CRITERIA FOR GREEN BUILDINGS IN LEBANON

Prepared by: The “Order of Engineers & Architects of Beirut” in collaboration with:Maya Karkour, Sara Jaber, Aram Yeretzian, Bassam Haber, Ziad Haddad & Wissam Tawil

Table of Contents

A. Introduction

B. Green Building Criteria1. Energy

2. Water Use Efficiency

3. Indoor Environmental Quality

4. Environmental Impact

A- Introduction

• Reasons to prepare the criteria

• Scope of the criteria - Building Types - Climatic Zones

Four Climatic Zones as defined in the Thermal Standard for Buildings in Lebanon - 2005

B. Green Building Criteria

Energy

Indoor Environmental Quality

Water Use Efficiency

Environmental Impact

1. Energy

Follow TSBL 2005 as issued by Ministry of Public Works & Transportation for insulation of walls, roofs, floors & glazed elements

• Building Envelope • Energy Efficiency

• Elevators & Escalators

Minimum energy efficiency of DX, chiller or boilers to follow Ashrae 90.1 – 2007

Electric Hot Water Heaters to follow RT 2005 – art 58

Elevators:

Building with more than 4 floors, use VVVF technology

Escalators:

Use on demand or reduce speed

• Artificial Lighting

Building Type Maximum averageWatts per square meter(W/m2) across total building area

Commercial/Public: Offices, Hotels, Resorts, Restaurants

12

Educational Facilities 13

Manufacturing Facility 14

Retail Outlets, Shopping Malls , Workshop

16

Warehouses 9

Lighting Power Densities for building (Interior) Building Area Maximum Watts per square meter or

linear meter

Uncovered parking lots and drives 1.6 W/m2

Walkways less than 3 meters wide 3.3 W/linear meter

Walkways 3 meters wide or greater 2.2 W/m2

Outdoor Stairways 10.8 W/m2

Main entries 98 W/linear meter of door width

Other doors 66 W/linear meter of door width

Building Facades 2.2 W/m2 for each illuminated wall orsurface or 16.4 W/linear meter for eachilluminated wall or surface length

Entrances and gatehouse inspection stations at guarded facilities

13.5 W/m2

Lighting Power Densities for building (Exterior)

• Occupancy / Motion Sensor • Electronic Ballasts

• Control System • Heat Recovery

•Common lobbies

•Parking

•Circulation

•Stairs

•Keeping a max of 25 % of the normal lighting

•High frequency electronic ballast for fluorescent & Metal Halides conforming to IEC 60598

•Independent temperature control for A/C per zone.

•Hotel room management

•Thermostatic valve for radiators

•Outside compensation recommended

•100 % FA AHU’s with heat recovery system.

•Heat recovery on generators for hotels, hospitals, industrial facilities of certain areas.

• Insulation on Pipes & Duct • Energy Metering

• Renewable Energy

•As per Ashrae Standards 90.1.2007 for ducts & pipes

• Electric metering for building with multiple Tenant.

• Energy meters for building supplied with central chilled water or heating system.

• In single family houses, Solar Panels to cover a min 70% of yearly hot water demand.

• Residential building up to 4 stories, Solar Panels to cover min 30 % of yearly hot water demand.

• In case of excessive external lighting above the allowable rate in Residential Building, PV panels shall be used to cover this excess.

2. Water Use EfficiencyA. Building Water Use Reduction

• Efficient Sanitary Fixtures • Condensate Drain Recovery

•Automatic shut off for public faucets

•Building with more than 200 tons, 80 % of condensate to be recuperated for irrigation, toilet flushing or cooling towers in zones 1 & 2

Fixture type Maximum Flow Rate Applicable to

Toilets Dual Flush 3Lit / 6Lit all toilets in building

Hand Wash Faucets 6 Lit / Min 2/3 of faucets in building

Showerheads 9 Lit / Min 2/3 of showerheads in building

Kitchen Sinks 9 Lit / Min all kitchen sinks in building

Urinals 1 Lit / Flush or waterless all urinals in building

B. Site Water Use Reduction

• Efficient Irrigation • Rain Water Harvesting

•Controllers with moisture sensors.

•Drip or subsoil water delivery system.•Obligatory all single family houses, and collected from at least 25 % of roofs & external terraces.

•Used for irrigation, toilet flushing, or general cleaning.

3. Indoor Environmental Quality

• Natural Ventilation • Mechanical Ventilation

•Openable area is 4 % of the internal floor area.

•Opposite sides if between 7 & 15 m depth.•Follow Ashrae 62.1.2007 for occupied areas.

•Follow decree 7964 for parkings.

• VOC Emissions – Paints & Coatings

• Thermal Comfort

Lower Limit Upper Limit

COOLING Dry bulb Temperature

23°C 26°C

Relative Humidity 40% 60%

HEATING Dry bulb Temperature

18°C 22°C

Relative Humidity 30% 60%

•Low Volatile Organic Compound for min 80 % of the paints internal surface.•Comply with: Green Seal GS-11

EN 13300:2001

EU Directive 2004/42/CE21

95 % of the year

• Daylighting • Acoustic Performance

•Comply with Lebanese Construction Law •Comply with Lebanese Official Gazette 1269/1996

4. Environmental Impact4.1 Impact of Construction Works

• Dust Control • Erosion & Sedimentation Protection

•Top soil shall be covered by sheets to prevent air pollution •Silt fences to be installed around the site to prevent annoyance to neighboring properties and land.

• Protection of Ecological Features • Noise Control

• Construction Pollution • Construction Waste Management

•Trees, hedges, ponds, water sources, wet land, not within building foot print shall be protected

•Operate during the hours permitted by the applicable local regulations.

•Dumping of excavated soil or construction waste onto adjacent sites is prohibited.

•Mandatory for Grade A project as defined in Decree 7964

4.2 Landscape

• Vegetated Walls • Vegetated Roofs

• Planters •25 % of landscape area shall be vegetated.

•In case of no landscape area, then 10 % of site area shall be vegetated on roofs, walls or planters.

4.3 Heat Island Effect

•All buildings should have another 25 % either:

- vegetated

- Covered with high SRI material

- Shaded by SRI material

- Shaded by solar panels

- Or a combination of the above

•Roofs shall have 50 % of the non tech area:

-Vegetated

-Covered with high SRI

-Shaded with high SRI

-Shaded by solar panels

-Or a combination of the above

SRI: Index combining reflectivity & emissivity.

• Night Time Light Pollution • Operational Waste

• Refrigerant Impact

•Downward lights are required

•Zero Ozone depleting potential (ODP)

•Min 2 containers or bins for recyclable waste

Conclusion:

• A good start for implementing Green Philosophy in the construction law.

• Neutralize the impact of the increase in exploitation rate.

• Enhance the indoor quality environment.

• Enhance the construction quality.

• Reduce the energy and water consumption.