Detailed Calculations. The Design Builder on behalf of the Design Builder is responsible for detailed calculations of all structural, mechanical, and electrical work. He is responsible for ascertaining and verifying (i) the adequacy and correctness of equipment specified or shown on the drawings and (ii) verifying that the plans and specifications do not violate sound and accepted engineering principles. He shall confirm that there has been ample provision in the entire structural system for expansion and contraction, including but not limited to building frames, the roof system, gravel stops, gutters, roof expansion joints, metal flashing and metal counter flashing, roof decks, and masonry walls; and he shall confirm that there has been ample provision in the mechanical work for expansion and contraction.
Detailed Calculations. The aim of more detailed field strength calculations is to minimise the probability of harmful interference using detailed data. More detailed calculations (e.g. radial or area calculation) may be performed between operators within “Operator Arrangement” (see section 4 and 6.b) or, in the case of reported harmful interference, instead of the calculations given in section 5 if there is an agreement on it between operators. There are three interference field strength prediction methods described in the relevant ECC/REC/(08)02 (Edition 27 April 2012): • site general model with line calculations (hereinafter called “site general method”), • path specific model with radial calculations from base stations (more sophisticated, hereinafter called “radial calculations”), • area calculations with a path specific model (the most sophisticated, hereinafter called “area calculations”). Using a site general method (like “HCM” Agreement”) for the assessment of interference can only ensure a certain protection against harmful interference. In the case of harmful interference operators are expected to apply area calculations based on commonly agreed wave propagation models, trigger values and methods used for evaluation of interference to protect their networks or a special part of the border area and to enhance spectrum efficiency in border areas.
