Ranks the country in the Nizhny Novgorod region. The box is assembled, the roof is covered, it is time to install the stairs. Considered myself was as usual lazy, always use the online calculators and advice on the forums. Came across this website, has performed an initial calculation of the forumkhaus created a separate branch and asked the experts said norms. Arrived on the scene, in place a little customized results, and voila. In 1.5 weeks beauty already performs its function. Thank you for your accurate calculations. Recommend!