Wall studs are vertical planks of lumber or metal that create the frame of a building. In corners, multiple studs are grouped together to create the shape of a corner and provide support for the building. Knowing how to properly stud a corner is, therefore, vital to any construction project. Fortunately, the standard three-stud method for corners is a fairly simply process.
Measure the height of the ceiling from the floor. You should have two walls already framed at this point, so subtract 4 inches from your measurement to account for the 2-by-4 planks running along the top and bottom of the frames. Cut your corner planks or "studs" to fit this measurement.
Skip to the next step if you already have one wall frame up. If not, stand the first wall frame straight up and position it where you want. Nail the base plank into the floor. Make sure the wall frame is straight. Push gently on the wall frame to ensure that it is tightly installed.
Stand up the 2-by-4 studs on the inner side of the last stud of the frame where the frame will intersect with another frame to form a corner. Wedge them in, lined up vertically against the last stud. Nail them in securely without leaving any space between them.
Raise the other wall frame. Position it so that it forms a 90-degree angle with the other frame. Make this angle on the side with the three studs and do not leave any space between the two frames. Nail the base plank to the floor. Put several nails through the inner side of the end plank of the second wall, securing it to the three studs at the end of the first wall.