The Definitive 2018 Guide to BIM Classification Systems - The Definitive... · Although UniClass...

The Definitive 2018 Guide to BIM Classification Systems 2


Why Do We Need BIM Classification?

In terms of project planning and cost estimation, it is crucial for a classification

system to be capable of identifying and accurately describing any model

element.

The elements in a BIM model can be described by a number of parameters,

such as:

• Function

• Location

• Material

• Structure

• Geometry, etc.

These parameters are used by Kreo to define the construction method,

sequence, and cost.

So, the desired classification system should allow Kreo to organise BIM

elements in several different ways at once. Clearly, we need to assign an activity

to each element to compose a work breakdown structure (WBS), which is

followed by Gantt chart generation.

On the other hand, we have to group elements differently for cost estimates and

it goes without saying that there should be an alignment with an actual cost

database.

Introduction

We have a problem in the construction industry.

That problem lies with the lack of a unified classification system. This isn’t news

to anyone and today, with the continued development of Building Information

Modeling (BIM), this problem has become more topical than ever.

Apart from reducing design time and costs, the use of BIM technology is

supposed to improve communication between the people involved. And this lack

of communication is where the real problem lies.

Furthermore, the areas of project planning and cost estimation are still

unexplored. The industry simply has no means for these processes.

Kreo is breaking new ground in this respect.

https://www.kreo.net/https://www.kreo.net/



What Do We Have at Our Disposal Today?

It seems a real issue now and, sooner or later, we will have to produce an

up-to-date classification system which will fully meet the needs of BIM. Or does

it already exist and perhaps we are missing the elephant in the room?

Let’s take a look at the key features of the existing classification systems:

UniClass OmniClass NRM1 UniFormat NRM2 MasterFormat

Country of Origin / Use UK USA UK USA UK USA

Year of Publication 2015 2006 - 2013 2012 2010 2012 2016

Updates Monthly updates No updates - - - Annualy Updates

Definition

A unified classification system

for all sectors of the UK construction

industry.

The equivalent of Uniclass in the U.S. and

Canada. Incorporates MasterFormat and

Uniformat.

A standard for classifying building specifications, cost

estimating and cost analysis in the U.S. and Canada.

A standard for organizing specifications

and other written information for commercial and

institutional building projects in the

U.S. and Canada.

Purpose

Used to annotate objects in a graphic or model. Classification codes can be added to many different things including catalogues

and whole complexes right down to individual products. With classification codes, added items

can be drawn into schedules and drawings with their codes and collected together to

carry out different types of analysis.

Places order of cost estimating and cost planning.

Sets a format for cost estimates

at the schematic design phase.

Places detailed measurement for

bill of quantities and work schedules.

Standardizing the presentation of such information improves

communication among all

parties involved in construction

projects.







Method of arranging

information

Faceted: part-of relationships

Faceted: part-of relationships

Elemental: measurement and description is done by group elements; following the logic

arrangement for elemental cost planning defined in NRM1

Based on functional elements, or

parts of a facility characterized by their functions,

without regard to the materials and methods used to accomplish them

Work sectional: measurement

and description is divided into the

work sections defined in NRM2

“50 Divisions” - a standard

for organizing specifications in the

U.S. and Canada, which arranges

information most appropriately from

the viewpoint of identifying the

“results of work” required to provide

all or part of a facility

Use in KreoBIM element

identification (Ss + Pr combination)

- Elemental breakdown structure - Work breakdown structure -

Definitions

System is a collection of

components that go together to make an element or to

carry out a function. Products are used to construct a system.

For a pitched roof, the rafters,

lining, tiles, ceiling boards, insulation and ceiling finish

comprise a system.

Products are components or assemblies of

components intended for permanent incorporation into construction entities.

Products are the basic building blocks used for construction. A

product may be a single manufactured item, a

manufactured assembly consisting of many

parts or a manufactured operational stand-

alone system.

Group element – the main headings used to describe the facets of an

elemental cost plan. Element – a major part of a group element. A separate

cost target can be established for each element. Sub-element – a part of an

element. As with elements, a separate cost target can be established for each sub-element. Component – a measured

item that forms part of an element or a sub-element. The quantity of one or more items will be measured and the cost estimated to ascertain the cost

target for an element or a sub-element.

Element is a major component,

assembly, or construction

entity part which, in itself or in

combination with other parts, fulfills

a predominating function of the

construction entity. Designed element is an element for which

the work result(s) have been defined.

Bill of quantities (BQ) – a list of items giving

detailed identifying descriptions and firm quantities of

the work comprised in a contract.

