Projection Factor Comcheck

Juli 22, 2021 Posting Komentar

Meet U-factor and SHGC. Building Energy Codes Program September 18 2013.

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Many of the simplifications and enhancements developed for COMcheck have provided the technical basis for code changes submitted to the International Code Council ICC.

Projection factor comcheck. PF Projection factor decimal. Answer The projection factor is A divided by B. Example Projection Factor Calculation.

Department of Energy - Building Standards and Guidelines Program Version 21 April 2000. Use the Component Buttons above to create a description of your building. Where the COMcheck report states alteration as the project type.

The ratio of the horizontal depth of the external shading projection divided by the sum of the height of the fenestration and the distance fro the top of the fenestration to the bottom of the farthest point of the eternal shading projection in consistent units. Project Screen 17 Building Energy Codes Program. This video covers the basics of using COMcheck software and is geared toward the beginning userView prese.

COMcheck may be used for alterations and repairs only as follows. For compliance the SHGC cannot be modified to account for the effects of interior-shading devices. Once you have Comcheck Web open on your Microsoft edge browser the Projection Factor Comcheck Web Error is cured.

Where a whole-building analysis including the existing-to-remain and altered parts of the building is performed. Technical Support Documentation for COMcheck-EZ Through Version 24 Release 1 Software iii Summary COMcheck-EZ provides an optional way to demonstrate compliance with commercial and high-rise residential building energy codes. U-factor decreased from 050 to 045 SHGC CZ7 changed from NR to 045 Skylights one set of requirements for both plastic and glass skylights based on old glass skylight requirements How it is handled in COMcheck COMcheck has been updated to read the the appropriate baseline U-factor for windows and skylights from the U-factor.

A Distance measured horizontally from the farthest continuous extremity of any overhang eave or permanently attached shading device to. The ratio of the horizontal depth of the overhang eave or permanently attached shading device divided by the distance measured vertically from the bottom of the fenestration glazing to the underside of the overhang eave or permanently attached shading device. Entering Assemblies by Orientation.

28 2010 requirements for storefronts and curtainwalls - glass framing under 40 glazingtotal wall area 45 U. How do you calculate the projection factor of a gable-end roof overhang. Projection 25 Projection.

A Distance measured horizontally from the farthest continuous extremity of any overhang eave or permanently attached shading device to. The Building Energy Codes Program BECP offers a comprehensive collection of information resources and technical assistance designed to answer questions and address issues related to energy codes. Use the Component Buttons above to addspecify those assemblies that will be altered by this project.

02 PF 05. Only include those assemblies that will remain after the alteration is completed. The window projection factor shall be determined in accordance with Equation 4-5.

_____ Walls below grade each assembly Description of assembly. The projection factor is the ratio of the distance the overhang projects from the window surface to its height above the sill of the window it shades. Code and Location Appropriate Code.

A 6-foot tall window will be shaded by a two-foot deep hori-zontal shade mounted so that its bottom surface is one-foot above the top of the window. The window projection factor shall be determined in accordance with Equation 4-5. Projection factor PF.

Options Menu Comments Orientation code dependent Projection Factor Visible Transmittance ExemptionsAllowances 16 Building Energy Codes Program Projection Factor. Comcheck Web Projection Factor Error Comcheck Web Projection Factor Error The post Comcheck Web Projection Factor Error first appeared on 79 REScheck. ComCheck or Other Approved Software.

Energy Conservation Construction Code of NYS - 2010 effective Dec. Department of Energy DOE and Pacific Northwest National Laboratory PNNL intend to refine and enhance the COMcheck materials over time in response to needs expressed by users. COMcheck-EZ Climate Map US.

Maximum U-Factor 08 08 08 08 Roof Continuous Insulation or Roof Cavity Insulation Continuous Insulation or. PROJECTION FACTOR ORIENTED WITHIN 45 DEGREES OF TRUE NORTH ALL OTHER ORIENTATION. This includes frequently asked questions publications compliance software and tools and training modules based on best.

In Climate Zones 1-6 skylights above daylight zones with automated daylight controls are permitted a. If A is 3 ft and B is 6 ft the projection factor is 36 or 05. PF Projection factor decimal.

The window faces south has an NFRC SHGC of 054 and the glass is recessed 025 feet. Projection Factor for overhang is calcuated by measuring the depth of the overhang divided by distance from the bottom of the window to the lowest point of an overhang. You can see in the second picture of the Department of Energys Comcheck Software that the Projection Factor is at the far right side of the page in the proper place on the laptop screen.

PF Projection factor decimal. The projection factor enables you to characterize the shading impact of horizontal overhangs or canopies that project outward from the plane of the window. Crappy sketch for reference So the projection factor AB Aoverhang length BSill to overhang height but where should I measure B to on the gable end of a roof overhang like in the bottom sketch.

TABLE C402331 SHGC ADJUSTMENT MULTIPLIERS. The window projection factor shall be determined in accordance with Equation 4-5. PLEASE PROVIDE A MECHANICAL EQUIPMENT COMCHECK MECHANICAL DESIGN PROVIDE ON THE MECHANICL SHEETS IF APPLICABLE MECHANICAL SUMMARY MECHANICAL SYSTEMS SERVICE SYSTEMS AND EQUIPMENT.

A Distance measured horizontally from the furthest continuous extremity of any overhang eave or permanently attached shading device to. SHGC North Oriented Glazing SHGC Projection Factor Factor Projection SHGC Multiplier All Other Orientations SHGC Multiplier North-Oriented 0-010 100 100 010-020 091 095 020-030 082 091. Projection Factor Question What is the projection factor of an overhang that extends 3 ft out and is 6 ft above the bottom window sill.

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