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Green Building Design. Scott Lowe Professor Civil and Environmental Engineering Department Manhattan College. Buildings are Complex Systems !. 1. Site. High density urban. Extreme slope. A Green Site?. Brownfield. Not Green. Pristine land. 2. Foundations.

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green building design

Green Building Design

Scott Lowe

Professor

Civil and Environmental Engineering Department

Manhattan College

1 site
1. Site
  • High density urban
a green site
A Green Site?
  • Brownfield
not green
Not Green
  • Pristine land
2 foundations
2. Foundations
  • Building load must be spread out or transferred to rock
  • Footings
  • Piles
  • Caissons
5 plumbing
5. Plumbing
  • Water supply
    • Cold water
    • Hot water
  • Wastewater collection
  • Heating pipes
  • Gas
  • Fire system
slide15

Internal walls

  • Finish – walls/floor
how green is my building
How Green is my Building?
  • US Green Building Council established the LEED rating system in 1998
  • Leadership in Energy and Environmental Design
  • Points system
leed system new building
LEED System (New Building)
  • Site (26 pts)
  • Water (10 pts)
  • Energy (35 pts)
  • Materials (14 pts)
  • Indoor Quality (15 pts)
  • Rating out of 100
  • 40-49 certified
  • 50-59 silver
  • 60-79 gold
  • 80+ platinum
leed site example
LEED Site example
  • Bike racks
  • Changing rooms
leed energy example
LEED Energy example
  • Generate energy
energy
Energy
  • Buildings consume massive amounts of energy
  • 40% of all US energy
  • 70% of all US electricity
  • Where is it used?
sizzling hot energy topics
Sizzling Hot Energy Topics
  • Do it more efficiently
  • Generate your own
  • Keep your heat but
  • Don’t lose your cool
efficiency
Efficiency

Efficient HVAC systems

  • Use high efficiency systems
  • 90%+ possible
  • High capital cost
  • Will pay this back
  • Not sexy
create energy
Create Energy
  • Solar - active
solar passive
Solar - passive
  • Trombe wall
geothermal
Geothermal
  • ~6 ft below ground the temperature is ~50OF all year
  • Run water pipes through ground
  • In summer hot water enters ground – cool exits
  • Use this to cool air for the HVAC system
  • In winter reverse process
slide33
Geothermal

Piping

Installation

~6 ft underground

slide34

Excavation for geothermal pipe field

CEEN201: Green Building Design

slide35

Geothermal heat exchanger

CEEN201: Green Building Design

geothermal heat exchanger
Geothermal heat exchanger

CEEN201: Green Building Design

geothermal lake construction
Geothermal lake construction

Sherman Hospital Illinois

CEEN201: Green Building Design

keep your heat
Keep Your Heat
  • and don’t lose your cool
  • Insulate, insulate, insulate !!!!!!!!!!!!!!!!!!
  • Biggest bang for your $
heat transfer 101
Heat Transfer 101
  • Heat moves from hotcold
  • Driven by temp gradient
  • Analogous to fluid flow (high P to low P)
  • And dispersion (high Conc. to low Conc.)
slide40

Q = A DT

R

Q = heat flow Btu/hr

DT = temp difference oF

A = wall area ft2

R = resistance oF - ft2 / (Btu/hr)

insulation
Insulation
  • Typical building codes
    • Walls R-19
    • Roofs R-30
  • R values for each layer is added up
r value of a house exterior wall
R Value of a house exterior wall
  • ½” sheetrock + 3 ½ “ insulation + ½” plywood + wood siding + tyvek
  • R = 0.45 + 11 + 0.63 + 0.8 + 0.85
  • R value = 13.73
windows
Windows
  • Poor insulators
  • Building Code = double pane
  • Leaks are a problem
  • Single pane of ¼” glass, R= 0.9
  • With storm, R=2
  • Double pane ~2
  • Triple pane ~3
water
Water
  • Water supply
  • Under pressure
collection system
Collection System
  • Only 1 drainage system
  • Toilets
  • Shower
  • Bath
  • Sinks
  • Laundry
  • Dishwasher
  • Floor drains
black and grey water
Black and Grey water

Black

Grey

Can be reused but NOT for drinking

Flush toilets, water gardens

Shower

Wash basin

Laundry

  • Can NEVER be reused
  • Goes to sewer system
  • Toilet
  • Kitchen sink
  • Dish washer
complex to re plumb existing buildings
Complex to re-plumb existing buildings
  • Need to create 2 drainage systems
  • Need to store and distribute grey water
  • Tanks and pumps
  • Clean water back-up in case not enough grey water
  • Etc,etc
roofs can be green
Roofs can be Green
  • Or black or white or blue
slide53

The End

  • Bank Of America Tower
  • 1200 ft tall, 55 floors
  • 2.1 million ft2
  • LEED platinum
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