Plans are designed to specifications published by the International Residential Code (IRC) or the International Code Congress (ICC). Our plans are designed to meet or exceed the national building standards. Because of the great differences in geography and climate throughout the US and Canada, each state, country, county and municipality has its own building codes, zone requirements, ordinances and building regulations. Your plans may need to comply with the local requirements regarding snow loads, energy codes, soil and seismic conditions and a wide range of other matter. Therefore we always recommend that you have the plans reviewed by a local structural/truss engineer.