MRc2 — REDUCE EMBODIED CARBON
降低隐含碳

CREDIT 积分项

Possible Points 可获分值：Up to 6 points 分（最多）

适用项目类型：New Construction 新建建筑 / Core and Shell 核心与外壳

影响领域（Impact Area Alignment）：

✓ Decarbonization 脱碳 — Quality of Life 生活质量 — Ecological Conservation and Restoration 生态保护与修复

INTENT 意图

To reward projects that select lower-embodied-carbon materials and optimize building design to reduce the overall embodied carbon footprint of the project, contributing to global decarbonization goals.

奖励那些选择较低隐含碳材料并优化建筑设计以减少项目整体隐含碳足迹的项目，助力全球脱碳目标。

REQUIREMENTS 要求

Choose ONE of the following Options / 选择以下选项之一：

OPTION 1 MATERIAL OPTIMIZATION / 材料优化路径
Points 分值	Requirements 要求	中文说明
1 point 分	Use products with Type III product-specific EPDs for at least 25% (by cost) of the project's structural, enclosure, and hardscape materials	对至少 25%（按成本计算）的项目结构、围护结构和硬景观材料，使用具有 Type III 产品专属 EPD 的产品
2 points 分	Use products with Type III product-specific EPDs for at least 50% (by cost) of the project's structural, enclosure, and hardscape materials	对至少 50%（按成本计算）的项目结构、围护结构和硬景观材料，使用具有 Type III 产品专属 EPD 的产品
3 points 分	Use products with Type III product-specific EPDs for at least 75% (by cost) of the project's structural, enclosure, and hardscape materials	对至少 75%（按成本计算）的项目结构、围护结构和硬景观材料，使用具有 Type III 产品专属 EPD 的产品
4 points 分	AND achieve an average GWP reduction of ≥ 10% compared to industry average (as reported in EPDs) for all EPD-covered materials	并且所有 EPD 覆盖材料相较于行业平均值（如 EPD 中所报告）实现平均 GWP 降低 ≥ 10%
5 points 分	AND achieve an average GWP reduction of ≥ 20% compared to industry average for all EPD-covered materials	并且所有 EPD 覆盖材料相较于行业平均值实现平均 GWP 降低 ≥ 20%
6 points 分	AND achieve an average GWP reduction of ≥ 40% for all EPD-covered materials, with at least 3 additional impact categories improved vs. industry average	并且所有 EPD 覆盖材料实现平均 GWP 降低 ≥ 40%，且至少 3 个额外影响类别相较于行业平均值有所改善

— OR 或者 —

OPTION 2 WHOLE BUILDING LIFE CYCLE ASSESSMENT / 全建筑生命周期评估路径
Points 分值	Requirements 要求	中文说明
1 point 分	Conduct a whole building lifecycle assessment (WBLCA) and demonstrate a 5% reduction in total embodied carbon (GWP) compared to a baseline	进行全建筑生命周期评估（WBLCA），并证明相较于基准线，总隐含碳（GWP）降低 5%
2 points 分	Demonstrate a 10% reduction in total embodied carbon (GWP)	证明总隐含碳（GWP）降低 10%
3 points 分	Demonstrate a 15% reduction in total embodied carbon (GWP)	证明总隐含碳（GWP）降低 15%
4 points 分	Demonstrate a 20% reduction in total embodied carbon (GWP), and include construction site emissions in the assessment	证明总隐含碳（GWP）降低 20%，并在评估中包含施工现场排放
5 points 分	Demonstrate a 30% reduction in total embodied carbon (GWP), and include construction site emissions	证明总隐含碳（GWP）降低 30%，并包含施工现场排放
6 points 分	Demonstrate a 40% reduction in total embodied carbon (GWP), include construction site emissions, and demonstrate improvement in at least 3 additional LCA impact categories	证明总隐含碳（GWP）降低 40%，包含施工现场排放，并证明至少 3 个额外 LCA 影响类别有所改善

Construction Site Emissions 施工现场排放：Projects pursuing 4+ points under Option 2 must also account for and demonstrate reduction of jobsite emissions (fuel use, equipment, temporary power).

