Analysis of Fulfillment Criteria of Green Building Concept in According to Green Building Council Indonesia (GBCI) at An Existing Conventional Building

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Analysis of Fulfillment Criteria of Green Building Concept in According to Green Building Council Indonesia (GBCI) at An Existing Conventional Building

HKBP Ciputat Church

Hamonangan Girsang, Aldila Septiana Hernasari, Fahmi, Novika Candra Fetilia Faculty of Engineering, Mercu Buana University Jakarta, Indonesia

[email protected], [email protected], [email protected], [email protected]

Abstract

ased on the calculation of the national greenhouse gas inventory, it shows that the level of greenhouse gas emissions in 2016 increased by 2.9% per year during the 2000-2016 period (DitJen PPI-KLHK, 2017). So, by prioritizing environmental concern, the concept of Green Building is promoted. The Green Building assessment itself is divided according to the type of building. And in the present, one of the assessments needed is an assessment of the Green Building concept in existing buildings considering that many buildings have been built without using the green building concept and the less land can be used to build new buildings with the green building concept. In this case, the Ciputat HKBP Church is one of the buildings built without using the Green Building concept. And by using the Greenship Rating Tools published by the Green Building Council Indonesia (GBCI), an analysis was carried out at the Ciputat HKBP Church regarding what can be done in non-green buildings to become buildings with a green building concept. After analyzing the building, it was found that the Ciputat HKBP Church was able to apply the points of optimization suggestions which in total would get 54 points out of a total of 117 points, or it can be said that they meet the silver mark. As well as the required cost in implementing the green building concept in accordance with the results of the analysis and points of optimization suggestions for the building of Rp. 55,818,559, -

Keywords :

Green Building, Green Building Council Indonesia, Greenship Rating Tools

1. Introduction

Building is a physical form of the result of construction construction work which is partially or completely integrated with the place of its position on and / or in the land and / or water, which functions as a place for humans to carry out their activities, whether for shelter or residence, religious activities, business activities. Social, cultural and special activities (Big Indonesian Dictionary Online). Green Building itself can be defined as a building planning and design through a process that considers the environment and uses resources efficiently throughout the building's life cycle from site processing, design, construction, occupancy, maintenance, renovation and building changes. Basically Green Building is a practice in building, starting from structural work to implementing the construction as a whole. In real terms, this must be endeavored so that development actors are responsible for the environment and existing resources as efficiently as possible, in one building's life cycle (Firnando et al., 2015). So, not only with design capital, but also the construction process, building maintenance, to the renovation and deconstruction process, if conditions need to be carried out in existing buildings.

Green buildings are designed to reduce the impact of the built environment on human health and nature, through efficient use of energy, water and other resources, protect the health of residents and increase worker productivity, reduce solid, liquid and gas waste / discharge, reduce pollution / solid pollution, liquid and gas and reduce environmental damage.

Green Building not only focuses on ecological issues but also pays attention to the problem of beauty and harmony between the structure of the building and the natural environment around it, and does not forget about environmental improvement by combining architectural beauty retreats with environmental friendliness to maintain a balance between development and environmental preservation. The application of the Green Building concept is part of green practice or environmentally friendly actions that will reduce the life cycle cost of buildings. The green building movement itself has a special institution to certify environmentally friendly buildings, which is also called the World Green Building Council (WGBC). In Indonesia, there is the Indonesian Green Building Institute or better known as the Green Building Council Indonesia (GBCI).

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Green Building Council Indonesia (GBCI) is a non-governmental and non-profit organization that was founded in 2009. GBCI was founded by a synergy of stakeholders including professionals in construction services, the building and property sector industry, government, educational and research institutions, professional associations and caring communities. environment. GBCI itself has received Emerging Member status from the World Green Building Council (WGBC) based in Toronto, Canada. Until now, there are 68 countries that are members of the WGBC and there is only one Green Building Council in each country representative. The main mission or goals of each Green Building Council are almost the same and aim to implement and educate about Green Building more broadly in their respective countries. The mission of the GBCI itself is to transform into a green society that is oriented towards sustainability.

Each Green Building Council also has a name and grading pattern in its respective green building certification. GBCI has a certification device called the Greenship Rating Tools. Greenship Rating Tools is the name of a tool for assessing building performance in terms of implementing the green building concept that reflects Indonesia's unique ecological, social and industrial principles. The assessment tools that have been produced and ready to be implemented by GBCI are Greenship for new buildings (New Buildings) and Greenship for built buildings (Existing Buildings) in all sectors of commercial buildings (offices, shops, hospitals, hotels and apartments) (Green Building Council Indonesia, 2016).

2. Research Methodology

This research used mixed methods, which means using qualitative methods and quantitative methods.

Where qualitative methods are used for data collection in determining whether the HKBP Ciputat Church building is an environmentally friendly building according to the Green Building Council Indonesia (GBCI) criteria. And quantitative methods are used to process data on cost requirements from analysis of optimization points from non-green buildings to green buildings.

