![]() ![]() They represent very poorly performing doors, which can be an issue for some buildings if the door area is a significant fraction of the wall area.Įxterior walls in RES check are defined by the assembly type, gross wall area, cavity/continuous R‑value (U-factor for Other walls) and orientation. These defaults are available in COM check and can be used. ![]() ![]() The bottom line from a strict 90.1 and IECC perspective is that if the U-factor is not developed using NFRC 100, the default values in Standard 90.1 must be used. However, Standard 90.1 requires whole product ratings in accordance with NFRC 100. In the same way that some window manufacturers only refer to the center of glass performance (and to ignore the thermal bridging through the window frame), door manufacturers have preferred to talk about the door slab only (and to ignore the thermal bridging in the frame). assigned the default values in Section A7.1.īoth the NFRC 100 and the Section A7.1 values are for the overall door area, including the door slab and the door frame.either determined in accordance with NFRC 100 or.All NFRC ratings are based on the whole product, including the frame.”Ĭonsequently, for compliance with Standard 90.1, door U-factors must be: “Standard 90.1 requires that U-factors (and air leakage) for doors be determined in accordance with the NFRC rating procedures. The definition in the code for a registered design professional is: an individual who is registered or licensed to practice their respective design profession as defined by the statutory requirements of the professional registration laws of the state or jurisdiction in which the project is to be constructed.Īs for COM check, there are no requirements as to who can use it and who can create a compliance report, but as to who signs and submits the report, the requirements stated above should be followed. Where special conditions exist, the code official is authorized to require necessary construction documents to be prepared by a registered design professional. The construction documents shall be prepared by a registered design professional where required by the statutes of the jurisdiction in which the project is to be constructed. In the IECC, Section C103.1 Construction Documents, General, the wording states that construction documentation and other supporting data shall be submitted in one or more sets with each application for a permit. The commercial energy code requires that a registered professional submit compliance documentation (construction documents and compliance verification). ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |