Timber Framers Guild Forums Tools Timberframe Design USING CYPRESS AS A TIMBER FRAME

IS THERE A RULE OF THUMB, FOR THE SIZE OF TIMBERS USED IN TIMBER FRAME TRUSSES OR EVEN RAFTERS. I KNOW THERE ARE SEVERAL VARIBLES INVOLVE. IS THEIR A STRUCTUAL DESIGN ENGINEER AVIABLE THAT I CAN BE REFERED TOO. SAMPLE QUESTION:WHAT IS A SUITABLE MOISTURE LEVEL IN CYPRESS TIMBER FOR TIMBER TRUSSES? IS CYPRESS A SUITABLE MATERIAL FOR TIMBER TRUSSES? THESE ARE JUST A FEW. THANKS FOR ANY RESPONSE.