Once upon a time, a birdbath was a birdbath: a white cast-iron or concrete pedestal with a basic basin on top. But these days, birders and backyarders can choose from an array of watery oases.
The two new research products are: Interface Shear Transfer of Lightweight Aggregate Concretes with Different Lightweight Aggregates and Evaluation of Seismic Performance Factors and Pedestal Shear ...
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