What was the naval base at Guantánamo Bay used for in the twenty-first century?

Use the Steel Construction Manual to determine the plastic moment capacity, Mp, of a W24x131 beam made of A572 Grade 42 steel.

Although suburban communities were segregated in the 1950s, today, communities such as Levittown on Long Island are completely racially integrated. 

Use the Steel Construction Manual to determine the plastic moment capacity, Mp, of a W18x106 beam made of A992 steel.

A WT6x36 beam made from A992 steel would be classified as _______.

Determine the nominal flexural strength, Mn, of a W8x31 for a simple span of 20 ft with continuous lateral support. Use Fy = 75 ksi and Cb = 1.0.

Using LRFD, determine the design shear strength of a W12x120 made from A992 steel.

Use the Steel Construction Manual to determine the plastic moment capacity, Mp, of a W24x131 beam made of A913 Grade 60 steel.

A W8x31 beam made from A992 steel would be classified as _______.

Why did Los Angeles’s population increase significantly during the 1920s?