Materials & Resources: 13 possible points Overview Goals Choosing the proper materials for a project is very important for sustainability. “Construction and demolition wastes constitute about 40% of the total solid waste stream in the United States” 1 so if the proper materials are chosen that can be recycled from other materials, reused later and/or will last for a long time hopefully this percentage will decrease. The goal of the new GSB buildings, the Knight Management Center, is to achieve an exemplary recycling effort and to reuse as much material as possible.2 Methods The methods that need to be implemented to achieve the Stanford’s and Arup’s goals with the GSB project are the following. Before the new GSB campus can be built, two buildings that currently occupy the space need to be demolished. The material in those buildings should be carefully studied to find out to what extent it can be reused. To decrease the construction waste as much as possible also plays a major role in decreasing the impact of the project. Construction, demolition and land-clearing debris should be minimized and recycled as much as possible. When choosing the structural system as long as non structural elements it is important to see if materials with recycled contents, i.e. steel, can be used and then try to maximize the use of those materials. Also, to use regional materials reduces the environmental impacts resulting from transportation. The use of rapidly renewable materials and certified wood is encouraged. Lastly, make sure that trash bins and recycle bins are placed periodically around the building for occupants use. Architects vision of the Knight Management Center 1 LEED-NC, Version 2.2, p.233 Billings, Millea, Victorsson | LEED-NC Analysis: New GSB Campus | Page 1 2 Arup, New GSB Outline Specs Summary, 5/2/2007Materials & Resources: 13 possible points LEED-NC Scorecard LEED for New Construction v2.2 Registered Project ChecklistProject Name: Stanford GSB: Knight Management CenterProject Address: Stanford, CA Yes ? No Materials & Resources 13 Points Y Prereq 1 Storage & Collection of Recyclables Required 1 Credit 1.1 Building Reuse, Maintain 75% of Existing Walls, Floors & Roof 1 1 Credit 1.2 Building Reuse, Maintain 95% of Existing Walls, Floors & Roof 1 1 Credit 1.3 Building Reuse, Maintain 50% of Interior Non-Structural Elements 1 1 Credit 2.1 Construction Waste Management, Divert 50% from Disposal 1 1 Credit 2.2 Construction Waste Management, Divert 75% from Disposal 1 1 Credit 3.1 Materials Reuse, 5% 1 1 Credit 3.2 Materials Reuse,10% 1 1 Credit 4.1 Recycled Content, 10% (post-consumer + ½ pre-consumer) 1 1 Credit 4.2 Recycled Content, 20% (post-consumer + ½ pre-consumer) 1 1 Credit 5.1 Regional Materials, 10% Extracted, Processed & Manufactured Regionally 1 1 Credit 5.2 Regional Materials, 20% Extracted, Processed & Manufactured Regionally 1 1 Credit 6 Rapidly Renewable Materials 1 1 Credit 7 Certified Wood 1 Billings, Millea, Victorsson | LEED-NC Analysis: New GSB Campus | Page 2M&R Prerequisite 1: Storage and Collection of Recyclables LEED-NC Credit: YES | UNSURE | NO Prerequisite Intent Facilitate the reduction of waste generated by building occupants that is hauled to and disposed of in landfills. Feasibility This prerequisite must be achieved to receive LEED-NC certification, therefore it is pursued. This prerequisite should be easy to fulfill. An easily accessible area that serves the entire building and collects materials for recycling need to be present and that is always the case for Stanford’s campus buildings. Figure 1: Trash and Recycle Bins in GSB. Photo by Victor K Victorsson, 4/20/07 Analysis This prerequisite will be met by following Stanford’s own Sustainability Guidelines. Stanford works with the Peninsula Sanitary Service, Inc (PSSI) and PSSI provide garbage and recycling to the campus. The following is from Stanford’s Facilities and Operations webpage: “PSSI provides garbage and recycling services to the Stanford Campus. Recycling bins are usually located inside the buildings near high generating areas.” 3 Figure 2: Trash and Recycle Bins outside current GSB Photo by Victor K Victorsson, 4/20/07 3 Stanford Facilities and Operations: (http://recycling.stanford.edu/acadbuild/index.html) Billings, Millea, Victorsson | LEED-NC Analysis: New GSB Campus | Page 3M&R Credit 1.1: Building Reuse: Maintain 75% of Existing Walls, Floors & Roofs LEED-NC Credit: YES | UNSURE | NO Credit Intent Extend the life cycle of existing building stock, conserve resources, retain cultural resources, reduce waste and reduce environmental impacts of new buildings as they relate to materials manufacturing and transport Feasibility This credit aims to reduce landfill waste due to building demolition. The Knight Management Center will be built on a site that already has an existing building on it and will be demolished. Therefore this credit will be hard for the GSB to achieve. Figure 3: Existing Serra Buildings 651 and 655, with possibly reusable clay tile roofing, as seen from Hoover Tower. Photo by John Millea, 5/14/07. Analysis According to Arup’s civil narrative the existing building on the site will be demolished. They will stockpile material for reuse or recycling. According to the New GSB Outline Specs Summary from Arup a 75% by weight of construction, demolition and land clearing waste is proposed to be salvaged or recycled. Since the total percentage of the proposed material to be salvaged or recycled just reaches 75% it is unlikely that the 75% building reuse credit can be fulfilled. 4 Therefore, no point will be awarded for this credit. Billings, Millea, Victorsson | LEED-NC Analysis: New GSB Campus | Page 4 4 Arup, New GSB Outline Specs Summary, 5/2/2007Billings, Millea, Victorsson | LEED-NC Analysis: New GSB Campus | Page 5 M&R Credit 1.2: Building Reuse: Maintain 95% of Existing Walls, Floors & Roofs LEED-NC Credit: YES | UNSURE | NO Credit Intent Extend the life cycle of existing building stock, conserve resources, retain cultural resources, reduce waste and reduce environmental impacts of new buildings as they relate to materials manufacturing and transport Feasibility This credit will not be achieved since the 75% building reuse credit will not be achieved and therefore the 95% building reuse credit