Verification of Design

7/28/2019 Verification of Design

http://slidepdf.com/reader/full/verification-of-design 1/7

Verification of Design

Design quality verification is performed by Design Certified Verifiers.

The goal is to ensure meeting the minimum required level of quality, as stipulated in the Law,

by correctly considering the provision of the codes and regulations.

The Design verifier consultants are certified by Romanian Ministry of Development.

Law 10/1995 regarding construction quality identifies 6 Essential Requirements for

construction activity.COUNCIL DIRECTIVE of 21 December 1988 on the approximation of laws,

regulations and administrative provisions of the Member States relating to construction products

(89/106/EEC) – THE SAME 6 Essential Requirements.

A. Mechanical resistance and stability

The construction works must be designed and built in such a way that the loadings that are liable to act

on them during their construction and use stages will not lead to any of the following:

(a) collapse of the whole or part of the work;

(b) major deformation to an inadmissible degree;

(c) damage to other parts of the construction works or to fittings or installed equipment as a

result of major deformation of the load-bearing construction;

(d) damage by an event to an extent disproportionate to the original cause.



B. Safety in case of fire

The construction works must be designed and built in such a way that in the event of an outbreak of fire:

(a) the load-bearing capacity of the construction can be assumed for a specific period of time;

(b) the generation and spread of fire and smoke within the construction works are limited;

(c) the spread of fire to neighboring construction works is limited;

(d) occupants can leave the construction works or be rescued by other means;

(e) the safety of rescue teams is taken into consideration.

C. Hygiene, health and the environment

The construction works must be designed and built in such a way that they will, throughout their life

cycle, not be a threat to the hygiene or health and safety of workers, occupants or neighbors, nor have

an exceedingly high impact on the environment quality or on the climate during their construction, use

and demolition, in particular as a result of any of the following:

(a) the giving-off of toxic gas;

(b) the emissions of dangerous substances, volatile organic compounds, greenhouse gases or

dangerous particles into indoor or outdoor air;(c) the emission of dangerous radiation;

(d) the release of dangerous substances into ground water, marine waters, surface waters or soil;

(e) the release of dangerous substances into drinking water or substances which have an otherwise

negative impact on drinking water;

(f) faulty discharge of waste water, emission of flue gases or faulty disposal of solid or liquid waste;

(g) dampness in parts of the construction works or on surfaces within the construction works.

D. Safety (and accessibility) in use

The construction works must be designed and built in such a way that they do not present unacceptable

risks of accidents or damage in service or in operation such as slipping, falling, collision, burns,

electrocution, injury from explosion and burglaries.In particular, construction works must be designed and built taking into consideration accessibility and

use for disabled persons.

E. Protection against noise

The construction works must be designed and built in such a way that noise perceived by the occupants

or people nearby is kept to a level that will not threaten their health and will allow them to sleep, rest

and work in satisfactory conditions.

F. Energy economy and heat retention

The construction works and their heating, cooling, lighting and ventilation installations must be designed

and built in such a way that the amount of energy they require in use shall be low, when account is

taken of the occupants and of the climatic conditions of the location.

Construction works must also be energy-efficient, using as little energy as possible during their

construction and dismantling



The extend of Verification of Design (number of Essential requirements to be considered) depends on

the Construction Category of importance.

Design

Section

Category of importance

ESSENTIAL REQUIREMENT

To be reviewed

A B C D E F

Building

Exceptional (A) ● ● ● ● ● ●

Special (B) ● ● ● ● ● ●

Normal (C) ● ○ ○ ○ ○ ○

Low (D) ● ○ ○ ○ ○ ○

Services

Exceptional (A) ● ● ● ● ● ●

Special (B) ● ● ● ● ● ●

Normal (C) ● ○ ○ ○ ○ ○

Low (D) ● ○ ○ ○ ○ ○

The Designer should specify correctly what Essential requirements will be reviewed so that the Client

may approach the proper Consultants (Verifiers). If not, they are subject to fines and other legal

consequences.

Verification of design in order to check the compliance of the design documents with EssentialRequirement A – Mechanical resistance and stability (MRS) is compulsory in any cases provided by the

Law.

Verification of design is compulsory for each of the 6 Essential requirements in the following situations:

- Dwelling buildings having more than 1 Floor (> P+1E);

-School facilities, Hoapitals and related, Turism facilities hosting many people;

- Industrial facilities – with possible negative impact on surroundings and environment.



