Department of Buildings requirements. The information included in these Guidelines can be used for the. evaluation of existing porches and decks as well as the design of new. structures. Tables are provided to assist in determining the load. capacity of joists, beams, columns and bolted connections for simple. structural configurations.
The causes of cat hyperthyroidism may include: 1  A high amount of benign cells in the thyroid gland, which is the most common cause of hyperthyroidism in cats. 2  These cells may cluster in small nodules on the thyroid gland; these nodules are known as adenomas.
Causes of Hyperthyroidism. Graves' disease is the most common cause of hyperthyroidism. It occurs when the immune system produces antibodies that attack the thyroid gland, making it produce too much thyroid hormone. This condition happens often in people with a family history of thyroid disease.