1. Mohammed Zaid “ green houses presentation :
all ontribution
bearing to LEED
system credits
Using Insulated
Insulating Concrete Form (ICF) construction is a
concrete forms consistently strong contributor to any these
green build measures.
Perhaps the most recognized is the US Green
Foam blocks called insulated concrete forms or Building Council Leadership in Energy and
ICFs; offer a new style of concrete construction Environmental Design (LEED) Green Building
for residential as well as commercial structures. Rating System. LEED promotes a whole‐building
These hollow blocks are pounds lighter than approach with performance criteria in five areas
Standard masonry blocks because they are
made of expanded polystyrene ‐ similar to the Sustainable site development
white, Insulating foam used for take‐out coffee Water savings
cups. Energy efficiency
Materials selection
They are separate panels connected with Indoor environmental quality.
plastic ties.
During construction, the forms are filled with Using ICFs for the building envelope can reduce
concrete, becoming a permanent part of the temperature and humidity variables, and
wall assembly as well as adding a two‐inch thick facilitate the maintenance.
layer of foam insulation to each side of the wall.
insulating Concrete Forms offer the most
Reinforcing bars can be added for earthquake
straightforward solution for an environmentally
safety.
preferred, energy efficient thermal envelope so
Boasting an R‐value of 21 and up(see next
vital to sustainable construction.
section for R‐value definition), foam block walls
are so well insulated that manufacturers predict
a home's monthly heating and cooling costs can Energy Performance
be reduced up to 75 percent. As a result of the
added insulation, the size of the home's heating A quick review of the 69 possible points
and cooling system could be reduced by as available in the LEED for New Construction
much as 50 percent. (LEED NC) identifies energy savings as the most
heavily weighted criteria, with up to 10 points
The walls are fire, earth quake and termite achievable. This strong focus on energy savings
resistant, and the layers of foam insulation is appropriate considering the bulk of a
provide excellent soundproofing as well as building’s environmental footprint is caused by
backing for drywall on the inside and stucco, lap the energy consumed in the heating and cooling
siding or brick on the outside. of a structure over the course of its lifetime.
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2. Mohammed Zaid “ green houses presentation :
Sustainable Construction
Materials and Resources Credit 8, Durable
Building with the intent of minimizing
construction waste due to premature failure of
the building from moisture and structural
deterioration.
Durability
ICFs protect the concrete with layers of EPS
foam, which is a stable material and not subject
to deterioration or loss of thermal value.
Five Ways ICFs Help Build Green
1. Optimized Energy Performance
2. Durability
3. Recycled Material Content
4. Local Materials
5. Improved Indoor Air Quality
Reduced foot print
Sustainable Sites Credit 5.1 calls for reducing
the development footprint and limiting site
disturbance to conserve existing natural areas.
ICF construction can reduce impact to a
construction site, as the bracing is typically
erected on the inside of the ICF wall, with
limited construction activity around the
perimeter.
Noise reduction
Stiffened Raft
Compared to a typical wood frame wall, only
about one‐quarter to one‐eighth as much sound
penetrates through an ICF wall. Scientists would
describe loud speech on the opposite side of a
frame wall as "audible, but not intelligible." On
the opposite side of an ICF wall, a listener
would "strain to hear" loud speech. It would be
virtually "inaudible."
Insulated Concrete Form Flat system
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3. Mohammed Zaid “ green houses presentation :
P
oints towards highly likely that the aggregate concrete used to
fill the forms will qualify.
LEED certification
Sustainable Sites Credit 5‐Protect or
restore habitat
ICF Construction, Green roof & precast hollow
core slabs can help to protect the habitat on a
construction site, bracing is typically installed
The following are points that can be gained only on the interior of the structure and
directly by using ICF system minimal construction activity occurs outside the
perimeter
Energy & Atmosphere prerequisite 2
–Minimum Energy performance Sustainable Sites Credit 7‐ Landscape
(Required) and exterior Design to reduce heat
islands, Non‐Roof
An ICF building envelope exceeds the
mandatory performance requirements, ICF walls provide flexibility when choosing
insulation, thermal‐mass and reduced air exterior finish including Light colored and highly
infiltration. reflective finishes.
