Exploring Vibration Standards: A Deep Dive into ISEE/USBM Guidelines for Structural Safety

Insights from USBM RI-8507 Vibration Study

The United States Bureau of Mines performed extensive vibration analysis and compiled the findings in the Report of Investigation 8507 (RI-8507): Structure Response and Damage Produced by Ground Vibration From Surface Mine Blasting in 1989. This report studied 76 structures that experienced 219 production blasts and also reviewed data from previous studies. The resulting report established widely accepted thresholds that highlight the significance of frequency and amplitude in relation to potential vibration damage.

USBM RI 8507: Vibration Thresholds for Wood-Framed Residential Buildings and Similar Structures

The vibration thresholds in USBM RI 8507 are mainly designed for wood-framed residential buildings with one or two stories. It includes recommendations for similar structures with plaster or gypsum board finishes. The thresholds depend on the frequency of the vibrations, which were determined through extensive observations and measurements. Figure 1 shows these thresholds.

Figure 1. USBM RI-8507 and OSMRE vibration thresholds recommendations

 

These guidelines aim to minimize harm to the surface finishes of one and two-story wooden residential buildings which are typically the most sensitive parts. The study focused solely on these types of structures, excluding historic or fragile ones, as well as those that are bigger or sturdier. Furthermore, the recommendations do not encompass vibrations that last longer than a few seconds.

The vibration thresholds provided are based on recorded vibrations in the undisturbed ground near the building's foundation. For more information on where to place monitoring devices, refer to the ISEE Field Practice Guidelines for Blasting Seismographs.

Understanding Vibration Standards for Residential Structures: Strengths and Limits

This study excels in providing carefully researched limits for vibrations caused by blasts and short bursts such as many demolition techniques, specifically for typical homes in the US. It gives clear advice on how to use these limits and is a valuable resource for those wanting to learn more about measuring vibrations and their effects on buildings. But it's important to note its limitations too. The limits are only meant for certain types of houses and vibration sources. Using them for projects with longer or more frequent vibrations or different kinds of buildings could increase the project's risks.