The data used in analyzing the green building concept based on the Green Building Council Indonesia (GBCI) criteria includes primary and secondary data. Which primary data is obtained from direct surveys to the building location or from the data of the Ciputat HKBP church management, which include:

1. Data of HKBP Ciputat church building 2. Conditions of the Church Environment 3. Existing Building Condition

While secondary data is obtained from institutions related to green building criteria, namely the Green Building Council Indonesia (GBCI), the data needed in this study are:

1. Greenship Rating Tools

3. Results and Analysis

3.1. Green Building Concept Assessment

The initial requirements for the assessment are based on the assessment form listed in GREENSHIP for Existing Buildings version 1.1. The assessment criteria include several categories, namely: 1) Appropriate Land Use (ASD), 2) Energy Efficiency and Conservation (EEC), 3) Water Conservation (WAC), 4) Material Sources

& Cycle (MRC), 5) Air Quality & Indoor Air Comfort (IHC), and 6) Building Environmental Management (BEM) (Teknika, 2017).

Each category will consist of several prerequisite ratings and regular ratings. Where the prerequisite rating must be met first for a building, the assessment can be continued using the ordinary rating. If the building does not meet the prerequisite rating, the rating cannot be continued to the normal rating. The analysis process of the green building concept assessment at the Ciputat HKBP Church uses the GREENSHIP form and by observing field conditions together with the Ciputat HKBP Church management.

3.1.1. Appropriate Site Development (ASD)

The category of Appropriate Site Development consists of 2 prerequisite ratings and 7 regular ratings.

This category includes the maximization of buildings in using the land and the surrounding environment. In the ASD, the prerequisite assessment requires a commitment letter from the top management of the Ciputat HKBP church in maintaining the exterior of the building, integrated pest management, and management of habitat around the site using non-toxic materials. Also required a statement of commitment in the action and campaign to reduce private motorized vehicles. While the ASD category is the usual rating, namely: 1) ASD 1 Community Access, 2) ASD 2 Reduction of Motor Vehicles, 3) ASD 3 Landscape Areas, 4) ASD 4 Heat Island Effect, 5) ASD 5 Rainwater Runoff Management, 6) ASD 6 Area Management, and 7) ASD 7 Facilities around the building. The ratings for this prerequisite rating can be seen in Table 1.

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Table 1: Preliminary Assessment Table for Appropriate Site Development Category Prerequisites (ASD)

Code Rating Description Actual

Points

Church Management Appropriate Site Development (ASD) (P = Assessment Prerequisites)

ASD P1 Site Management Policy

There is a statement letter containing the commitment of the church management regarding the maintenance of the building

exterior, pest and weed management and habitat management around the site using non-toxic materials.

0 V

ASD P2 Motor Vehicle Reduction Policy

There is a statement letter containing the commitment of the church management to carry out various activities to reduce the

use of private motorized vehicles, for example: public vehicle coupons, parking fees, and some.

0 V

There is a movement to encourage a reduction in the use of private motorized vehicles by at least installing a permanent written campaign on each floor, for example: stickers, posters, emails, and

so on.

0 V

(Source: Research Results, 2020)

The Ciputat HKBP Church building does not have a commitment letter from the top management for building exterior maintenance, integrated pest management, habitat management around the site or a statement of commitment in actions and campaigns to reduce private motor vehicles in the community using the Ciputat HKBP church, so that the rating is prerequisite for ASD does not meet the criteria. Then it cannot be continued for the assessment of other parameters.

3.1.2. Energy Efficiency and Conservation (EEC)

The category of Energy Efficiency and Conservation or what can be called Energy Efficiency &

Conservation consists of 2 prerequisite ratings and 7 regular ratings. This category includes optimization of efficiency in buildings. The EEC rating is a prerequisite for an energy management policy and plan as well as a minimum building energy performance. While the usual EEC rating category, namely: 1) EEC 1 Optimization of Energy Use Efficiency in Buildings, 2) EEC 2 Re-commissioning of air conditioning, 3) EEC 3 Energy Performance Systems, 4) EEC 4 Recording and Monitoring of Energy Use, 5) EEC 5 Operation and Maintenance, 6) EEC 6 Use of Renewable Energy, and 7) EEC 7 Reducing Energy Emissions. The ratings for this prerequisite rating can be seen in Table 2.

Table 2 Preliminary Assessment Table Prerequisite for Energy Efficiency & Conservation (EEC)

Points

Church Management Energy Efficiency and Conservation (EEC) (P = Assessment Prerequisites)

EEC P1 Policy and Energy Management Plan

There is a statement letter that contains a commitment from the church management which includes: a procedure (SOP) which includes monitoring, savings targets and a specific timeframe action plan by the

energy team

0 V

There is a movement to encourage energy savings by at least installing a permanent written campaign on every floor, for example: stickers,

posters, e-mails, and so on.

