$12\mathrm{.}3($a$)$ The following drawing shows the detall section of an outdoor wood deck. Complete the detail by using appropriate graphic symbols for the finished grade and each wood member. Also provide the missing dimensions. Refer to Chapter $35,$ page $866,$ in the text, for guardrall height and Appendix at the end of this manual for graphic symbols.

$($b$)$ For the durability of wood members used in this deck, which aspect of biodeterioration $($fungal deterioration or termite deterioration$)$ should you be more concerned with? Explain.