As explained inthe first post关于哈德逊河谷河的建筑GBA正在遵循，最大程度地减少碳排放是一个主要目标。因此，限制所使用的混凝土量是关键。因此，BPC绿色建筑商–Trillium Architects团队规范一个绝缘复合水泥e form (ICCF) foundation, specifically完美的块from Eco Building Systems.

Project Manager Ben Bogie found The Perfect Block throughSteve Baczek, who is a fan of the product. Manufactured in Arizona (and soon Virginia), it is made with ground recycled EPS foam that is mixed with binding agents and cement; the resulting block is roughly 87% insulation.

The difference betweenICFSand ICCFs is that the latter is integral to the foundation system (vs. a way to contain concrete), meaning it forms part of the structure. Also, whereas ICFs are concrete cores sandwiched between two pieces of rigid foam, The Perfect Block ICCF is more like what Ben describes as “honeycomb cells.” In the case of this project, the foundation is a grid of 6-in. by 6-in. columns 12 in. on center, and 6-in. by 6-in. beams 12 in. on center—together, the vertical and horizontal structure create a latticework of support, or a screen grid. It provides continuous insulation and has an R-value of 28. Ben says the cost comes in just below that of a conventional concrete foundation wall. For this project, there was an increase because of current shipping costs; the material alone was $29K.

安装很简单。4英尺宽的10英寸深乘12英寸，高高的块被涂抹，轻巧（每个大约40磅），并且很容易手工移动；它们可以用无绳索（甚至是手锯）切割，并直接堆叠在彼此的顶部，并用泡沫粘合剂固定，而无需运行键。

Here, the bulk of the foundation is 6-ft. tall—that’s six blocks high. The crew installed #5 rebar on 24-in. centers (the rebar falls on the center of every other core) up to the height of the first three blocks (3 ft.). Then they tied in another piece with a 12-in. lap and stacked the final three blocks. Staggering the rebar in lifts meant they weren’t reaching up over 6-ft.-tall rebar to stack the blocks.

获得第一个课程水平和铅液至关重要。对连续课程的重点是成为铅垂。垫片被使用，因为块被堆叠以使它们保持在路线上。它们与连续的粘合剂膨胀的泡沫粘合在一起，并在两侧和关节上沿壁的整个长度粘合在一起。由三名成员组成的船员在两周内堆叠了整个基金会。除了进入速度外，Ben还指出了另一个好处：由于产品的涂层，切割的碎屑不会在工作现场吹来，这在标准EPS表单中发生。

根据本的说法，一个陷阱是工程师与该产品一起工作的舒适度。在这种情况下，工程师的计划要求＃4钢筋12英寸在垂直和水平的中间。相反，球队在24英寸上排名第5。中心，将时间表几乎减少了一半。该工程师还在块的外部将1/2英寸的水泥板规定，因为ICCF制造商没有任何测试结果可以显示该产品在这种环境中的性能。（值得注意的是，他们没有23年的记录，没有失败）。设计建造团队退后一步，感到预防措施是不必要的。取而代之的是，他们选择在外部使用岩圈舒适板，因为他们相信它具有足够的抗压强度，可以在整个基础墙上分配土壤压力负荷。

Asked what he thinks about the system, Ben responds, “It earns its name, in my experience. We are looking at integrating it as a standard foundation for our future projects.”

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Kiley Jacques is senior editor at Green Building Advisor. Illustration by Patrick Welsh.Photos by Brian McAward.