0 V

EEC P2 Minimum Building Energy Performance

There is an energy saving of 5% or more, between the average energy consumption of the last 1 year and the average energy consumption of

the previous 1 year

0 V

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A prerequisite for EEC is the existence of a procedure (SOP) which includes monitoring at the Ciputat HKBP Church building does not have a statement of commitment regarding the existence of procedures that include monitoring, savings targets and action plans by the energy team and there is no campaign to encourage energy savings in the form of stickers , posters and emails. The management of the Ciputat HKBP church has not yet had a report on electricity consumption based on PLN bills for the last 2 years. So that the prerequisite rating for the EEC does not meet the criteria. Then it cannot be continued for the assessment of other parameters.

3.1.3. Water Conservation (WAC)

In the water conversion category or what is also called Water Conservation, it consists of 1 prerequisite rating and 8 regular ratings. This category discusses the procedures for the use and management of water in the Ciputat HKBP church building. The prerequisite rating required for the WAC is a statement letter from the building management regarding monitoring procedures, savings targets and action plans by the water conservation team. As well as a permanent written campaign to encourage water conservation in the form of stickers, posters or emails. Typical ratings on WAC include: 1) WAC 1 Water Sub-Metering, 2) WAC 2 Water Monitoring Control, 3) WAC 3 Fresh Water Efficiency, 4) WAC 4 Water Quality, 5) WAC 5 Recycled Water, 6) WAC 6 Potable Water, 7) WAC 7 Deep Well Reduction, and 8) WAC 8 Water Tap Efficiency. The ratings for this prerequisite rating can be seen in Table 3.

Table 3. Preliminary Assessment Table Prerequisite for Water Conversation Category (WAC)

Points

Church Management Water Conservation (WAC) (P = Assessment Prerequisites)

WAC P Water Management Policy

There is a statement letter containing a commitment from the church management which includes: the existence of a procedure (SOP) which

includes monitoring, savings targets and a specific timeframe action plan by the water conservation team

0 V

There is a movement to encourage water conservation by at least installing a permanent written campaign on every floor, for example:

stickers, posters, e-mails, and so on.

0 V

With the prerequisite rating previously mentioned in the WAC category, the Ciputat HKBP church does not meet these criteria because it does not have procedures related to water handling.

3.1.4. Material Resource & Cycle (MRC)

Material Resource and Cycle is a category that focuses on the use of environmentally friendly materials in buildings, waste processing and others. For MRC there are 3 prerequisite ratings and 5 regular ratings. The prerequisite ratings in this category include the use of fire extinguishing materials with a small Ozone Depleting Potential (ODP) value of <1, priority policies in spending environmentally friendly materials according to the GBCI list, and also a management statement that regulates waste management. In the usual rating for the MRC category, the following points are obtained: 1) MRC 1 Non ODS Usage, 2) MRC 2 Material Purchasing Practice, 3) MRC 3 Waste Management Practice, 4) MRC 4 Hazardous Waste Management, and 5) MRC 5 Management of Used Good. The ratings for this prerequisite rating can be seen in Table 4.

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Table 4. Preliminary Assessment Table for Material Resource and Cycle Category Prerequisites (Mrc)

Code Rating Description Poin

Aktual

Church Management Material Resource and Cycle (MRC) (P = Assessment Prerequisites)

MRC P1 Fundamental Refrigerant

There is use of non-CFC refrigerants and fire extinguishing materials which have a small Ozone Depleting Potential (ODP)

value, <1

0 V

MRC P2 Material Purchasing Policy

There is a church management policy that prioritizes spending all environmentally friendly materials in the list below:

a. Regional production b. SNI / ISO / ecolabel certified c. Materials that can be recycled (recycled)

d. Used Material (reuse) e. Renewable materials (renewable)

f. Certified wood g. Modular or Pre fabricated h. Lights that do not contain mercury i. Insulation that does not contain styrene j. Ceiling or partition that does not contain asbestos k. Composite wood products and agrifibers with low formaldehyde

emission

l. Low VOC emission paint and carpet products

0 V

MRC P3 Waste Management Policy

There is a statement letter containing the commitment of the church management to regulate waste management based on the separation

between:

a. Organic Waste, b. Inorganic Waste, and c. Waste Containing B3

0 V

There is a movement to encourage waste sorting behavior by at least putting up a permanent written campaign on each floor, for

example: stickers, posters, emails, and so on.

0 V

With the prerequisite rating previously mentioned in the MRC category, the Ciputat HKBP church does not meet these criteria because there is no priority policy in spending environmentally friendly materials and there is also no management statement that regulates waste management in the area of the Ciputat HKBP church building.