SPECIAL PROVISIONS

Soil Reports and Special foundation solutions/conditions (PSU, PUCM, Special foundations -

should be verified to Af – Foundation/Soil MRS (Normativ privind documentatiile geotehnice pentru

constructii indicativ NP 074 din 2007 ) ;

Design of projects with impact on environment - should be verified to D - "Hygiene, health and

environment” (Art. 7, pct. 21 din Legea 50/1991, cu completari si modificari ulterioare, privind

autorizarea lucrarilor de constructii);

Design of projects regarding thermic rehabilitation - should be verified to E - «Energy

economy” (Art. 7, pct. 23 din Legea 50/1991, cu completari si modificari ulterioare, privind autorizarea

lucrarilor de constructii);

VERIFICATION OF DESIGN – CHECK LISTS

(Design Performance Requirements)

E.R. “B” – Safety in use : Minimal Check list

Designdocumentsreviewed

Performance requirements (aspects to bereviewed)

Structure and Architecture design

1. Provisions to avoid sliding and falling ......;2. Prevent accidents from falling on stairs, ramps,

oscillation of levels;3. Separation of trafic (people and vehicles);4. Propper gauges (gabarit) for people and vehicles,

inclouding people whith special needs (disabilities);5. Lightning (natural and artificial/ interior and

exterior);6. Protection measures against burglary;7. Protection measures against protuberant elements;8. Protection measures against burning due to hot

surfaces, steem, hot or corrosive liquides,explosions;

9. Protection measures against electric accidets;10. Avoid structural or architectural elements

obstructing circulation of people whith specialneeds (disabilities);

11. Completness of written documents and drowings;12. Monitoring, maintenance and operation instructions;



E.R. “C” – Safety in case of fire : Minimal Check list

Design documentsreviewed

Performance requirements (aspects to be reviewed)


1. Fire protection from vicinities;2. Define the fire category of the technological processes;3. Define: Building fire degree resistence and behavior;4. Limitation of fire emision within the building and its

facades; Smoke evacuation;5. Provision of evacuation routes and their protection in case

of fire;6. Equipe the building with specialised devices against fire;7. Acees routes (interior and exterior) to facilitate rescue

intervention in case of fire;8. Management plan in case of fire;9. Completness of documentation;10. Other provisions.

E.R. “D” –Hygiene and health, Environment: Minimal Check list Design documents

reviewedPerformance requirements (aspects to be reviewed)


1. Protection against external emissions;2. Ensure air quality – depending of room

destination, type of occupants, type of activities,ventilation systems, etc;

3. Consider finishing works without volatile

emissions;4. Provision of facilities to ensure a proper maintenance and hygiene;

5. Wastewater disposal without infestingenvironment or people;

6. Household waste disposal without infestingenvironment or people;

7. Prevent environment polution due to activitiesperformed inside construction facility;

8. Proper lightening;

9. Completness of written documents and drawings;10. Other.



Design documents subject to Verification:

• Soil Report – according to the provisions of NP 074 Code;

• Technical documentation for obtaining the Construction permit (D.T.A.C.)

- drawings, technical reports;

• Technical documentation needed to execute the construction works

(P.Th.) and Details (D.D.E.) - drawings, calculation, specifications.

Design changes during construction stage (As built changes/modifications).

E.R “E” – Heat retention, Waterproof insulation and Energy economy:

Minimal Check list




1. Climate conditions;2. Interior confort according to occupants and their

activities;

3. Minimise functioning cost (heating, cooling)considering the anvelope performance;

4. Avoid water vapor condensation;5. Avoid water lickeage through anvelope and

construction subsystems;6. Avoid water infiltration from soil;7. Completness of written documents and drawings;8. Others.

E.R. “F” – Protection against noise: Minimal Check list



Structure and

Architecture design

1. Conformance to environment requirements;2. Provisions to reduce exterior noise level on the

building users;3. Provisions to reduce exterior exterior impact

noise;4. Provisions to reduce interior noise spreading,

affecting users’ confort;5. Completness of written documents and drawings;6. Others.



Design Certified Verifiers

• Verifier should verfy designs according to his/her certification (Domain and

Essential Requirement).

• The correlation between different parts of the design is not required to

Verifier, excepting Resistance and Stability Requirement (“A”), where: - consider Architecture plans in terms of loads evaluation for non-

structural elements;

- consider the loads provided by service engineers, influencing loads

evaluation and calculation for the structure.

• Verifier should sign and stamp only design documentation that are

developed according to technical regulations in force.

• Verifier is forbidden to sign and stamp design work provided by himself or

with contribution.

• He/She may sign and stamp design work provided by the company wherehe works, but he/she didn’t participate.

• Design verification is witnessed by:

- Technical Review – signed and stamped;

- Sign and stamp Calculation Notes;

- Sign and stamp – Drawings and Technical Reports.

• In case of conflicts between Designer and Verifier – the final decicion

holds on the Technical Expert Witness (appointed by the Client).

Verifiers of design Certification

• Verifiers of design are certified by Ministry of Development;

• Specialists that might be certified are: Construction engineers, Building

services engineers, Architects, Geological engineers, Oil and Gas engineers

– according to their speciality;

• Architects are not entitled to be certified for «A» Essential Requirement –

Resistance and Stability;

• Geological engineers may be certified only for «Af» Essential Requirement;• Engineers/Architects should have relevant competence and experience: -

minimum 8 years as designer after graduation;

• - minimum 4 years as designer and other 8 years as inspector in a state

control agency;

Documents

Verification of Design