| Summary: | Joist hangers are one of the most common types of mechanical connectors
used in today’s wood construction industry. Yet, testing agencies and design codes
do not have a proper testing procedure and design guidelines to predict the
capacity of these connectors. The exisiting design guidelines are not compatible
with the current Limit States Design Code in Canada.
Various issues related to the existing joist hanger test procedures were
studied to identify the important criteria for possible adaptation to current
Canadian design standards, while maintaining the link between testing rules and
common construction practice. A list of recommendations and notes were made to
act as guidelines for future modification or subsequent revision of these standards.
As the main focus of this study, an analytical model which predicts the
serviceability and ultimate resistances of light gauge joist hangers was developed,
based on a wide-ranging series of experimental results. This was achieved by
adapting analytical procedures to reflect observed failure modes in tested joist
hanger assemblies, and ultimately through calibration against experimental test
results. This model is suitable for load capacity calculations or for reliability
studies of light gauge structural timber connectors.
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