service life planning of building components the brazilian experience
DESCRIPTION
Service Life Planning of Building Components the Brazilian ExperienceTRANSCRIPT
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Service life planning of building components: the brazilian experience
Vera Fernandes Hachich Scia gerente
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Themes of the lecture
How to establish minimum criteria to SERVICE LIFE PREDICTION AND ASSESSMENT OF DURABILITY of building products
The Brazilian Building Performance Standard
Long-term performance evaluation of technological innovation the Brazilian experience
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Palace building
Non conformity X short service life
Failure of pipes
Early replacement
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PIPES FAILURE OF
WATERTIGHNESS
4 MANDATORY replacement = costs, impacts, loss
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http://www.cidades.gov.br/pbqp-h/
SiMaC - PBQP-H SiNAT - PBQP-H
Technical
Assessments
Quality Assurance
Programs
What are we doing?
PBQP-H Brazilian
Quality and Productivity Program for
Habitat
INNOVATIVE
PRODUCTS NO BRAZILIAN
STANDARDS
STANDARDIZED
PRODUCTS AND
BUILDING
SYSTEMS
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90
92
94
96
98
100
102
104P
erf
orm
ance
Time
minimum acceptable
average service life
Nonconformity
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0 40 80 120 160 200 240
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Coeficiente de perda de carga K
Mar
ca
2000
Loss of pressure of valves
Comparison of results from 14 products since the beginning of PSQ
0 40 80 120 160 200 240
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Coeficiente de perda de carga K
Mar
ca
2014
standard K
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Lab Study Objective: To assess toilet bowl performance in different conditions and propose adequate testing methods;
Field Study Objective: To assess the behavior of low volume bowls under real usage conditions:
Test qualification main critical properties of performance criteria
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Dual Flush
PSQ Toilets - Low Volume Flush Study 2000 and 2014
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LOCKERS - Simulation of use
Salt spray test
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Simulation of use
Handling simulation
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PRODUCTS, PERFORMANCE AND MATERIALS
Site conditions can be differents
Instalallation conditions are differents
SAME PRODUCT, diferent performance:
PRODUCT PERFORMANCE AS A STANDARD COMPLIANCE
low pressure
User Confort vazo mnima necessria para o uso
High pressure
Probability of loss of water
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Simulation of use
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29% 36%
87% 88% 94% 89% 89%
71% 64%
13% 12% 6% 11% 11%
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Re
sult
ado
s d
e a
pro
va
o
Referncia Reprovados AprovadosIncio das avaliaes
Comparao:
Sector Evolution
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15
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Estimated period of time for which a system is designed to meet the performance requirements set out by a standard, considering the requirements of the applicable standards, the stage of knowledge at the time of the project, and assuming compliance with the periodicity and correct work of maintenance processes specified in its Manual of use, operation and maintenance.
The design service life (VUP) must not be confused as the actual service life, durability, certified or legal warranty.
Note: The VUP is a theoretical estimate of service life. The VU may or may not be realized due to efficiency and maintenance, registration of changes in the work environment, climatic factors etc.
Cost of maintenance and replacement over the useful life Category
Design service life (VUP)
Design service life (VUP) System VUP minimal (years)
Structure 50*
Internal floors 13
External envelope (vertical) 40
Internal partition walls 20
Roofing 20
Water and sanitation system 20
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17
DRYWALL: Conformity of components
Drywall
Components
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18
DRYWALL performance of the system FIRE SECURITY - RESISTANCE AND REACTION
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DRYWALL SECURITY; ACOUSTIC PERFORMANCE
70mm
95mm
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DESIGN SERVICE LIFE - VUP = 8 years approved products according to Brazilian standards. MANUFACTURER ASSUMES VUP, respecting ways of maintenance, installation and operation
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What are we doing?
