Leak Detection

1300

HANGING

Service #

GARDENS

Electronic vector mapping is a cutting edge technology that is redefining the art of leak detection and quality assurance in lowslope roofing systems. Vector mapping pinpoints breaches in the roof membrane by tracing the flow of an electric current across the membrane surface. Already Europe’s most widely used method for detecting roof leaks, vector mapping is rapidly being adopted by Manufacturers and contractors in the United States.

Vector Mapping is ideal for: • Quality assurance testing of new roofs • Roof integrity testing prior to the installation

of overburden

• Pinpointing leaks in existing roof membranes,

including most vegetative roof systems

• Warranty verification

Vector mapping eliminates the dangers and potential damage inherent in traditional flood testing. Unlike the interpretive process of water, flood, infrared, or nuclear testing, vector mapping detects membrane faults directly. It is ideal for quality and warranty assurance needs, for leak testing of green (vegetative) and ballasted roofs, and for leak detection in all lowslope roofing systems in which the membrane is not electrically conductive and the deck can be electrically grounded. Even pinhole leaks invisible to the naked eye can be pinpointed with vector mapping, so repairs can be made on the spot and immediately retested to ensure watertight results.

Milwaukee • New Orleans • Chicago • Seattle • Minneapolis

Leak Detection EFVM

1400

HANGING

GARDENS

Growth Media Testing

Service #

In a market with many new and unproven stormwater mitigation technologies, the importance of testing and monitoring is imperative for quality control and project endurance. This is even more important given the perceived free will of contractors to value engineer specified materials in an attempt to lower the project costs. It is paramount that in this fledgling industry that value engineering is not synonymous with the compromising of the intended design. That said, regulated testing of these systems through the life cycle of a project will provide for more successful outcomes.

These testing methods should involve third party testing and data logging regardless of the system or project that is being measured. Hanging Gardens partners with numerous testing facilities depending on what necessary product testing is required for a project.

Specific to vegetative roof growth media testing, we follow both ASTM and FLL (European Testing Methods). Samples for testing should be completed prior, during and after construction of projects to ensure the continuity of the materials, water used, and additional advanced controls.

TESTING OPTIONS Grain Size Distribution/Avg. Particle Size Density • Grain size distribution from silt/clay fraction through 3/8” sieve Water & Air Management Density •

Application, Saturated and Dry Media Densities

Crushing Value/Separation Value • % change in size, bulk density & compaction rate pH, Lime & Salinity • pH, Carbonate & Electrical Conductivity • Organic Percentage base on % of Dry Weight Nutrients • Primary, Secondary & Trace Nutrient test Cation Exchange Capacity

RECOMMENDATIONS • One complete test shall be provided at submittal.

• Minimum size necessary for testing is one, 5 gallon pail of material. Material is not to be compacted when shipped.

• One complete test shall be provided for each 100 C.Y. of growth media produced for a project.

• Random complete testing of delivered growth media shall be completed through the project construction.

• Yearly tests in the Spring of each year for pH, Lime & Salinity; Nutrient levels and Cation Exchange Capacity shall be completed to expose any need for media amendments to ensure optimum plant health.

Milwaukee • New Orleans • Chicago • Seattle • Minneapolis