Nanotechnology in Construction

The application of nano-scale materials and coatings to improve the strength, durability, and energy efficiency of construction materials.

Negative Float

A scheduling condition where an activity’s late start date is earlier than its early start date, indicating a project delay that needs corrective action.

Net Zero Energy Building (NZEB)

A structure designed to produce as much energy as it consumes over a year, typically through renewable energy sources and efficiency measures.

Noise Abatement

Techniques and materials used in construction to minimize sound transmission and reduce noise pollution from construction activities.

Non-Destructive Testing (NDT)

Inspection methods, such as ultrasonic or infrared scanning, used to assess structural integrity without damaging materials.

Notice of Award (NOA)

A formal notification issued to a contractor confirming their selection for a project before contract execution.

Nuclear Density Test

A method used to measure soil compaction levels using nuclear gauges, ensuring foundation stability and compliance with specifications.