Columns are the vertical members that carry a building’s weight from the slabs and beams down to the foundation. In a framed structure, every floor load passes through a column, so the types of RCC columns chosen for a project directly affect structural safety and construction cost. Engineers sort columns by cross-section, loading condition, length, […]
The West Point Bridge Designer is a free educational program that lets middle school and high school students design a steel highway bridge on a computer screen. The software, created by Engineering Encounters and used in the nationwide West Point Bridge Design Contest, models real structural behavior: every member carries tension or compression, every joint
Weep holes are small drainage openings placed near the base of retaining walls, compound walls, wing walls, and other underground structures so trapped water can escape. A typical weep hole is a round or square opening about 0.1 m, or 100 mm, in diameter that lets water drain from the backfill side to the exposed
Corrosion is the slow conversion of a metal back into the ore it came from. Iron and steel, the backbone of most structures, react with oxygen and moisture in the environment and form oxides and hydroxides that have none of the parent metal’s strength. The process does not stop at the surface: rust expands, cracks
Every foundation transfers the weight of a structure into the ground, and the soil must be able to carry that weight without failing in shear or settling too far. When the ground beneath a footing cannot resist the applied pressure, the foundation can sink, tilt, or rupture, and the damage often appears first as cracked
A column is the vertical structural member that carries the dead and live loads of a building from beams and slabs down to the foundation. In a framed structure the column works as a compression member, shortening slightly under load instead of bending, and its effective depth is at least three times its side dimension,
Every slab, beam, girder, and column in a building carries a share of the total load. Before any member can be sized, the engineer must know how much load it receives, and that depends on which parts of the floor or roof feed into it. The tributary area is the loaded region that contributes load
Micropiles, also called mini-piles, pin-piles, or root-piles, are small-diameter, high-strength foundation elements used where conventional piles cannot fit or where access is restricted. A typical micropile is a steel casing, bar, or rib, 6 to 12 inches (150 to 300 millimeters) in diameter, drilled into the ground and filled with high-strength cement grout. The bearing
An LVL spans calculator finds the maximum allowable span for Laminated Veneer Lumber beams and joists, the farthest distance a member can safely cover while carrying its design load. LVL is an engineered wood product built from thin veneers laminated with waterproof adhesive, and its predictable strength lets designers span further with less depth than
An LVL beam span calculator sizes laminated veneer lumber for the distance it must cover. LVL, or laminated veneer lumber, is an engineered wood product made from thin veneers bonded with waterproof adhesive under heat and pressure. The process removes knots and grain defects from the strength calculation, so designers get predictable values for bending,
