Saudi Diyar Consultants Mechanical Engineer Interview Questions and Answers

Different types of mechanical systems in building construction include HVAC systems, plumbing systems, and fire protection systems.

• HVAC systems: Heating, ventilation, and air conditioning systems that control the temperature, humidity, and air quality in a building.

• Plumbing systems: Water supply and drainage systems that provide clean water for various purposes and remove wastewater.

• Fire protection systems: Fire sprink...read more

Comments on shop drawing for mechanical engineer

• Check dimensions and tolerances

• Ensure proper material selection

• Verify compliance with industry standards

• Confirm accuracy of assembly instructions

• Identify potential manufacturing issues

A psychometric chart is a graphical representation of the thermodynamic properties of air.

• It shows the relationship between temperature, humidity, and other properties of air.

• It is used in HVAC design to determine the appropriate air conditioning system for a given space.

• It can also be used to calculate the dew point, relative humidity, and enthalpy of air.

• The chart is divided into different zones that represent differ...read more

Change in class in duct pressurization affects ducting installation and fabrication.

• A change in class may require different materials for ducting installation and fabrication.

• Higher class ducts may require thicker materials to withstand higher pressures.

• Lower class ducts may require less expensive materials to meet pressure requirements.

• Changes in class may also affect the size and layout of ducting.

• Proper calculations...read more

A decoupler is used in chilled water piping to prevent vibrations and noise.

• Decouplers are installed in piping systems to isolate equipment from vibrations and prevent noise transmission.

• They are typically made of rubber or other flexible materials.

• Decouplers are commonly used in chilled water piping systems to prevent vibrations from the chiller from being transmitted to the rest of the building.

• Piping details include...read more

Drainage piping for high rise towers is a critical aspect of building design.

• The piping system must be designed to handle large volumes of water and waste.

• Gravity and pressure systems are commonly used in high rise buildings.

• The piping system must be properly sized and installed to prevent clogs and backups.

• Regular maintenance and inspections are necessary to ensure proper functioning.

• Proper ventilation and odor contro...read more

It depends on the local building codes and regulations.

• In some areas, a single tank for both fire and domestic water is acceptable.

• In other areas, separate tanks are required for fire and domestic water.

• The size and capacity of the tank will also depend on the specific needs of the building.

• Consulting with local authorities and a qualified engineer is recommended.

Materials used in mechanical engineering vary depending on the system and application.

• Metals such as steel, aluminum, and titanium are commonly used for structural components.

• Plastics and composites are used for lightweight parts and insulation.

• Rubber and elastomers are used for seals and gaskets.

• Ceramics are used for high-temperature applications and electrical insulation.

• Fluid systems may use materials such as copper...read more