TECHNICAL EVALUATION
OF INNOVATIVE
PRODUCTS
PBQP-H Brazilian Quality and
Productivity Program for Habitat
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INNOVATIVE PRODUCT INNOVATIVE BUILDING SYSTEM INNOVATIVE BUILDING SUBSYSTEM
THERE ISNT A BRAZILIAN STANDARD
SINAT National System of Technical Assessments
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SINAT - DEVELOPMENT ACTIVITIES
PERFORMANCE STANDARDS FOR RESIDENTIAL BUILDINGS NBR 15575 - Edifcios habitacionais
Establishes minimum performance requirements of systems for residential buildings (structure, roof, floor, walls, etc.);
Requirements non dependent of materials and building system.
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System with national coverage;
Technical assessment of innovative products and systems;
Reduction of hazards caused by ignorance of the real performance and durability of these products.
Recycled roof tile - Tetrapak ~ 2 years
SINAT - DEVELOPMENT ACTIVITIES
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Conformity assessment in relation to performance standards, Fire Departments, Buildings codes, international standards and other requirements defined for the ITA.
Procedure for evaluating products or systems TECHNICAL EVALUATION
The innovative product or system must be subjected to technical evaluation
SINAT - DEVELOPMENT ACTIVITIES
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Telha Reciclada aps ~2 anos
Customer
ITA
Study and draw up Guideline SINAT
Draw up Technical Evaluation Report
Conducts Audits of Quality
Prepare the DATEC
Appreciation of Guideline SINAT by CT- SINAT
PUBLISHED of Guideline SINAT
Conducts periodic control (validity of the Datec)
Appreciation of DATEC by CT- SINAT
Concession of the official approvall DATEC by CN-SINAT
PUBLISHED DATEC
referendum about the Guideline SINAT by CN- SINAT
STEPS
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MINISTRIO DAS CIDADES - Secretaria Nacional da Habitao
Programa Brasileiro da Qualidade e Produtividade do Habitat (PBQP-H)
Sistema Nacional de Avaliaes Tcnicas (SINAT)
Diretrizes para Avaliao Tcnica de Produtos
DIRETRIZ SINAT
N 004
Sistemas construtivos formados por paredes
estruturais constitudas de painis de PVC
preenchidos com concreto
(Sistemas de paredes com formas de PVC incorporada)
Braslia, julho 2010
Tabela 1 - Requisitos para caracterizao dos materiais e componentes que formam os sistemas construtivos objetos desta Diretriz
Item Requisitos Indicador de conformidade
A Painis de PVC rgido
A.1 Espessura mnima dos
perfis 1,7mm
A.2 Cor dos perfis Conforme especificao de projeto, com () 0,6
A.3
Resistncia do PVC aos raios ultravioleta
(exposio de placas de PVC em cmara de CUV-
UVB)
2000 horas de exposio em cmara de CUV, com lmpada de UVB
A.4 Mdulo de elasticidade na flexo (antes e aps CUV)
Raps envelhecimento 0,70 Rinicial
A.5
Resistncia ao impacto: realizar ensaio de impacto
Charpy ou ensaio de impacto na trao (antes e aps exposio em cmara
de CUV)
Raps envelhecimento 0,70 Rinicial
A.6 Aspecto visual aps ensaio
de envelhecimento acelerado
As duas faces do corpo de prova devem ser avaliadas:
Sem bolhas, sem fissuras, ou escamaes, aps exposio de 2000 horas em cmara de CUV, com avaliao a 500h, 1000h, 1500h e 2000h
SINAT GENERATION OF PUBLIC DOCUMENTS
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EXAMPLES OF PUBLIC DOCUMENTS
INNOVATIVE FAADES PVC TILES
LONG TERM PERFORMANCE
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Difficulties of durability evaluation
Changing degradation factors geographically and over time
Difficulties for the choice of factors and their intensities
Necessity to reduce the number of tests and testing time
Validation of the relationship between results and reality
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Tests qualification main critical properties of long
term performance;
Conduction of exploratory tests and technical
discussions;
Natural Weathering and comparison of types of
degradation mechanisms
Monitoring and tracking performance in real conditions
Main steps
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Structural performance, safety during handling and operation
Assembly and maintenance load
Weight of the structure and components
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WATERTIGHNESS; SECURITY
Requisitos Exigncia
ESTANQUEIDADE GUA
No ocorrncia de escorrimento, gotejamento de gua ou gotas aderentes
Segurana no uso e na operao - POSSIBILIDADE DE CAMINHAMENTO DE PESSOAS SOBRE O TELHADO
Suportar carga vertical concentrada mnima de 1,2kN nas posies indicadas em projeto sem apresentar ruptura, fissuras, deslizamentos ou outras falhas.
