URS Scott Wilson India Interview Questions, Process, and Tips

A tack coat is a thin layer of bituminous emulsion applied to an existing surface before the placement of a new layer of asphalt.

• Tack coat helps bond the new asphalt layer to the existing surface

• It prevents slippage between the two layers

• Tack coat improves the overall durability and longevity of the pavement

• Common types of tack coat materials include SS-1, CSS-1, and CRS-1

• Proper application and curing of tack coat are

The gradient of a road is the slope or incline of the road, while a chamber is a manhole or access point for underground utilities.

• Gradient of a road refers to the slope or incline of the road, usually expressed as a percentage or ratio (e.g. 5% gradient)

• Chamber is a manhole or access point for underground utilities such as sewer lines or electrical cables

• Gradient is a physical characteristic of the road, while a chamb...read more

Segregation is the act of separating or setting apart different elements or groups based on certain criteria.

• Segregation can occur based on factors such as race, gender, religion, or socioeconomic status.

• Examples include racial segregation in schools or neighborhoods, gender segregation in certain workplaces or activities, and economic segregation in housing developments.

• Segregation can lead to inequality, discriminati...read more

Workability of concrete refers to its ease of mixing, placing, and compacting without segregation or bleeding.

• Workability is influenced by water content, aggregate size and shape, and cement content.

• A concrete mix with high workability is easier to place and compact, while a mix with low workability may require more effort.

• Workability tests include slump test, flow table test, and Kelly ball test.

• Proper workability ens...read more

Types of curing include air curing, water curing, and steam curing.

• Air curing involves allowing the concrete to cure naturally in the open air.

• Water curing involves keeping the concrete moist by spraying or ponding water on the surface.

• Steam curing involves applying heat and moisture to accelerate the curing process.

• Other types of curing include membrane curing and curing compounds.