Blueprint Reading Basics Worksheet Answers 'link' -

Does the door swing into the room or the hallway? Answer: Look at the arc (the dashed curved line). If the arc is inside the room, the door swings into the room. (For egress codes, it usually swings into the room).

Pro Tip: Always check the revision block before cutting material. That "Addendum 1" date might change a wall location by six inches. blueprint reading basics worksheet answers

Why this matters: An electrician needs to know that an outlet at 48" AFF is a "chair rail" height outlet, not a standard 12" baseboard outlet. If you set the box at 48" from the dirt subfloor, it will be wrong once the concrete or tile goes in. Does the door swing into the room or the hallway

Thick, solid lines that show the visible edges of an object. (For egress codes, it usually swings into the room)