POST TENSIONED SLAB

The use of post-tensioned reinforcement to construct floor slabs can result in thinner concrete sections and/or longer spans between supports. Designers commonly take advantage of this method to produce buildings and structures with clear open spaces allowing more architectural freedom.

These Safety Gloves Can Withstand Nails Hammers And Knives

These gloves could save your fingers a lot of pain.

They are the mark VIII safety gloves, and they are incredibly robust.

They have a special lining all the way through the fingers.

They are made from nitrile and cotton.

The gloves were designed by a chilean inventor.

He is now looking to manufacture the gloves on a large scale.

Tension and compression

Steel beams used to support giant structures are constantly under an enormous amount of stress. Beams undergo stresses of both compression and tension (stretching)

Shaft Torsional Failure

To understand shafts and why they fail, you need to understand the relationship between stress and strain for steel. Stress is the force carried by a material per unit area, measured in psi (pounds per square inch) or Mpa (Megapascals or Mega Newtons per square meter). 

Diagonal tension cracks in concrete beam and in concrete shearwalls

Shear failure of reinforced concrete beam more properly called diagonal tension failure,is difficult to predict accurately.

Shear Pleasure

Depending on the house’s construction, there may or may not be a cripple wall. This feature is a short wall about 36″ high between the foundation and the first-floor framing that is commonly found on late-19th-century houses on the West Coast, especially row houses. The cripple wall is the weakest part of the house, usually relying on nothing more than diagonal bracing to keep it from collapsing into a parallelogram.

Diagonal reinforcement at the special shear wall.

The lateral load-resisting system consists of a building frame with special reinforced concrete shear walls. To provide optimum flexibility, shear walls are primarily located at elevator and stair cores and the short ends of the building. Due to the concentrated high lateral forces, shear walls are 12 inches to 26 inches thick and heavily reinforc...ed.

Wall and Column Kickers

Kickers aren't being used so much in construction today, a lot of new construction engineers are learning methods that can be more risky whereas taking a little extra time and setting a template (kicker) against each column/wall can pay back in dividends when saving re-work.

Periodic inspection for base isolation

Seismic isolation, commonly referred to as base isolation, is a design concept based on the premise that a structure can be substantially decoupled from potentially damaging earthquake motions.

Top 10 Myths in Concrete Construction

Get a candid look at ten popular, but mistaken ideas that still exist in concrete construction. Using examples, interviews, and demonstrations, this revealing video exposes and explains the most common misconceptions associated with the cement and concrete industry. The video is designed as an educational training tool for workers of all experience levels