38A-041 A-37'-10"Sub floor to top plateSubfloor level
1'-3"Existing Finish Floor
Fin Floor to
top of foundation
Existing house foundation
New basement slab poured flush to existing basement
Crawl Space under
Hall
12" LVL ledger bolted to existing
house framing. Provide ledgerlok
3/8" nominal x 5", 3 ea. 16" bay
12" wood I-joists @ 16" oc.
See framing plans S-1
Poured concrete buttress to support existing house footing
Entry to existing
basement10 1/4" Level of attic subfloor
7'-8 1/2"Ceiling height New Fin Fl to align with existing Fin Fl.
9.5" wood I-joists @ 16" oc
#_________
Ripped 2x ledger bolted to existing
house framing. Provide ledgerlok
3/8" nominal x 5", 3 ea. 16" bay
bulkhead
Stairs to basement
2x8 rafter construction strapped on
interior face with 1x strapping.
Insulate with 3" polyurethane spray foam
directly on sheathing and then insulate with
dense pack cellulose to face of strapping.
Sheetrock finish. R-40 total. Cont insul. = R-5
See detail #2, this page.
2x8 rafters 16" oc
strapping, horiz, 16' oc
1/2" sheetrock, caulked to
framing joints sealed
3" spray polyurethane insulation and
5" of dense pack cellulose, total R-38
Option for ventilated roof: Plywood or foam
vent baffles with 1" ventilation space and 6" of
polyurethane spray foam insulation.
2x6 plate, rafters notched and set with
hurricane ties, Simpson H2.5
3/4" T&G plywood subfloor
Wood I joists, 16" oc
Strapping 16" oc
1/2' sheetrock finish
caulked and sealed
Wall detail, see 3-A1
Siding and rainscreen, see detail 4A-1
Soffit, 1x10, vented as option
1x6 fascia with gutter mounted
5" K-style gutter, alumn.
Roofing paper, GAF Deck Armor, or Owens Corning
Deck Defense or equal.
Grace Ice and Water Shield, minimum one layer on eave
and rakes, 36" wide, laps over drip edge at eave.
Asphalt Laminated Architectural shingles by
CertainTeed, Landmark or equivalent
8" Aluminum drip edge
5/8" plywood roof sheating
2X8 rafters @ 16" oc
11 1/4:12 slope
12
11 1/4
12
4
2x6 plate screwed into LVL below, rafters
notched and set with hurricane ties,
Simpson H2.5
9.5" wood I-joists
2@ 9.5" LVL and 1@ 14" LVL bolted
together to form beam to support
roof load2x10 ceiling joists nailed to
lower sloping rafters,
hangered to LVL
2x12 lower sloping rafters @ 16" oc.
nailed to upper rafters
3/4" T&G attic subfloor, laps
over LVL beam
Strapping and sheetrock
Roofing, see detail #3
Spray polyurethane foam insulation
at wall eave edge, remainder of ceiling
under lower slope roof to have blown
cellulose, 12", R-40 6'-6" to bottom of joistsRevision Date Comments
MARK O.
GELOTTE
ARCHITECT
70 ELM STREET
HATFIELD, MA
01038
413 247 9624
Architect Date
Proj No:1606 George Lake
Date:1/31/17
Ween Residence
18 Laurel Street
Northampton, MA
01060
A-3
BUILDING SECTION
DETAILS
BUILDING SECTION
Scale: 1/2" = 1'-0"1
GENERAL NOTES
1. Do not scale from these drawings.
Refer to dimensions shown. Any
questions or descrepancies regarding
dimensions should be clarified by the
Architect.
2. For ceiling and wall insulation,
see details.
3. Air Barrier: A continuous air
barrier shall be installed on the
house. It shall be comprised of an
exterior air barrier provided by foam
insulation board on the walls of the
house and an interior air barrier on
the ceilings provided by the
sheetrock finish which shall be
sealed during the sheetrock
installation.
Attic with new
access to existing house
Detail #2 & #3
ATTIC LEVEL DETAIL
No Scale2
EAVE SOUTH
No Scale3
EAVE NORTH
No Scale4
LSL 4x6 engineered
wood post in wall to support
attic roof beam load, solid
block to foundation
Foam at rim 3"