Given this paragraph about the JW Marriott building in Downtown Houston, what was the framing made of and how tall was it?

Samuel Fain Carter, the founder of Lumberman's Bank in Houston, commissioned the architecture firm of Sanguinet and Staats to design a sixteen-floor, steel-framed building on Main Street at the corner of Rusk Street in Houston. The Fort Worth-based Sanguinet and Staats had already been building skyscrapers in various cities in Texas, and was building a reputation for this type of structure.In 1909, the building had an estimated cost of $650,000. Carter planned to finance construction through issues of equity and debt, stipulating that he would restrict bonds to $400,000 in value. The Rice Institute agreed to purchase up to $200,000 in bonds.

The building used steel framing and was 16 floors.