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Opaque Envelope Wall Basis of Design (BOD)
High-Density Fiber Cement with Rigid Insulation and Metal Stud Back-up
IBC 2021 & IECC 2021
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Overview
Performance
| Rigid Continuous Insulation – IECC 2021 (Climate Zone 5, All Other Use) | ||||||
| Code (IECC 2021 + MA Base*) | Proposed Base | Proposed Optimized | ||||
| R-Value | U-Factor | R-Value | U-Factor | R-Value | U-Factor | |
| Roofs | ||||||
| Insulation Entirely Above Roof Deck | R-30ci | U-0.032 | R-30ci | U-0.032 | R-40ci | U-0.025 |
| Walls Above Grade | ||||||
| Metal Framed | R-13+ R-10ci | U-0.055 | R-16ci | U-0.054 | R-13+ R-16ci | U-0.042 |
| Slab-On-Grade Floors | ||||||
| Unheated Slabs | R-15ci | F-0.52 | R-15ci | F-0.52 | R-15ci | F-0.52 |
| Vertical Fenestration | ||||||
| Fixed | NA | U-0.36 | U-0.30* | NA | U-0.29 | NA | U-0.24 |
| Operable | NA | U-0.45 | U-0.32* | NA | U-0.30 | NA | U-0.30 |
| * MA specific requirement. | ||||||
Downloads
| Summary: | |
 | Embodied Carbon Analysis Clear Field Wall Thermal Modeling* Linear Thermal Bridge Modeling* ICC Code Evaluation Report(s)* NFPA 285 Extension Report(s)* * Items available upon request Lineral Thermal Bridge Modeling by RDH Building Science |
| Details: | |
 | SK-01 | Typical Wall Plan & Section SK-02 | Typical Wall to Foundation SK-03 | Typical Inside & Outside Corner SK-04 | Typical Floor to Floor SK-05 | Typical Wall to Roof SK-06 | Typical Wall to Window SK-07 | Typical Wall to Curtainwall |
| Short Form Specifications: | |
 | Section 070543 | Rainscreen Cladding Attachment System (Rigid ci) Section 071300 | Sheet Waterproofing Section 072100 | Thermal Insulation (Rigid ci) Section 072216 | Roof Insulation Section 074246 | Cementitious Wall Panels Section 084413 | Glazed Aluminum Curtain Walls Section 085113 | Aluminum Windows Short Form Specifications Courtesy of Kalin Associates |
| Product Data: | |
 | Section 070543 | Knight Wall Systems - HCI System Section 071300 | Henry - MiraDri 860/861 & Blueskin WP200 Section 072100 | DuPont - Styrofoam & TClear - WallGuard Section 072216 | DuPont - Styrofoam XR Section 072700 | Henry - Metal Clad 705FR & ELBEX - HS222 Section 074246 | Etex Group - EQUITONE Section 084413 | Apogee Architectural Metals - EFCO 5600X Section 085113 | Apogee Architectural Metals - EFCO 325X |