3.1.5. Indoor Air Health and Comfort (IHC)

Indoor Air Health and Comfort discusses the air quality in the room of a building. In this category there is 1 prerequisite rating with 8 regular ratings, which consist of: 1) IHC 1 Outdoor Air Introduction, 2) IHC 2 Environmental Tobacco Smoke Control, 3) IHC 3 CO2 and CO Monitoring, 4) IHC 4 Physical, Chemical and Biological Pollutants, 5) IHC 5 Thermal Comfort, 6) IHC 6 Visual Comfort, 7) IHC 7 Acoustic Level, and 8) IHC 8 Building User Survey. The ratings for this prerequisite rating can be seen in Table 5.

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Table 5. Tabel Penilaian Awal Prasyarat Kategori Indoor Air Health And Comfort (IHC)

Points

Church Management Indoor Health and Comfort (IHC) (P = Assessment Prerequisites)

IHC P No Smoking Campaign

There is a statement letter that contains a commitment from the church management to encourage the minimization of smoking

activities in the building.

0 V

There is a no-smoking movement that includes the negative impact of smoking on oneself and the environment by at least putting up a permanent written campaign on each floor, for example: stickers,

posters, e-mails, and so on.

0 V

The prerequisite rating required in this category is a commitment letter from the building management to encourage the minimization of smoking activities in the building and a no-smoking campaign in the building environment. With this prerequisite rating, the Ciputat HKBP church does not meet these criteria because it still does not meet the prerequisite rating.

3.1.6. Building Environmental Management (BEM)

This category, Building Environmental Management consists of 1 prerequisite rating and 5 regular ratings. A prerequisite rating required for the BEM is an operation and maintenance plan that supports the target of achieving the GREENSHIP EB ratings. The usual ratings for BEM include: 1) BEM 1 Innovations, 2) BEM 2 Design Intent & Owner's Project Requirement, 3) BEM 3 Green Operational & Maintenance Team, 4) BEM 4 Green Occupancy / Lease, and 5) BEM 5 Operation and Maintenance Training. The ratings for this prerequisite rating can be seen in Table 6.

Table 6. Preliminary Assessment Table For Building Environmental Management Category Prerequisites (BEM)

Points

Church Management Building Environmental Management (BEM) (P = Assessment Prerequisites)

BEM P Operation & Maintenance Policy

There is an operation and maintenance plan that supports the target achievement of GREENSHIP EB assessments, with an emphasis on: mechanical and electrical systems, plumbing systems and water

quality, exterior & interior maintenance, purchasing and waste management

Includes: organizational structure, standard operating procedures and work program training, organizational structure, standard

operating procedures and training, work programs, budgets, periodic reports at least every 3 months

0 V

With the prerequisite rating previously mentioned in the BEM category, the Ciputat HKBP church does not meet these criteria because it still does not have an operation and maintenance plan to achieve GREENSHIP ratings.

3.1.7. Conclusion of GREENSHIP Assessment at the HKBP Ciputat Church

With the analysis that has been done regarding the GREENSHIP assessment at the HKBP Ciputat church, it can be concluded that the Ciputat HKBP Church is still not in the green building category. Then it can be re-analyzed related to what improvements the researcher can propose to the Ciputat HKBP church management to enter the green building category.

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3.2. Optimization of the Ciputat HKBP Church

Based on the results of the initial analysis for each category using the GREENSHIP Rating Tools, it can be concluded that the Ciputat HKBP church has not met the eligibility requirements and the prerequisite rating for each category. The process of analyzing suggestions for optimizing the green building concept at the Ciputat HKBP Church uses the GREENSHIP form and is adjusted to field conditions together with the Ciputat HKBP Church management.

By using GREENSHIP Rating Tools version 1.1 as a benchmark, there are several points that have been fulfilled and which are able to optimize the Ciputat HKBP church to be called a Green Building. This optimization suggestion suggests things that are easy to apply to conventional non-green buildings to become buildings with an environmentally friendly concept so that they are not targeted to fulfill the whole green building concept at once, namely :

3.2.1. Optimization of The Appropriate Site Development Category (ASD)

In this category, the HKBP Ciputat church management is expected to meet the prerequisite assessments required in the GREENSHIP Rating Tools. From the 7 assessment requirements for the Appropriate Site Development (ASD) category and added with the points that have been fulfilled in the Ciputat HKBP Church building, you get a total of 9 points out of a total of 16 points. The ratings for this category can be seen in Table 7.

Table 7. Table of Points for Assessment of The Requirements for Appropriate Site Development Categories (ASD)

Condition

Plan Points

ASD 1 Community Accessibility

1 There are at least 5 types of public facilities within a distance of reaching the main road as far as 500 m from the site (fulfilled)

Available 1

ASD 2 Motor Vehicle Reduction

1 There is a reduction in the use of private motorized vehicles by implementing one of the options: parking rates, reducing reserved parking

with other parties from building management to tenants, and so on.

