Which of the following is NOT a characteristic of grillage foundations?

Grillage foundations are a type of foundation system used primarily for supporting heavy loads, such as those from structures like bridges or heavy machinery. Understanding the characteristics of grillage foundations reveals why certain traits are prominent.

Cost-effectiveness is a strong characteristic of grillage foundations because they utilize a relatively simple design that can effectively distribute loads over a large area. This typically leads to lower costs in materials and construction when compared to more complex foundation systems.

If we look at ease of construction, grillage foundations are relatively straightforward to build. The construction process usually involves laying down a series of beams or reinforcing elements, making it manageable for crews with standard skills in foundation work.

High load distribution is another key feature. Grillage foundations are designed to distribute vertical loads across a wide area, reducing the pressure at any given point on the soil beneath it. This capability helps to prevent soil failure or excessive settlement.

On the other hand, the statement regarding low weight is not typically accurate for grillage foundations. These foundations are often made from robust materials (like steel or reinforced concrete) in order to support high loads, leading to a significant weight when compared to other foundation types. Therefore, while they excel in cost-effectiveness, ease of construction, and load distribution, they are