在选项 2 下追求 4 分及以上的项目，还必须核算并证明施工现场排放（燃料使用、设备、临时电力）的减少。

KEY DEFINITIONS 关键定义

Term 术语	Definition / 定义
Type III EPD	Product-specific, ISO 14025-compliant Environmental Product Declaration with industry-average comparison 产品专属、符合 ISO 14025 的环境产品声明，含行业平均值对比
GWP (Global Warming Potential)	全球变暖潜势，以 CO₂eq 为单位衡量隐含碳影响 Global Warming Potential, measures embodied carbon impact in CO₂eq
WBLCA (Whole Building Lifecycle Assessment)	全建筑生命周期评估，覆盖 A1-A3（生产）、A4-A5（运输与安装）、B（使用）、C（报废）阶段 Whole building lifecycle assessment covering A1-A3, A4-A5, B, C stages
Baseline / 基准线	A reference building with similar program, size, and structural system, using industry-average EPD data 具有类似功能、规模和结构系统的参考建筑，使用行业平均 EPD 数据

ACCEPTABLE EPD TYPES 可接受的 EPD 类型

EPD Type EPD 类型	Standard / 标准	Acceptable / 是否接受
Product-specific Type III	ISO 14025 / EN 15804 / ISO 21930	✓ Yes 是
Industry-average EPD	ISO 14025	✓ Yes (for Option 1 baseline only) 是（仅用于选项1基准线）
System-level EPD	EN 15804	✓ Yes 是
Internally-generated (non-PCR) declaration	N/A	✗ No 否

IMPLEMENTATION GUIDANCE 实施指南

Early Design Integration 早期设计整合

Conduct a carbon hotspot analysis during schematic design to identify high-impact materials (concrete, steel, aluminum, insulation).
在方案设计阶段进行碳热点分析，识别高影响材料（混凝土、钢材、铝材、保温材料）。
Set embodied carbon targets early and integrate reduction strategies into the specifications.
早期设定隐含碳目标，并将减排策略整合到规范中。

Priority Materials 优先材料

Material 材料	Strategy 策略	Typical Savings 典型节省
Concrete 混凝土	Supplementary cementitious materials (fly ash, slag), carbon-cured concrete 辅助胶凝材料（粉煤灰、矿渣）、碳养护混凝土	10–40% GWP reduction GWP 降低 10–40%
Steel 钢材	Recycled content steel, EAF production, optimize structural profiles 回收含量钢材、电弧炉生产、优化结构型材	20–50% GWP reduction GWP 降低 20–50%
Mass Timber 重型木结构	Replace concrete/steel with certified mass timber (CLT, GLT) 用认证的重型木结构（CLT、GLT）替代混凝土/钢材	20–70% GWP reduction (with biogenic storage) GWP 降低 20–70%（含生物源碳储存）
Insulation 保温材料	Bio-based insulation (cellulose, wood fiber, hemp) 生物基保温材料（纤维素、木纤维、大麻纤维）	30–60% GWP reduction GWP 降低 30–60%

SPECIAL REQUIREMENTS 专项要求

Project Type 项目类型	Special Provisions 特殊规定
Core and Shell 核心与外壳	Assessment scope limited to base building structure and enclosure; tenant fit-out materials are excluded but may be documented as a voluntary commitment. 评估范围限于基础建筑结构和围护结构；租户装修材料不包括在内，但可作为自愿承诺进行记录。
Schools 学校	Modular classrooms and portable structures must be included if part of the project scope. 如属于项目范围，模块化教室和移动式建筑必须纳入。
Healthcare 医疗	Specialized medical equipment and fixtures are excluded from the assessment scope. 专用医疗设备和装置不在评估范围内。
Data Centers 数据中心	Raised floor systems and equipment support structures must be included; IT equipment is excluded. 架空地板系统和设备支撑结构必须纳入；IT 设备不包括在内。
Residential 住宅	Balconies and common area structures must be included; unit interiors are excluded for multifamily projects. 阳台和公共区域结构必须纳入；多户住宅项目的单元内部不包括在内。