- 1

2 There is a secure bicycle parking area of 1 parking unit per 30 permanent building users, up to a maximum of 100 bicycle parking units

- 1

ASD 3 Site Landscaping

1 The existence of a landscaping area in the form of vegetation (softscape) which is free from garden buildings (hardscape) which is located above the

ground with an area of at least 30% of the total land area. The plant formation is in accordance with Permen PU No. 5/ PRT/M/2008 regarding

Green Open Space, article 2.3.1 concerning Vegetation Criteria for Yards

- 1

2 Using 60% local plants from local nurseries with a maximum distance of 1000 km

- 1

3 Using productive plants, at least 10% of the landscape area - 1

ASD 4 Heat Island Effect

ASD 5 Storm Water Management

ASD 6 Site Management

ASD 7 Building Neighbourhood

1 There is an increase in the quality of life of the community around the building by taking the following actions: providing a place of worship at

least 1 unit, public toilet at least 5 units (fulfilled)

Available 1

2 Open pedestrian access to at least 2 orientations, namely:

a. Neighbors building (required)

b. Other neighboring buildings and / or secondary roads, Without having to go through the public area (fulfilled)

Available 1

3 Dedicating for the public interest a portion of the land cleared for the construction of private green open spaces

1 (Source: Research Results, 2020)

3.2.2. Optimization of The Energy Efficiency and Conservation Category (EEC)

In this category, the HKBP Ciputat church management is expected to meet the prerequisite assessments required in the GREENSHIP Rating Tools. From the 7 assessment requirements for the Energy Efficiency and

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Conservation (EEC) category and added with the points that have been fulfilled in the Ciputat HKBP Church building, you get a total of 16 points out of a total of 36 points for this category. Assessment for this category can be seen in Table 8.

Table 8. Table of Points for Assessment of Requirements for The Energy Efficiency & Conservation Category (EEC)

Condition

Plan Points EEC 1 Optimized Efficiency Building Energy Performance

1 Preparing the building electricity IKE shows a value below the reference standard IKE in the last 6 months, so every 3% decrease will get 1

additional point

- 9

EEC 2 Testing, Recommisioning or Retrocommisioning

EEC 3 System Energy Performance

1 Using 50% minimum high frequency ballast (electronic) and / or LED in common workspaces

- 1

EEC 4 Energy Monitoring & Control

1 Provision of kWh meter which includes:

a. Air conditioning system b. Lighting systems and contact boxes

c. Other load systems

d. Space that is not excluded or conditioned

- 1

2 Make monthly routine records of monitoring results and data collection on the kWh meter. The recording is carried out for a minimum of the last

6 months

- 1

3 Appreciate the use of energy in the form of Energy Display placed in public areas

- 1

EEC 5 Operation and Maintenance

1 Creating a manual for the operation and maintenance of the entire AC system (chiller, Air Handling Unit, cooling tower).

- 1

2 If point 1 has been fulfilled, then it is added with the manual operation and periodic maintenance of all other equipment systems (transportation systems in buildings, clean and dirty water distribution systems (pumps)

and backup power plants.

- 1

3 There is a monthly report for a minimum of the last 6 months for the operation and maintenance of the building system in an orderly manner according to the format stated in the operation and maintenance manual

- 1

EEC 6 On Site Renewable Energy

EEC 7 Less Energy Emission

3.2.3. Optimization of Water Conservation Categories (WAC)

In this category, the HKBP Ciputat church management is expected to meet the prerequisite assessments required in the GREENSHIP Rating Tools. Of the 8 assessment requirements for the Water Convervation Category (WAC) and added with the points that have been fulfilled in the Ciputat HKBP Church building, you get a total of 17 points from a total of 20 points for this category. Ratings for this category can be seen in Table 9.

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Table 9. Table of Assessment Points for The Requirements for The Water Conversation Category (WAC)

Condition

Plan Points

WAC 1 Water Sub-Metering

1 Create a sub-meter of water consumption in building utilities - 1

WAC 2 Water Monitoring Control

1 Make standard operating procedures and their implementation regarding the maintenance and periodic inspection of the plumbing system to prevent leakage and waste of water by showing the water

balance in the last 6 months for initial certification

- 2

WAC 3 Fresh Water Efficiency

1 For buildings with water consumption of 20% above SNI *, every 10% reduction gets 1 point until it reaches the reference standard (SNI 03-7065-2005 concerning Procedures for Implementing the

Plumbing System) with a maximum of 2 points.

- 1

2 If it meets point 1, then every effort to reduce water consumption by 3% from the reference standard (SNI) will get 1 point.

Maximum Value 6 points

- 3

WAC 4 Water Quality

1 Conduct laboratory tests for 6 months from the primary source of water in accordance with the criteria of clean water at least once in

6 months

- 1

WAC 5 Recycled Water

1 Using recycled water with a sufficient capacity for flushing toilets, in accordance with WHO standards for medium contact (<100

Fecal Coliform / 100 ml).

- 2

2 Creating a recycled water system whose output is equivalent to clean water standards according to Permenkes No. 416 of 1990 concerning Requirements and Monitoring of Water Quality to meet

the needs of clean water.

