[Roof of a Heavily Damaged Church]

[Roof of a Heavily Damaged Church]

Date: 1952~
Creator: unknown
Description: Photograph of the top of a heavily damaged church building. There is a short tower on the left-hand side that has a window with shattered panes. On the right-hand side of the image, an entire wall of bricks have been ripped off, making the wooden support beams and the inside of the church visible. There is a handwritten note on the back of the photograph that reads, "San Antonio 1st. After fire 11-21-52".
Contributing Partner: Austin Presbyterian Theological Seminary
[Chapel Building Under Construction]

[Chapel Building Under Construction]

Date: unknown
Creator: Walter S. Scott
Description: Photograph of a roofless brick building under construction. There are rafters that surround the small, one-story building, and several workers are building the skeleton of a future completed roof. There is a row of windows at the side of the building, and it is raised from the ground on short stilts. The wide dirt road in the foreground travels across the front of the building as well as the two small houses next to it on the left-hand side. There is an automobile parked at the side of one of the houses. A handwritten note which reads, "Members Building Taylor Chapel" is inscribed below the image, and a typed caption that reads "The Brills" is visible underneath the writing. There is also a typed note on the back of the photograph that reads, "(illegible) Scott and Penn building church at Taylor, the members helping".
Contributing Partner: Austin Presbyterian Theological Seminary
[Church Building Under Construction]

[Church Building Under Construction]

Date: unknown
Creator: unknown
Description: Photograph of the side of a church building in the process of being built. The half-built structure, which spans the entire width of the image, is made of brick. The entire side of the building is lined with half-round windows. The structure does not yet have a roof, however there is a belfry tower built at the front of the building which faces the right-hand side of the image. The front of the building is covered with wood beams and rafters. There are piles of wood along the side of the building. There is a handwritten note on the back of the photograph that reads, "San Benito, 1952 Mexican Church under construction (new building)".
Contributing Partner: Austin Presbyterian Theological Seminary
[Side View of a Building Under Construction]

[Side View of a Building Under Construction]

Date: unknown
Creator: unknown
Description: Photograph of the a side street view of a building being constructed. The front of the building, which is facing the left-hand side of the image, is covered in construction rafters. The side of the building, which is facing the front of the image, is made of brick and is lined with half-round windows. The wide dirt street in front of the building extends from the foreground to the left-hand side of the image. Large palm trees are visible in the far background. There is a handwritten note on the back of the photograph that reads, "San Benito, Construction of new Presb. Church 1952"
Contributing Partner: Austin Presbyterian Theological Seminary
Steel fiber replacement of mild steel in prestressed concrete beams

Steel fiber replacement of mild steel in prestressed concrete beams

Date: January 2011
Creator: Tadepalli, Padmanabha R.; Hoffman, Norman; Mo, Y. L. & Hsu, Thomas T. C. (Thomas Tseng Chuang), 1933-
Description: In traditional prestressed concrete beams, longitudinal prestressed tendons serve to resist bending moment and transverse mild steel bars (or stirrups) are used to carry shear forces. However, traditional prestressed concrete I-beams exhibit early-age cracking and brittle shear failure at the end zones despite the use of a high percentage of stirrups (4.2%). Moreover, producing and placing stirrups require costly labor and time. To overcome these difficulties, it is proposed to replace the stirrups in prestressed concrete beams with steel fibers.
Contributing Partner: UNT Libraries Government Documents Department
[Lamp Hanging from Beams]

[Lamp Hanging from Beams]

Date: unknown
Creator: Bell, Jim
Description: Photograph of a lamp hanging from the point where two wooden beams meet on the ceiling of a building in Clarksville, Texas.
Contributing Partner: Private Collection of Jim Bell
Submarine Plow.

Submarine Plow.

Date: September 11, 1894
Creator: Halton, John
Description: Patent for a simple, durable, and inexpensive submarine plow that has an adjustable beam with a plow on its lower end. The invention is meant to have a beam that is "capable of easier and more effectual adjustment to suit the conditions of the operation being performed" (lines 16-18).
Contributing Partner: UNT Libraries Government Documents Department