Certified Pipefitter Journeyman Exam

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A set of blueprints calls for a pipe run to change direction vertically upwards and then turn 90 degrees to the North. On an isometric drawing where the north arrow points to the upper-right of the page, how would this sequence be represented?

A horizontal line moving left, then a vertical line moving up. A vertical line moving up, then another line moving towards the upper-right. A line at a 30-degree angle up and to the right, then a vertical line. A vertical line moving down, then a horizontal line moving left.

Correct Answer:

A vertical line moving up, then another line moving towards the upper-right.

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