- 2

WAC 6 Potable Water

1 Using a filtration system that produces drinking water in accordance with Permenkes No. 492 of 2010 concerning Requirements for Drinking Water Quality* at least in every kitchen

or pantry.

- 1

WAC 7 Deep Well Reduction

1 Water consumption using deep well is a maximum of 10% of overall water consumption (fulfilled)

Available 2

WAC 8 Water Tap Efficiency

1 Make 80% of total tap water units in public areas using the auto stop feature

- 2

3.2.4. Optimization of Material Resource & Cycle Categories (MRC)

In this category, the HKBP Ciputat church management is expected to meet the prerequisite assessments required in the GREENSHIP Rating Tools. Of the 5 assessment requirements for the Material Resource & Cycle (MRC) category and added with the points that have been fulfilled in the Ciputat HKBP Church building, you get a total of 7 points out of the total 12 points for this category. Assessment for this category can be seen in Table 10.

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Table 10. Table of Assessment Points for The Requirements of The Material Resource & Cycle Category (MRC)

Condition

Plan Points

MRC 1 Non ODS Usage

MRC 2 Material Purchasing Practice

List of environmentally friendly materials, namely:

a. 80% of regional production based on total expenditures on overall materials

b. 30% SNI / ISO / ecolabel certificate based on the total expenditure of the whole material

c. 5% Material that can be recycled (recycled) based on the total expenditure of the overall material

d. 10% of used materials (reuse) based on the total expenditure of materials

e. 2% Renewable Material (renewable) based on the total expenditure of the entire material

f. 100% Certified wood based on the total expenditure for the entire wood material

g. 30% Modular or Pre fabricated based on the total expenditure of the whole material

h. 2.5% lamps that do not contain mercury from the total lamp unit purchase

i. 100% Insulation that does not contain styrene j. 100% ceiling or partition that does not contain asbestos k. 100% Composite wood products and agrifibers with low

formaldehyde emission

l. 100% Low VOC emission paint and carpet products

-

1 Make a document that explains the expenditure of materials in accordance with the policy in pre-requisite 2 at least 5 of the materials specified in the policy in pre-requisite 2, at least 5 of the

materials specified in the “List of Environmentally Friendly Materials” in the last 6 months for initial certification

- 2

MRC 3 Waste Management Practice

1 Prepare Standard Operating Procedures, Training and Reports to collect and sort waste based on organic and inorganic types in the last

6 months for initial certification

- 1

2 Do some organic and inorganic sorting, carry out organic waste processing independently or in collaboration with official organic

waste processing agencies.

- 1

3 Conducting organic and inorganic sorting, processing inorganic waste independently or in collaboration with official bodies 1 inorganic waste processing which has the 3R principle (Reduce,

Reuse, Recycle)

- 1

4 Making efforts to reduce packaging waste made of Styrofoam and non-food grade plastic.

- 1

MRC 4 Hazardous Waste Management

MRC 5 Management of Used Good

1 Preparing Standard Operating Procedures and reports on the distribution of used goods that can still be reused in the form of furniture, electronics and spare parts through donations or the used

goods market in the last 6 months for initial certification

- 1

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3.2.5. Optimization of Indoor Air Health and Comfort Quality Categories (IHC)

In this category, the HKBP Ciputat church management is expected to meet the prerequisite assessments required in the GREENSHIP Rating Tools. Of the 8 assessment requirements for the Indoor Air Health and Comfort (IHC) category and added with the points that have been fulfilled in the Ciputat HKBP Church building, you get a total of 2 points out of the total 20 points for this category. Assessment for this category can be seen in Table 11.

Table 11. Table of Assessment Points for The Requirements for The Indoor Air Health and Comfort Category (IHC)

Condition

Plan Points

IHC 1 Outdoor Air Introduction

IHC 2 Environmental Tobacco Smoke Control

Smoking is prohibited in all areas of the building and does not provide a special building / area in the building for smoking. If providing a special smoking area outside the building, it must be at least 5 m from the entrance, where the entry of fresh air and window

openings is followed by follow-up monitoring procedures, documentation and a system for responding to smoking prohibitions.

- 2

IHC 3 CO2 and CO Monitoring

IHC 4 Physical, Chemical and Biological Pollutants

IHC 5 Thermal Comfort

IHC 6 Visual Comfort

IHC 7 Acoustic Level

IHC 8 Building User Survey

3.2.6. Optimization of The Building Environmental Management Category (BEM)

In this category, the HKBP Ciputat church management is expected to meet the prerequisite assessments required in the GREENSHIP Rating Tools. Of the 5 requirements for the assessment of the Building Environmental Management (BEM) category and added with the points that have been fulfilled in the Ciputat HKBP Church building, you get a total of 3 points out of a total of 13 points for this category. Assessment for this category can be seen in Table 12.

