What is a raker beam?

Raker beams are angled, notched beams that support stadium riser units. They are used universally in outdoor stadiums and arenas and in many indoor arenas and performing-arts theaters.

What is the raker beam and what are the forces developed on the raker beam?

Inclined beams (often called raker beams) are often found in structures like pedestrian bridges, ramps, staircases, stadiums, etc. Due to their geometry, these beams are often subjected to bending moment, shear force, and axial force.

What are the four precast concrete beams?

There are four main types of connections for precast units, include beam end connections, bolted connections, dowel/anchor bolt connections and welded connections.

What is slanting beam?

The slant of a beam controls how steeply the beam deviates from horizontal, according to the pitches of the notes within the beamed group. When the last note of the phrase is higher than the first, the beam slants upwards. When the last note of the phrase is lower than the first, the beam slants downwards.

Why concrete stair is more suitable in buildings?

Concrete stairs can withstand heavy loads and high impact and do not rust in wet conditions. In addition, concrete is fire-resistant, which is why it is often used for fire exit stairwells. Because concrete can absorb vibrations, it is effective in soundproofing, making it ideal for hospital or school staircases.

Is precast house safe?

Safe Construction Platform: No raw materials have to be stocked in site for Precast Concrete construction. It reduces the requirement of traditional formworks and props, wastage, workers, etc. and thus provides a safe working platform.

What are the methods of precast fabrication?

Precast construction method has been adopted as the moulds of standardized components facilitates mass production with stringent quality control. Precast construction method involves setting up of casting yard, production & stacking, transportation and erection of precast elements.

What is the disadvantage of precast concrete?

Following are the disadvantages of precast concrete: If not properly handled, the precast units may be damaged during transport. It becomes difficult to produce satisfactory connections between the precast members. It is necessary to arrange for special equipment for lifting and moving of the precast units.

Is precast cheaper than cast-in-place?

Because precast concrete can be fabricated using assembly line techniques, each cast requires a lot less labor and therefore costs less in labor costs.