A wooden beam is fabricated by nailing together three pieces of dimension lumber as shown. The cross-sectional dimensions of the beam are also shown. The centroid is 3.4 in. below the top surface of the beam, and the moment of inertia about the z axis is 230.9 in.4. The beam must support an internal shear force of V = 365 lb. If each nail can provide 120 Ib of horizontal resistance, determine the maximum spacing s for the nails. 2 in. 4 in. 2 in. 2 in. 8 in. O 4.86 in. 8.32 in. O 7.91 in. 9.36 in. O 5.59 in.
A wooden beam is fabricated by nailing together three pieces of dimension lumber as shown. The cross-sectional dimensions of the beam are also shown. The centroid is 3.4 in. below the top surface of the beam, and the moment of inertia about the z axis is 230.9 in.4. The beam must support an internal shear force of V = 365 lb. If each nail can provide 120 Ib of horizontal resistance, determine the maximum spacing s for the nails. 2 in. 4 in. 2 in. 2 in. 8 in. O 4.86 in. 8.32 in. O 7.91 in. 9.36 in. O 5.59 in.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:A wooden beam is fabricated by nailing together three pieces of dimension lumber as shown. The cross-sectional dimensions of the
beam are also shown. The centroid is 3.4 in. below the top surface of the beam, and the moment of inertia about the z axis is 230.9 in.4.
The beam must support an internal shear force of V = 365 Ib. If each nail can provide 120 Ib of horizontal resistance, determine the
maximum spacing sfor the nails.
2 in.
4 in.
2 in.
2 in.
8 in.
O 4.86 in.
8.32 in.
O 7.91 in.
9.36 in.
O 5.59 in.
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