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No. 1129 Project Ivy City Passive House Block B Status Certified
Lead CPHC Barbara Gehrung
Builder Habitat for Humanity, Washington D.C. Location Washington D.C., DC
QA/QC Rater Chris Conway Architecture Planning Zavos Architecture & Design Mechanical Systems Designer L.S. Grimm Inc. Consulting Engineers
Constr. Type Mixed timber-masonry Bldg. Function Multifamily Floor Area 3747
Project Type New Construction HERS Index LEED Rating
Energy Star Rating Heating Degree Days 4706 Cooling Degree Days 1549
Units 3 Certification Type PHIUS+ Certification Date January 19, 2017
Exterior Wall Gypsum Board 2x4, 16" o.c. w/Roxul comfort batt insulation, load bearing structure (balloon framing) MDF structural sheathing (air-control layer) 10" vertical tji w/dense-pack cellulose Buildright wood-fiber sheathing air space brick / fiber-cement cladding
Floor Marmoleum/engineered wood flooring OSB subfloor 10" tji w/densepack cellulose 4" concrete slab on grade
Roof Gypsum Board DB Intello Membrane 10"TJI's OSB structural decking (air-control layer) Polyiso Board Insulation TPO/EPDM membrane roof
Window Frame Either a) Serious 525 fiberglass b) Zola uPVC c) Klearwall uPVC
Window Glazing Klearwall Triple Glazing - final SHGC tbd
Entrance Door Klearwall door or Zola uPVC door
Ventilation Zehnder Comfoair 200
Heating System Ductless Mini-Split System per Specs w/ air-share transfer fans
Submitter Barbara Gehrung
Air-tightness 0.24 ACH50
Cooling System Ductless Mini-Split System per Specs w/ airshare transfer fans
Additional Consultants Michael Bonsby/Bonsby Heating and Air
Additional Notes Please find specs for Mechanical Equipment, if not part of the provided drawing sets in the folders of Project 1122, Ivy City Block A. Please see e-mail explaining shading calculations

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