Table 12. Table of Points for Assessment of Requirements for Category Building Environmental Management (BEM)

Condition

Plan Points

BEM 1 Innovations

BEM 2 Design Intent & Owner's Project Requirement BEM 3 Green Operational & Maintenance Team

1 There is an integrated structure in the operational and maintenance structure of the building which is in charge of maintaining the

application of the sustainability / green building principles

- 1

BEM 4 Green Occupancy/Lease

BEM 5 Operation and Maintenance Training

1 Create a regular schedule every 6 months minimum and a training program in operation and maintenance for site, energy, water, materials and HSES (Health Safety Environmental and Security)

- 1

2 Produce evidence of the implementation of training on operation and maintenance for site, energy, water, materials and the HSES program

along with an evaluation of the training

- 1

3.2.7. Conclusion on Optimizing Assessment of The GREENSHIP Rating Tools

If all the points suggested by the researcher in fulfilling the criteria for each GREENSHIP Rating Tools category above are met, the total score obtained is 54 out of a total score of 117 (46.14%). Or it can be said that it meets the silver rating predicate (Silver). The conclusion of the total optimization value can be seen in Table 13.

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Table 13. Summary of The Total Points for The Green Building Category Code Category Total Poin Max. Percentage Max

(%)

Plan Points

Plan Percentage (%)

ASD 16 13,68% 9 7,69%

EEC 36 30,77% 16 13,67%

WAC 20 17,09% 17 14,53%

MRC 12 10,26% 7 5,98%

IHC 20 17,09% 2 1,71%

BEM 13 11,11% 3 2,56%

Total 117 100% 54 46,14%

3.3. Cost Analysis

Given the additional costs required in this process, including the energy or light system and the plumbing system. So, the additional costs can be described as follows.

3.3.1. Cost Analysis for Appropriate Site Development Categories (ASD)

Provide bicycle parking lots for 12 bicycle parking units. It is estimated that 1 bicycle parking stand with round pipe iron material for 3 bicycle units will cost around Rp. 355,000, -. The type of bicycle parking stand can be seen in the illustration in Figure 1. So the total cost required for 12 bicycle units is:

12 x Rp. 355.000 = Rp. 4.260.000,-

Figure 1. Illustration of A Bicycle Parking

(Source : Journal of Eco Green Campus pada gedung Dekanat Fakultas Peternakan, 2017)

3.3.2. Cost Analysis in the Energy Efficiency and Conservation Category (EEC)

From these data it can be concluded that there are still 19 downlight points that do not use LED lamps.

As shown in Figure 3.Therefore, this type of lamp can be replaced by the use of an LED lamp which is calculated as follows:

Philips 18 watt LED downlight bulb: 19 pieces x Rp. 129.200 = Rp. 2.454.800,-

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Figure 3. Plan for the Electrical Installation of the HKBP Ciputat Church (Source : Project Document, 2017)

3.3.3. Cost Analysis in Material Resource & Cycle Categories (MRC)

Table 14. Quantity of Painting Work

Work Order Volume UoM Unit Price Total Price Inner Wall

Painting 852,91 m² Rp. 30.723 Rp. 26.204.343 Outside Wall

Painting 933,79 m² Rp. 24.523 Rp. 22.899.416

So it can be concluded that the cost needed to replace the paint for the Ciputat HKBP church building is equal to Rp. 49.103.759,-

3.3.4. Conclusion of Cost Requirements

After doing the calculations on the cost requirements to meet the optimization points it can be concluded that the cost of the required amounts :

Rp. 4.260.000 + Rp. 2.454.800 + Rp. 49.103.759 = Rp. 55.818.559,-

4. Conclusions

Based on the research that has been conducted by researchers regarding the fulfillment of the green building concept according to the Green Building Council Indonesia (GBCI) criteria, the following conclusions are obtained.

1. The results of the analysis through the prerequisite Greenship rating tools for each category at the Ciputat HKBP church have not been fulfilled. So that the Ciputat HKBP church cannot be said to be in the green building category.

2. After analyzing the green building category, several points of suggestions for optimization are given in an effort to fulfill the green building category in the Ciputat HKBP church in the future. So that if the points of optimization suggestions are fulfilled, a value of 54 will be obtained from the total value of 117 (46.14%).

Or it can be said that it meets the silver rating predicate (Silver). The details are as follows.

a. Appropriate Site Development (ASD) Category : Plan Points 9 from a maximum total of 16 points. The points that will be carried out are :

1) There are 5 types of public facilities within 500 m distance.

2) Reducing the use of private motorized vehicles

3) Create a bicycle parking area of 12 bicycle parking units 4) Preparing a landscaping area of 771.5 m2

5) Using a minimum of 60% of local plants from plant sellers with a maximum distance of 1,000 km 6) Using productive plants in a landscape area of 77.15 m2

7) Preparing a portion of the open land to be used as a private green open space building

b. Energy Efficiency & Conservation (EEC) Category : Plan Points 16 out of a maximum total of 36 points.

