Parsons International Interview Questions and Answers for Experienced

Manholes are typically covered with a combination of tanking membrane and protection board.

• Tanking membrane is a waterproofing material that is applied to the surface of the manhole to prevent water from entering.

• Protection board is then placed on top of the tanking membrane to protect it from damage.

• The type of protection board used can vary depending on the specific application, but it is typically made of materials ...read more

Different types of kerb stones used for road work include granite, concrete, and natural stone.

• Granite kerb stones are durable and resistant to weathering

• Concrete kerb stones are cost-effective and easy to install

• Natural stone kerb stones provide an aesthetically pleasing look to the road

• Other types of kerb stones include limestone, sandstone, and basalt

Asphalt can be acceptable within a specific temperature range.

• Asphalt can be acceptable between certain temperature limits.

• The acceptable temperature range for asphalt depends on its intended use.

• For road paving, asphalt is typically acceptable between 275°F and 350°F.

• Outside of this temperature range, the quality and performance of asphalt may be compromised.

The two types of utility are form utility and time utility.

• Form utility refers to the value added to a product through its physical characteristics or design, such as a car's sleek appearance or a smartphone's user-friendly interface.

• Time utility refers to the value added to a product by making it available when it is needed, such as a grocery store being open late for customers who work late shifts.

• Both types of utili...read more

Two types of manholes are sewer manholes and utility manholes.

• Sewer manholes are used for accessing and maintaining sewer lines.

• Utility manholes are used for accessing and maintaining electrical, gas, or telecommunications lines.

• Sewer manholes are typically larger and deeper than utility manholes.

• Utility manholes may have visible above-ground structures such as transformers or junction boxes.

• Both types of manholes requ...read more

Precast and cast in situ are two methods of concrete construction.

• Precast involves casting concrete in a factory and transporting it to the construction site for installation.

• Cast in situ involves pouring concrete directly at the construction site.

• Precast is often used for standardized elements such as walls, beams, and columns.

• Cast in situ is often used for complex shapes and structures.

• Both methods have their advanta...read more

Surface water drainage collection through gulleys is an important aspect of maintaining a safe and functional environment.

• Gulleys are channels or trenches that collect and direct surface water runoff.

• Properly designed and maintained gulleys prevent flooding and erosion.

• Gulleys should be regularly cleaned to prevent blockages and ensure proper drainage.

• The collected water should be directed to a suitable drainage system...read more

An Inspection Test Plan (ITP) is essential for ensuring quality and compliance in infrastructure projects.

• ITP outlines the quality control measures for construction activities.

• It specifies the inspections, tests, and documentation required at various stages.

• For example, an ITP for concrete work may include slump tests and cube tests.

• ITPs help in identifying potential issues early in the project lifecycle.

• They ensure co...read more