Analysis Types & Associated Metrics

Learn about the different criteria and metrics we use to gain deeper insights into your results


Pedestrian Wind

RWDI Pedestrian Wind Criteria

The RWDI Pedestrian Wind Criteria is used in assessing the wind comfort conditions around the Project and is part of the Abridged Comfort Criteria

Boston (BPDA) Pedestrian Wind Criteria

The Boston Planning and Development Agency (BPDA) has adopted two standards for assessing the relative wind comfort of pedestrians.

San Francisco Pedestrian Wind Criteria

San Francisco Planning Code requires buildings in the C-3 downtown districts to be shaped so as not to cause ground-level wind currents to exceed defined comfort and hazard criteria.

Melbourne Pedestrian Wind Criteria

The Melbourne pedestrian wind criteria are used in studies for this area. The comfort and safety conditions for these criteria are based on mean wind speeds and 3 second gust speeds, respectively.

Israeli Wind Criteria

The Israeli wind criteria are required to be analyzed in the Israel region to assess pedestrian wind comfort and safety conditions in the vicinity of new and, in some circumstances, existing developments.

Hunt Wind Criteria

The Hunt Wind Criteria is used in assessing the wind comfort conditions around the Project. As Orbital Stack understands, the Hunt Wind Criteria is commonly used in the Taiwan region.

Lawson Pedestrian Wind Criteria

The pedestrian wind comfort criteria used in most studies were developed by T.V. Lawson at Bristol University, UK. These criteria are well-established as the benchmark against which to assess the wind microclimate around buildings.

Thermal Comfort

UTCI Explained

The Universal Thermal Climate Index (UTCI) is a metric that creates an equivalent temperature based on standard conditions. It calculates a comfort value for the actual conditions, and then determines an equivalent temperature that would create the same comfort value for a “standard” condition.

SPMV Thermal Comfort Criteria Explained

Thermal comfort is a complex topic that combines an understanding of human behavior and physiological response to external environmental conditions. There is a myriad of thermal comfort metrics in existence ranging from simple objective metrics to complex metrics which combine thermal systems and survey results.

Directional Wind

Streamlines and Generalized Wind Flows

When interpreting the results of a Directional Wind Study in Orbital Stack, the generalized wind flows will be show in color-coded streamlines.

Solar and Shade

Solar (% Sun Lit) Color Legend Explained

Below is a description of how to interpret the Solar (% Sun Lit) – Color Legend that is visible in the viewer. Understanding these legends will help make the most out of analyzing your results. What is it measuring? A theoretical shading scale that measures if the sky was clear every day of the year,…