Emirates Precast Construction Interview Questions and Answers

MOC of utility lines with grade refers to the material of construction suitable for different grades of utility lines.

• MOC for utility lines with grade depends on factors like temperature, pressure, and type of fluid being transported.

• Common materials used for utility lines include carbon steel, stainless steel, copper, and PVC.

• Higher grades may require materials with better corrosion resistance and mechanical properties.

• Selection of MOC should comply with industry standards a...read more

Manufacturing methods of pipes include seamless, welded, and extruded processes.

• Seamless pipes are made by piercing a solid billet of metal and then rolling it to form a hollow tube.

• Welded pipes are made by welding together two ends of a metal strip or plate to form a tube.

• Extruded pipes are made by forcing a metal billet through a die to create the desired shape and size.

• Other methods include spiral welding, longitudinal welding, and centrifugal casting.

Types of fittings include elbows, tees, reducers, couplings, and flanges.

• Elbows: used to change the direction of the pipe

• Tees: used to create a branch in the pipeline

• Reducers: used to connect pipes of different sizes

• Couplings: used to connect two pipes together

• Flanges: used to connect pipes, valves, and other equipment

Types of flanges include weld neck, slip-on, socket weld, lap joint, threaded, blind, and spectacle blind.

• Weld neck flange: used for high pressure applications

• Slip-on flange: easy to align and install

• Socket weld flange: for small bore piping

• Lap joint flange: used with stub end fittings

• Threaded flange: for low pressure applications

• Blind flange: used to close off piping systems

• Spectacle blind flange: used in piping systems where flow needs to be monitored or controlled

SFD (Shear Force Diagram) and BMD (Bending Moment Diagram) show the variation of shear force and bending moment along the length of a beam or frame.

• SFD shows the variation of shear force along the length of a beam or frame.

• BMD shows the variation of bending moment along the length of a beam or frame.

• SFD and BMD are essential for analyzing the internal forces and moments in a structure.

• The diagrams help in determining the maximum shear force and bending moment in a beam or fra...read more

Loads acting upon piperack include dead loads, live loads, wind loads, and seismic loads.

• Dead loads are the permanent loads from the weight of the structure itself and any permanent equipment or fixtures.

• Live loads are temporary loads from the weight of people, equipment, or materials on the piperack.

• Wind loads are forces exerted by wind on the structure, which can vary based on the location and design of the piperack.

• Seismic loads are forces caused by earthquakes or ground v...read more