PTwaarde

PT‑waarde is a term used primarily in Dutch technical and scientific literature to denote a specific quantitative parameter that characterizes the performance or condition of a material, system, or process. The abbreviation “PT” can refer to different concepts depending on the discipline; in geotechnical engineering it commonly stands for “Penetratie‑Test”, while in electrical engineering it may denote “Power‑Transfer”. Consequently, the PT‑waarde is the numerical result obtained from the corresponding test or measurement procedure.

In geotechnical practice the PT‑waarde is derived from the Standard Penetration Test (SPT), where a split‑spoon sampler is driven into the ground by repeated hammer blows. The number of blows required to advance the sampler a prescribed distance (usually 30 cm) is recorded as the N‑value, which is then referred to as the PT‑waarde. This value serves as an indicator of soil density and strength, and it is employed in the design of foundations, retaining structures, and settlement analyses. Typical PT‑waardes range from low values (e.g., 5–10) in loose, cohesionless soils to high values (e.g., 30–50) in dense sands and gravels.

In electrical contexts the PT‑waarde represents the amount of power transferred between two circuits or components, often expressed in watts or decibel‑scaled ratios. Engineers use this value to assess the efficiency of couplers, amplifiers, and transmission lines, ensuring that losses remain within acceptable limits.

Across disciplines, the PT‑waarde functions as a standardized metric that facilitates comparison, quality control, and compliance with regulatory specifications. Accurate determination of the PT‑waarde requires calibrated equipment, consistent testing protocols, and appropriate data interpretation to reflect the underlying physical phenomena reliably.