10014 13TH AVE SE 2017-01-13 - Laserfiche WebLink

Exterior poors: The exterior door section is for swinging doors only.Enter sliding doors in the vertical glazing section of the worksheet. If a swinging door includes glazing,it may be entered in the vertical glazing schedule or in the exterior door schedule. Obtain NFRC tested U-factors from the door manufacturer or use U-factors from WSEC Tables. Table 10-6A Default U-Factors for Vertical Glazing(use for doors with greater than 50�glazing.J Table 10-6C Default U-factors for poors(limited to doors with less than 50%glazing.f Area of windows,doors and skylights are measured using the rough opening area. Glazing area in exterior doors is added to the total glazing area of the project as follows: If greater than 50%,100%of the area is entered in the door glazing area. If less than or equal to 50%,only the glazed area will be entered in the door glazing area. Exempt Door:One door,24 feet or less is not included in the U-factor of glazing area calculations.You must calculate the door area to assure it is 24 square feet or less.This also enters the door heat loss into the heating system size calculation. Vertical and Horizontal Glazing: Obtain NFRC tested U-factors from the glazing supplier.These will give the most accurate and likely the most favorable results. If you can't obtain this data,the tables in Chapter 10 of the WSEC must be used. For default U factors for vertical glazing,refer to table 10-6A If window manufacturer can legitimately be claimed as a"small business"(as defined in Chapter 2 of the WSEC),you may use table 10-68 for default U factors. Note:the term"small business"refers to the glazing manufacturer,not the builder or building owner. For default U factors for overhead glazing,refer to table 10-6E If doors are being entered into the vertical glazing tab/e,refer to table 10-6C and 10-6D. Garden Window Exception Schedule The WSEC allows double glazed,unrated garden windows with a wood or vinyl frame to be exempt from the U-factor calculation under the following rules. The total area of this exemption is limited to 1 percent of the conditioned floor area up to a maximum The areo of the glazing must be mu/tiplied by 3 and added to the total glazing area for the project. Completing the Heating System Size Worksheet This worksheet is used to calculate the design heat load of the structure.It also calculates the maximum heating system size required by code.This worksheet does not perform required cooling load calculations.Use Manual J or equivalent for cooling system size calculations. Go to the Outdoor Design Temperature Worksheet Tab.Locate the outdoor design temperature for a location near the project site.You need to enter the desi�n temperature on this worksheet. Calculate and enter the volume of the interior space in the building(floor area x ceiling height). Measure the dimensions of each exterior building assembly,wall,attic floor etc.Enter the area next to the R-value description that matches the construction.If a construction method is selected that is not represented here,select values from Chapter 10 of the WSEC and enter it in one of the blank spaces at the end of each components section. Enter the correction factor for duct location.If the ducts are indoors,enter 1.If the ducts are in the crawl space,attic or garage,enter 1.15. ` ` �q� p �� ` �