The points to be carried out are :

1) Reducing the reduction in electrical energy in the last 6 months 2) Replace electronic use with a minimum of 50% high frequency ballasts

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3) Provides kWh meter for all energy systems in buildings 4) Perform routine recording of energy usage data 5) Make energy display

6) Creating a manual for the operation and maintenance of all equipment systems (air conditioning, clean and dirty water distribution systems, power plants, and others)

c. Water Conservation (WAC) Category : Plan Points 17 from a maximum total of 20 points. The points that will be taken are :

1) Set up a sub-meter of water consumption

2) Create standard operating and implementation procedures regarding the maintenance and inspection of the plumbing system

3) Save water consumption up to 10%

4) Perform laboratory tests of primary source water 5) Using recycled water for toilet flushing needs

6) Create a recycled water system that is equivalent to clean water standards 7) Using a filtration system for drinking water

8) Makes 80% of total tap water using the auto stop feature

d. Material Resource and Cycle (MRC) category: Plan Points 7 from a maximum total of 12 points. The points that will be carried out are :

1) Prepare Standard Operating Procedures, Training and Reports for collecting and sorting waste 2) Sorting organic and inorganic waste as well as processing organic and organic waste

3) Making efforts to reduce packaging waste made of Styrofoam and non-food grade plastic.

4) Prepare Standard Operating Procedures, Training and B3 waste management reports

5) Preparing Standard Operating Procedures and reports on the distribution of used goods that can still be reused

e. Indoor Health and Comfort (IHC) category: Plan Points 2 from a maximum total of 20 points. The points that will be carried out are :

1) Make a smoking ban in all areas of the building and do not provide a special building / area in the building for smoking.

f. Category Building Environment Management (BEM): Plan Points 3 from a maximum total of 13 points.

The points that will be carried out are :

1) Creating a structure in the operational structure and building maintenance to maintain the application of the principles of sustainability / green building

2) Create a regular schedule every 6 months minimum and a training program in operation and maintenance for site, energy, water, materials and HSES (Health Safety Environmental and Security) 3) Prepare evidence of implementation of training on operation and maintenance

4. In the effort to fulfill the green building concept in existing buildings, it is more focused on operational documents. However, costs are still required in a number of points of optimization suggestions, calculations regarding the cost requirements in implementing the green building concept according to the results of the analysis and points for optimization suggestions at the Ciputat HKBP church are Rp. 55.818.559,-

References

DitJen PPI-KLHK. (2017). Kontribusi Penurunan Emisi GRK Nasional, Menuju NDC 2030.

Ditjenppi.Menlhk.Go.Id. http://ditjenppi.menlhk.go.id/berita-ppi/3150-kontribusi-penurunan-emisi-grk- nasional,-menuju-ndc-2030.html

Firnando, N., Syahrizal, & Rambe, A. P. (2015). Penilaian Kriteria Green Building Pada Bangunan Gedung Rumah Sakit Universitas Sumatera Utara.

Green Building Council Indonesia. (2016). Greenship Rating Tools untuk Gedung terbangun.

Teknika, R. (2017). Ealuasi Kriteria Kelayakan Green Building Pada Gedung akultas Kedokteran Universitas Muhammadiyah Surakarta. Univeritas Muhammadiyah Surakarta.

Biographies

Hamonangan Girsang, born in Simalungun, North Sumatra on February 11, 1968, Lecturer at the Faculty of Engineering, University of Mercubuana and also a Construction practitioner, Obtained a degree in Civil Engineering from Lambung Mangkurat University Banjarmasin in 1994 with the title of his thesis Design Concrete Planning as an alternative to Banjarmasin Sei Lulut Bridge . Then obtained a Masters in Civil Engineering Project Management Concentration from the University of Indonesia in 2016 with the title of a risk-based Quality Management System Evaluation thesis to increase customer satisfaction in maintaining the oil and gas production facilities of PT. XYZ. Then the Engineer professional degree was obtained from the Bandung Institute of Technology in 2020. He also teaches several subjects such as Steel Structure, Statics, Fluid

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& Hydraulics Mechanics and Design Studio. In Construction Practitioners are involved in EPC in planning and project management of Power Plants, Oil & Gas and Mining. He is also active in the professional organization of the Indonesian Engineers Association.

Aldila Septiana Hernasari, born in Ambon, September 30, 1996. She pursued a Bachelor's Degree in Civil Engineering Study Program at Mercu Buana University. He previously studied Diploma 3 in the Civil Engineering Study Program at the Jakarta State University and graduated in 2017. Graduated from Depok 7 Public High School in 2014. During his diploma education, he was active in the student organization, namely the Student Executive Board (BEM) The Faculty of Engineering at the Jakarta State University and several times participated in organizing events such as the National Youth Seminar in 2015. After taking a diploma he worked for one of the building contractors in Jakarta, then in 2019 he started working at PT Astra Honda Motor as a one of the Procurement & Purchasing Control staff.