DRAFT GreenPoint Rated Existing Home Rating Manual version 6.0 | Page 45

D

Structural Frame and Building Envelope

D5.

RETROFIT/UPGRADE STRUCTURE FOR LATERAL LOAD REINFORCEMENT FOR WIND OR SEISMIC

CRITERIA FOR QUALIFICATION Up to three points of credit are available, as follows: ? One point is available for a partial lateral load reinforcement upgrade/retrofit. The retrofit can include an upgrade to the foundation, anchoring of the mudsill, sheathing cripple walls, addressing a soft story, or other partial upgrades to portions of the home. These upgrades are typically voluntary and are not comprehensive. Three points are available for a full upgrade to the entire home to meet current code requirements for lateral load reinforcement. Seismic retrofits must meet current code requirements to qualify for this measure. The retrofit must address the entire home and include upgrades for anchoring, sheathing or cripple walls, shear walls, and hold downs as appropriate. To receive credit for this measure, work can typically only be accomplished on a gut remodel or completed in phases.

?

Because homes are built under varying codes and construction practices, an engineer may be needed to assess structural integrity, complete calculations, and make recommendations for improvements. A home may use Plan Set A (see Additional Resources for more information) or other pre-approved engineering drawings as allowable by the jurisdiction that has authority. Some seismic upgrades may require project-specific engineering. VERIFICATION Field Verification: The building inspector will complete field compliance inspection. Documentation: The builder or homeowner will submit a copy of the finalized permit from the jurisdiction having authority to the Rater for verification. The Rater may ask for structural plans or assessments to verify the extent of the upgrades. INTENT To reduce hazard by addressing lateral load vulnerability through partial rehabilitation. To promote public safety and welfare by reducing risk of damage from an earthquake.

D6.

ENERGY HEELS ON ROOF TRUSSES

CRITERIA FOR QUALIFICATION One point of credit may be awarded for designing and installing a roof truss with a raised heel that allows for 75% of the depth of the attic insulation value at the outside edge of the exterior wall, while also allowing for attic ventilation as required. Flat roofs that have insulation that extends over the exterior wall comply with this measure.

GreenPoint Rated Existing Home Rating Manual Version 6.0, September 2013 © Build It Green

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