Homes-v4 MRc3: Environmentally preferable products

  • Trades Training - v4 - no toolkit

    Register for our free forumAlready a member? Click to login
  • MR Credit 3: Construction waste management

    Intent

    To reduce construction waste generation and to reuse and recycle debris.

    Requirements

    Reduce total construction waste or divert from landfills and incinerators a large proportion of the waste generated from new construction. Use the tables below to calculate the percentage of waste avoided or recycled. Exclude excavated soil, land-clearing debris from calculations. Include materials destined for alternative daily coverMaterial other than earthen material placed on the surface of the active face of a municipal solid waste landfill at the end of each operating day to control vectors, fires, odors, blowing litter, and scavenging. Generally these materials must be processed so they do not allow gaps in the exposed landfill face. (ADCAlternative daily covers are material other than earthen material placed on the surface of the active face of a municipal solid waste landfill at the end of each operating day to control vectors, fires, odors, blowing litter, and scavenging. Generally these materials must be processed so they do not allow gaps in the exposed landfill face.) in the calculations as waste (not diversion). Any waste-to-energy is not considered recycling for this credit.

    Table 1. Baseline waste for LEED reference home

    Bedrooms Conditioned floor area (sf) Waste (lbs)
    1 1,000 4,200
    2 1,600 6,720
    3 2,200 9,240
    4 2,800 11,760
    5 3,400 14,280
    6 4,000 16,800
    7 4,600 19,320
    8 or more Area (sf) * 4.2



    Table 1a. Baseline waste for LEED reference home

    Bedrooms Conditioned floor area (sq. m) Waste (kg)
    1 93 1 905
    2 148 3 048
    3 204 4 191
    4 260 5 334
    5 315 6 477
    6 371 7 620
    7 427 8 763
    8 or more Area (sq. m) * 20.5



    For multifamily buildings, use the project’s floor area for any non-unit spaces, and add it to the floor area of the LEED reference home calculated for each unit.

    Calculate the waste generated by the project according to the following equation:

    Project construction waste = Total waste - (Recycled waste * 0.25)

    To convert volume to weight, assume 500 pounds per cubic yard (296 kg per cubic meter) of mixed construction waste, or use Table 2 to calculate the weights of specific waste products.

    Table 2. Volume-to-weight conversion for construction and demolition debris

    Material LB/CY TONS/CY CY/TON KG/cubic meter
    Aluminum (scrap, whole) 175 0.09 11.1 103.8
    Asphalt 1,380 0.69 1.4 818.7
    Brass (scrap) 906 0.45 2.2 537.5
    Brick (common hard) 3,024 1.5 0.67 1794
    Cardboard (uncompacted) 100 0.05 20 59.3
    Carpet & Padding (loose) 84 0.04 25 50
    Concrete 1,855 0.92 1.4 1100.5
    Copper (scrap) 1,094 0.56 1.8 649
    Dirt (loose, dry) 1,890 0.94 1.1 1121.2
    Drywall 500 0.25 4 296.6
    Glass (broken) 2,160 1.1 0.91 1281.4
    Metal (scrap) 906 0.45 2.2 537.5
    Mixed C&D Debris 900 0.45 2.2 533.9
    Mixed Waste/Trash 350 0.17 5.9 207.6
    Rock (loose) 2,570 1.28 0.78 1631.5
    Roofing (wood shake, shingle) 435 0.22 4.5 258
    Tree Limbs & Stumps 1,080 0.54 1.9 640.7
    Wood (scrap, loose) 330 0.17 5.9 195.7
    Yard Trimmings (mixed) 108 0.05 20 64





    Source: Contra Costa Waste Authority

    Table 3. Points for reducing construction waste below baseline

     

     

     

     

     

     

    Percentage reduction Points
    10% 0.5
    20% 1.0
    30% 1.5
    40% 2.0
     50% 2.5
     60% 3.0




1 Comments

0
0
Mark Murphy
Sep 29 2016
Guest

Homes / Low Rise Multifamily

Project Location: United States

Our company manufactures Ornamental Fence using recycled steel. Does this product fit into any "Environmentally Preferred Product" category ? Does our product add LEED points in ANY category ?

Post a Reply

Start a new LEED comment thread

Feb 26 2017
Type the characters you see in this picture. (verify using audio)
Type the characters you see in the picture above; if you can't read them, submit the form and a new image will be generated. Not case sensitive.

Copyright 2017 – BuildingGreen, Inc.