5^\circ[/tex] bends. Allow for the conduit to be connected to a junction box using locknuts.

Note: The values calculated for this question may be used for additional questions. (Round the answer to the nearest eighth inch.)

Question

06-10-2024
Engineering

College

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A four-bend saddle has been fabricated in a length of 1/2-inch RMC to go over an obstruction. Based upon what you see in the photo, determine the position of Mark 1 to lay out this saddle using [tex]22.5^\circ[/tex] bends. Allow for the conduit to be connected to a junction box using locknuts.

Note: The values calculated for this question may be used for additional questions. (Round the answer to the nearest eighth inch.)

Answer :

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saifmohammad3487 saifmohammad3487 · Answer 1 · 2024-09-14T17:02:35-04:00

Final answer:

Without the photo or specific measurements, a detailed answer cannot be provided for calculating Mark 1's position for a four-bend saddle in RMC. The process involves geometry and estimates from standard electrical charts, factoring in the height of the obstruction and connections to a junction box.

Explanation:

The question deals with the layout and bending of Rigid Metal Conduit (RMC) using 22.5° bends to create a four-bend saddle. The position of Mark 1 is essential for the accuracy of the saddle. This process typically involves some geometry and trigonometry to calculate the position of bends, taking into account the height of the obstruction, the shrinkage factor for each bend, and the spacing between the bends.

The need to connect the conduit to a junction box with locknuts implies considering the appropriate offsets for these connections. Unfortunately, without the actual measurements or the photo referenced in the question, it is impossible to give a specific answer. However, the general formula involves determining the shrinkage per bend, which for a 22.5° bend in a 1/2-inch RMC could be estimated using standard electrical charts or manuals and then calculating the spacing between bends by factoring in the height of the obstruction.