Regies Condies de ensaio
Presso esttica Pa
Vazo de gua L / m2 / min
I 10
4 II 20 III 30 IV 40 V 50
Carga de
1,2kN
Ensaio em
laboratrio
Solicitao real
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Requisitos Exigncia
DESEMPENHO ESTRUTURAL
Resistncia ao do vento
Clculo das cargas de vento - NBR 6123:1988 - Foras devidas ao vento em edificaes
No ocorrncia de remoo ou danos no telhado sujeitos a esforos de suco. Deformao mxima admissvel residual L/250 Deformao mxima admissvel instantnea 2 x L/250
Ao de granizo e outras cargas acidentais em telhados
No ocorrncias de ruptura ou traspassamento 1J
Regio
do Brasil
Presso de ensaio (Pa)
Altura do solo: 5m Altura do solo: 15m
I 500 850
II 750 1100
III 950 1500
IV 1200 1900
V 1500 2300
Esfera: 65g
Dimetro 25mm
Aplicar um impacto na posio mais desfavorvel por meio de esfera de ao abandonada em queda livre (1,5m).
Energia de impacto: 1J
WIND PRESSURE; SECURITY
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Action of heat and thermal shock
10 cycles of heat and cooling with water spray
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PVC TILES
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Proposed text: revision of the standard NBR 15575: The outer surface of the covering system should provide flame propagation coefficient 75. For kitchen environment, flame propagation coefficient should be 25.
For joints forming materials, when installed, the assessment of outer surface could be:
European method of roof for outer
surface in real conditions 15:
ENV 1187 - Test methods for
external fire exposure to roofs
FIRE PROTECTION
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PVC TILES FIELD EXPERIENCE
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Teresina
Palmas
Piracicaba
Macei
Piracicaba Weather Station - ESALQ/USP Teresina
Palmas
Macei Building at seaside (strong wind action)
SELECTED LOCATIONS
EXPOSITION OF PROTOTYPES ROOFS
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PALMAS: replacement of metal
tiles for PVC tiles
ESALQ structures manufacture
PVC TILES
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Natural Weathering stations Rio Grande
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20/4/2005 Vera Fernandes-Hachich and Vahan
Agopyan 41
Unplasticized PVC window frames accelerated weathering of PVC specimens X natural
weathering Rate of strength decrease
MBC10 - Reduo relativa de
resistncia
Exposio acelerada
0,0
0,5
1,0
1,5
0 1000 2000 3000
Tempo (h)
RI(
t)/R
I(0)
MBC10 - Reduo relativa de
resistncia
Exposio natural
0,0
0,5
1,0
1,5
0 1 2 3 4 5
Tempo (anos)
RI(
t)/R
I(0)
y = -0,0002x + 0,9827
R2 = 0,8653
0,0
0,5
1,0
1,5
0 1000 2000 3000
y = -0,1385x + 0,9217
R2 = 0,8956
0,0
0,5
1,0
1,5
0 1 2 3 4 5
DR/Ro = 13,85% / year DR/Ro = 20% / 1000 h
In the examples above:
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Maximum fee of impact resistance decrease: criteria
Reducing the
consumer risk, i.e, the
risk of accept an
inapropriated
formulation (consumer
risk = 1,9%), without
excessively increasing
the risk of the producer
(2,2%), ie, a good
formulation be
rejected, one arrives at
a rate of strenght
decrease of
7% per year 0,0%
5,0%
10,0%
15,0%
20,0%
25,0%
30,0%
4% 6% 8% 10% 12%
Valor limite da taxa de
decrscimo de resistncia
Prob
abili
dade Prob. de rejeitar
compostoadequado
Prob. de aceitarcompostoinadequado
0
0,5
1
1,5
2
2,5
3
2% 6% 10% 14% Mais
Distribuio de taxas de decrscimo de
resistncia - Exposio natural
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Accelerated weathering 1000 hours are enough?
