Adobe House Plan 1930
1930 is a two-bedroom, two full-bath home with
Santa Fe style features, but with a pitched metal
26-gauge roof for rainy/snowy locales. It is fitted
with full passive solar glazing on its south side,
consisting of both Direct Gain windows and Trombe
walls. This south-solar array is about 330 sq. ft.
of glass, or about 25% of the interior heated/cooled
living space. A 25% ratio of south glass to interior
living area would overheat in an Albuquerque or Prescott
climate zone (5000'), but works well in the higher,
colder areas of Northern Arizona, Northern New Mexico
and Southern Colorado. At the same time, the additional
south glass is needed to offset heat loss from some
larger than usual north egress windows in the bedrooms,
and especially the Diningroom. In these areas, the
best energy saving technology the owner can afford
should be used in the choice of windows. There are
no windows on the west side of the home, and only
two smaller windows in the Master Bath on the east
side of the home. There are four insulated skylights,
one over the Master Bed room walk-in closet, one
over the Master Bath, one over the Wash/dry area,
and one over Bath #2.
Kitchen is partly open to the Living room over a half
wall and rejas (ornate spindles).
Sliding glass doors separate the Kitchen from the Dining room
on the north side. On the south side of the Kitchen, a secondary
entry door provides handy access when groceries are coming in.
Roughly 19 linear feet of upper cabinet space is shown in the
Kitchen and with about 18 linear feet of two-foot wide counter
space, not counting space for fridge, sink and stove.
are 14" thick adobe with a few 10" thick
adobe walls. In some code jurisdictions, or on certain
sites, thicker adobe walls may be called for. Most
plumbing walls are shown in 6" frame and most
closet walls in 4" frame. The exterior "skin" for
1930 is a two-inch insulation layer, with ¾" stucco
finish on the exterior. Interior adobe walls may be
left exposed, or may be plastered. Insulation levels
in the attic are shown as R44 in cellulose (recycled
paper using Boron compounds which are fire and insect
1930 is drafted with three fireplaces, although
any of those could be removed or replaced with a
wood-burning stove. Back-up heating is via a zoned
under floor radiant system and boiler. During many
portions of the heating season, passive solar alone
will provide sufficient energy, but as with all passive
solar systems, the owners are obligated to operate
night-time insulating curtains, to keep their daytime
gain from radiating to the night sky. That is not
too big a task with 1930, as the ten Trombe
walls will require no curtains!
square footages are: Air Lock Entry 66.5 sq. ft., Dining
room 112 sq.ft. (8x14'), Living room 289 sq.ft. (18x16'),
Kitchen 144 sq. ft. (12x12'), Solarium 140 sq. ft.
(40x 3.5'), Bath#2 70 sq. ft., Bedroom #2 144 sq. ft.
(12x12' not counting closet), Master Bedroom 248 sq.
ft. (14x14' and 8x6.5'), Master BR Closet 30 sq.ft.
(6x5'), Master Bath 72 sq.ft. (12x6')
Besides the closet areas above, A roughly 2 x 5.5'
linen closet is located just outside the Master Bed
room door. An obvious long-term storage possibility
is the attic, which provides roughly six feet of clearance
at its peak (if a person were standing on the bottom
truss chord at the center of the attic). Access hatches
may be located as desired by the builder, but Plan
1930 shows one above the porch next to the Dining
room (for exterior loading and unloading) and another
above the Kitchen, where the hatch may be disguised
by the exposed 1"x 8" deck at that point.
two north portales or porches are 61 and 144 sq.ft.
respectively. The larger porch has an entry to the
Dining room, making it a spot for barbecues, a table
and chairs on warmer summer days. The small Entry porch
is well situated for firewood storage, although the
Airlock room has plenty of extra space for firewood,
as well as hats, coats, etc.
the higher elevation areas where Plan 1930 is
at home, the cooling load will be minor and an ordinary
one-stage evaporative unit should be sufficient. Plan
1930 shows a corner position on the Dining room
porch for a downdraft cooler that allows a simple ducting
plan to be installed during the foundation work. A
local heating and cooling service should determine
proper CFM and duct sizes to fit local cooling loads
before construction begins. The overhanging roof on
the south side is calculated to shade the south wall
during the summer months. Basically, overhangs are
longer (shade more) in hotter climates and shorter
(shade less) in colder ones. In high elevation zones
above 6500', the south overhang should not extend more
than 18" out (measured horizontally). Between
5000' and 6500' it should not extend out more than
24". These are approximate guidelines, and may
be adjusted according to local microclimate. One method
is to leave the 26 gauge metal roof projecting out
the full 24", making sure that the roof framing
is a foot back from the edge of the metal eave. After
living in the house a year or two, the owner may decide
if sun is needed earlier in the fall, and later into
the spring. If so, the south eave may be trimmed back
a few inches or more with a metal saw.
1930 comes as a set of seven, 24" x 36" sheets
in black on white. The set contains Elevations (2
sheets), Floor Plan, Electrical Plan, Foundation
Plan, Viga Framing Plan, Wall Sections (with fireplace
section) and Radiant Heating Plan. Most scales are ¼"=1'
0", with some sections shown at ¾" =
1' 0" or 1"=1' 0".
set of Plan 1930, sent in a tube by priority
mail is $125, or three sets for $149. Because the prints
are B & W, they may be duplicated at most reproduction
shops for a nominal fee.