Green Roofs reduces air pollution and reduces Proposed Villa here white & beige colors have
required cooling during summertime which been chosen for the external walls which is
reflect Minimum Energy needed for building always used to reflect sunlight directly falls on
cooling. the external walls which reduces the heat gain
for the walls
Materials & resources Credit 4‐
External landscaping and Green roof
Recycled Content landscaping have been chosen to reduce heat
The polypropylene webs in most ICFs are island
typically made of 100% post‐industrial recycled
materials and often make up approximately
60% of the product by weight. In addition
Portland cement used in the form cavity can
contain a significant amount of fly ash
(Recycled)
Green media made of chosen 100% nature
fibers
Materials and resources credit 5 –
Regional materials
Depending on the building site location, some
or all of the ICF materials may have been
manufactured within a 500 mile radius ( if the
product is shipped by water or rail , this radius
is expanded to 1500 miles).in addition , it is
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4. Mohammed Zaid “ green houses presentation :
nsulated Maximum Aggregate Size
The nominal maximum size of coarse aggregate shall
concrete not exceed one‐fifth the narrowest distance
between sides of forms, or three‐fourths the clear
spacing between reinforcing bars or between a bar
forms and the side of the form.
Exception: When approved, these limitations shall
not apply where removable forms are used and
DIMENSIONS OF WALLS workability and methods of consolidation permit
concrete to be placed without honeycombs or voids.
Concrete walls constructed in accordance with
PCA/ICFA requirements shall comply with the Compressive Strength
shapes and minimum concrete cross sectional
dimensions required Other types of The minimum specified compressive strength of
forming systems resulting in concrete walls not concrete, f 'c, shall be (17.2 MPa) at 28 days. For
in compliance with ICF requirments shall be buildings assigned to Seismic Design Category D0, D1
designed in accordance with the applicable or D2, the minimum f 'c shall be (20.7 MPa).
building code, or where there is no code in
accordance with ACI 318. Steel Reinforcement
Flat Wall Systems Reinforcement shall comply with ASTM A615, ASTM
A706,or ASTM A996. ASTM A996 bars produced
from rail steel shall be Type R. In all buildings
Flat walls shall have a minimum nominal assigned to Seismic Design Category D0, D1 or D2,
concrete thickness of (152 mm) for basement reinforcement shall comply with ASTM A615 Grade
walls, and (102 mm) for above‐grade walls. 60 (420 MPa), provided the steel complies with
For multiple dwellings assigned to Seismic Section 21.2.5 of ACI 318, or ASTM A706 Grade 60
Design Category C and all buildings assigned to (420 MPa).
Seismic Design Category D0, D1 or D2, the
minimum nominal thickness of above grade Lap Splices
walls shall be (152 mm).
The maximum gap between noncontact parallel bars
CONCRETE at a lap splice shall not exceed the smaller of one‐
fifth the required lap length and 6 inches (150 mm).
Concrete and Materials for Concrete
Materials used in concrete, and the concrete Continuity of Wall Reinforcement
itself shall conform to requirements of the Between Stories
applicable building code, or where there is no Vertical reinforcement shall be continuous from the
code shall conform to ACI 318. bottom of the foundation wall to the roof. Where
splices are needed to provide the required
continuity, dowel bars with a size and spacing to
Concrete Mixing and Delivery match the vertical above‐grade concrete wall
reinforcement shall be embedded in the foundation
wall the distance required to develop the
Mixing and delivery of concrete shall comply
dowel bar in tension .
with the applicable building code, or where
there is no code shall be in accordance with
ASTM C94 or ASTM C685.
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5. Mohammed Zaid “ green houses presentation :
ypical
details
Some of the typical details for
walls reinforcement and
connections
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