2000 h
0,0
0,5
1,0
1,5
0 1000 2000 3000
RI
(t
)/R
I(
0)
Time (hs)
MBC10 - Relative strenght
decrease
- accelerated weathering
0,0
0,5
1,0
1,5
0 1000 2000 3000
RI(t)/R
I(0
)
Time (hs)
MBC10 - Relative strenght
decrease - accelerated
weathering
1000 h
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1000 h 2000 h 2000 h r2=0,78
SATISFACTORY
1000 hours vs. 2000 hours
R = 0,3125
0%5%
10%15%20%25%30%35%
0% 5% 10% 15%
AC
CE
LE
RA
TE
D(1
000X
%h)
Natural (%/year)
Rate of strenght decrease DRI/RI(0),
of different formulations
(acceletated test until 1000 h)
MBC10 ABC10
CPP10 CPC10 ACC10
ACB10 Linear ()
R = 0,7803
0%
5%
10%
15%
20%
25%
30%
0% 5% 10% 15%
AC
CELER
ATED
(100
0 x
%/h
)
Natural (%/year)
Rate of strenght resistance, DRI/RI(0), of different formulations
(acceletated test until 2000 h)
MBC10 ABC10
CPP10 CPC10 ACC10
ACB10 Linear ()
1000 h r2=0,31
INSATISFACTORY
ACCEPTABLE?
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Rate of strenght decrease
DRI/RI(0), of several formulations
(accelerated weathering test until 2000 h)
R 2 = 0,7803
0%
5%
10%
15%
20%
25%
30%
0% 5% 10% 15%
Natural (%/year)
Acc
ele
rate
d (
1000 x
%/h
)
MBC10
ABC10
CPP10
CPC10
ACC10
ACB10
Linear
Criteria DR/Ro < 0,015% / h on QUV
Accelerated:
15% / 1000 h
0,015% / h
Measures at 0, 500, 1000 e 2000 h
Natural: 7% per year
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46
Degradation of PE reservoirs exposed to the weather
- accelerated exposure = 18000h WOM.
- natural exposure = 10 years
Technical experiments
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47
Technical experiments
Reservoirs's deformation
Laboratory tests:
- Short duration test (72h);
- Test chamber: 50C;
- Detect the possible deformations and loss of watertight;
- Distinguish products that present different deformations behavior.
Field Study:
- Exposure of reservoirs by 130 days to weather (in SP);
-Determination of reservoirss deformation
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Lifetime of Plastic Pipes
environment
load
material
Lifetime = f
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Environmental Factor Chlorine
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Testing Techniques
Hydrostatic Pressure Testing
Notch Pipe Testing (SCG-test)
Rapid Crack Propagation Testing (Up to 250 mm)
Circulation Loop Testing Water
Circulation Loop Testing Chlorinated water
N 2 PIP
E
Bath
or
oven
at
0-
160C Float valve
Float
Time registration
P
N 2
H 2 O
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Evaluating the Results
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Development of PE Pipe Materials
Discovery of low pressure polymerization by Dr. Karl Ziegler
Mid 1950s, First generation PE 50 and PE 63
1980s, Second generation Unimodal PE 80
[MPa]
[h]
1st Generation
20C
60C
80C
[MPa]
[h]
2nd Generation
20C
60C
80C
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STRESS REGRESSION LINE (PE) Transition of failure mechanism
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STRESS REGRESSION LINE (PE)
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STRESS REGRESSION LINE PVC PIPES
EUA (HDB) = 100.000 h = 11,4 anos Europa (MRS) = 50 anos = 438.000 h
HDB = Hydrostatic Design Basis MRS = Minimum Required Strenght
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STRESS REGRESSION LINE(PP)
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LAB FAILURES AND NOT
PR
ES
SU
RE
FAILURE TIME
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.NOT FIELD FAILURES!
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THANK YOU,
FOR YOUR ATTENTION!