A bridge system is provided that utilizes foundation structures that are formed of the combination of precast and cast-in-place concrete. A method of constructing the combination precast and cast-in-place concrete foundation structures involves receiving at a construction site a precast concrete foundation unit having elongated upright wall members that define a channel therebetween, and multiple upright supports located within the channel; placing the precast concrete foundation unit at a desired use location; delivering concrete into the channel while the precast concrete foundation unit remains at the desired use location; and allowing the concrete to cure-in-place such that the elongated upright wall members are connected to the cured-in-place concrete by reinforcement embedded within both the cured-in-place concrete and the upright wall members. The bridge units may be placed before the pouring step to embed the bottoms of the bridge units in the cast-in-place concrete.

A post-tensioned concrete cap foundation has helical anchors with pipes having several helical discs welded around the pipe perimeter to spin drill deep into subsurface soils or other soft materials with holes in the pipe for high pressure-grouting in place. The helical anchor pipes include a tensioning element for pulling and post-tensioning the helical anchor. The helical anchors are tension anchors which can be converted to compression anchors. The helical anchors in tension serve to pull the foundation cap down to compress the underlying soil while the compression anchors limit the maximum settlement of the concrete foundation cap. The foundation also includes perimeter-forming and interior corrugated metal pipes with upper and lower sleeved horizontally extending radial bolts that are secured to the pipes and post-tensioned to provide lateral foundation compression.

A post-tensioned concrete cap foundation has helical anchors with pipes having several helical discs welded around the pipe perimeter to spin drill deep into subsurface soils or other soft materials with holes in the pipe for high pressure-grouting in place. The helical anchor pipes include a tensioning element for pulling and post-tensioning the helical anchor. The helical anchors are tension anchors which can be converted to compression anchors. The helical anchors in tension serve to pull the foundation cap down to compress the underlying soil while the compression anchors limit the maximum settlement of the concrete foundation cap. The foundation also includes perimeter-forming and interior corrugated metal pipes with upper and lower sleeved horizontally extending radial bolts that are secured to the pipes and post-tensioned to provide lateral foundation compression.

A system for installing prefabricated wall panels in a building includes a lower sill plate adapted to be fastened to a foundation, an upper sill plate fastened to a bottom of the prefabricated wall panel and adapted to be inserted within the lower sill plate, and a plurality of openings in the upper sill plate. The openings are adapted to allow grout to be inserted between the upper sill plate and the lower sill plate after the upper sill plate is inserted within the lower sill plate.

A system for installing prefabricated wall panels in a building includes a lower sill plate adapted to be fastened to a foundation, an upper sill plate fastened to a bottom of the prefabricated wall panel and adapted to be inserted within the lower sill plate, and a plurality of openings in the upper sill plate. The openings are adapted to allow grout to be inserted between the upper sill plate and the lower sill plate after the upper sill plate is inserted within the lower sill plate.

Seawalls and methods for making seawalls are disclosed. A seawall may include a concrete footing, with a first plurality of anchorages disposed in the concrete footing. A plurality of precast concrete tee beams may include single-tee beams and/or double-tee beams. Flanges of the tee beams may be positioned to form seaward and landward faces of the wall, and stems of the tee beams may be coupled to the footing between the seaward and landward faces. A second plurality of anchorages may be disposed at tops of the stems. Elongate steel components extend through the stems, and are tensioned between the first plurality of anchorages and the second plurality of anchorages. Interior fill may be disposed between the seaward and landward faces. One or more wave deflectors may be disposed above the tee beams.

Seawalls and methods for making seawalls are disclosed. A seawall may include a concrete footing, with a first plurality of anchorages disposed in the concrete footing. A plurality of precast concrete tee beams may include single-tee beams and/or double-tee beams. Flanges of the tee beams may be positioned to form seaward and landward faces of the wall, and stems of the tee beams may be coupled to the footing between the seaward and landward faces. A second plurality of anchorages may be disposed at tops of the stems. Elongate steel components extend through the stems, and are tensioned between the first plurality of anchorages and the second plurality of anchorages. Interior fill may be disposed between the seaward and landward faces. One or more wave deflectors may be disposed above the tee beams.

This disclosure relates to a building assembly including a first upright, a first pivot mechanism, a second pivot mechanism, a first structure, and a second structure. The first upright is pivotally movable with the first pivot mechanism relative to the first structure. The first upright is also pivotally movable with the second pivot mechanism relative to the second structure.

This disclosure relates to a building assembly including a first upright, a first pivot mechanism, a second pivot mechanism, a first structure, and a second structure. The first upright is pivotally movable with the first pivot mechanism relative to the first structure. The first upright is also pivotally movable with the second pivot mechanism relative to the second structure.

An air dome foundation comprises multiple foundation modules (110). The multiple foundation modules (110) are used to be placed on the ground end to end. The foundation modules (110) comprise straight structure and L-shaped structure. The foundation is low in construction cost, short in construction period and suitable for always moving or the situation in which original ground surface can not be modified or damaged.