Work breakdown structure (WBS)

– in the context of bill of quantities, is used to subdivide a building project into

meaningful elements or work packages.

Work result - a completed entity that exists after all required raw

materials, human or machine effort, and

processes have been provided to achieve a completed condition. Since facility owners ultimately desire a completed entity,

specifiers routinely specify contractual

requirements by work result and minimize

the specifying of details about how to achieve that result

to contractors.







Classification Tables

11 tables in total with

149 Groups

854 Subgroups3856 Sections8219 Objects

15 tables in total with

166 Level 1 Titles2165 Level 2 Titles7952 Level 3 Titles6255 Level 4 Titles2634 Level 5 Titles440 Level 6 Titles

5 Level 7 Titles

15 Group elements62 Elements

180 Sub-elements750 Components

7 Level 1 Titles29 Level 2 Titles


41 tabulated work sections

557 items of work to be measured


1188 Level 3 Titles4964 Level 4 Titles2417 Level 5 Titles

Ss - Systems table:

18 Groups166 Subgroups538 Sections1368 Objects

Table 21 - Elements:



Corresponds with the OmniClass Table 21 - Elements with



Corresponds with the OmniClass Table 22 - Work

Results with

34 Level 1 Titles1236 Level 2 Titles3856 Level 3 Titles1659 Level 4 Titles

Pr - Products table:

15 Groups69 Subgroups513 Sections6370 Objects

Table 23 - Products:


1255 Level 3 Titles2972 Level 4 Titles2174 Level 5 Titles239 Level 6 Titles

5 Level 7 Titles




Quantitative Comparison ChartsQuantitative Comparison Charts




Why Do We Choose UniClass for Kreo?

• Unified approach to classification - simple mapping between classification

tables

• Regular updates and revisions

• Flexibility: over 120 thousand meaningful «System» + «Product»

combinations

• Claims to be a global classification system

Which One Shall We Use?

No doubt, UniClass is the most effective classification system available today, it even claims to be global.

Although UniClass and OmniClass have the same framework (ISO 12006-

2:2015), UniClass has several advantages, such as:

• Unlike OmniClass, UniClass is being constantly revised and updated. As

a result, it remains up-to-date in every sense (up-to-date information,

increasing compatibility with BIM, etc.).

• Redundant and confusing information, such as the Work Results table, is

being removed. This makes it easier to use with BIM.

• UniClass tables have similar terminology, sequencing, grouping and

coding.


BIM ELEMENT IN KREO

NRM2

code

NRM1code

UniclassSystem

Unicl

ass

Prod

uct

Assigned Activity

BoQSs

Pr NRM1

ClassifiedBIM element

Assigned Activity

NRM2

A specific material or component of an element

PurposeBIM element identification

A measured item that forms part of an element or a sub-element

PurposeCost EstimatingElement Breakdown Structure (EBS) composition

An item of work to be measured

PurposeBill of QuantitiesWork Breakdown Structure (WBS) composition

Ss Pr NRM1The collection of components that go together to carry out a function

PurposeBIM element identification

NRM2



How Does It Work in Kreo?

The New Rules of Measurement (NRM) are used for preparing cost estimates and work schedules in the UK. Together with NRM1 and NRM2, the UniClass System + Product combination gives Kreo exhaustive description of any BIM element.

Moreover, NRM are fully compliant with The Building Cost Information Service

(BCIS), the most comprehensive cost database in the UK. Both NRM and BCIS

are developed by the same institution - The Royal Institution of Chartered

Surveyors (RICS).

Instead of Conclusions

Ever since the idea was thought up, it has become clearer and clearer in the

industry that, in practice, BIM is not feasible without a flexible, universally

applicable classification system. Serving the interests of the construction

industry, Kreo suggests a practical solution to the issue.

Still, another question remains unanswered: how can everyone follow the same rules when working with BIM models?

This is a question that is too big for any one eBook to answer, though we will

say that only through collaboration can the potential of BIM models be truly

harnessed.

To learn more about how you can improve your planning processes through

improved team collaboration with Kreo, click the button below to book a

meeting with Kreo’s founder, Magomed Galaev.

BOOK TIME WITH MAGOMED

https://www.kreo.net/https://www.kreo.net/http://meetings.hubspot.com/mgalaevhttp://meetings.hubspot.com/mgalaev


About Kreo

Kreo is an advanced BIM design collaboration and BIM construction solution.

It harnesses the power of Artificial Intelligence to transform the construction

project collaboration, quantity take-off, cost estimating, scheduling and bidding

processes.

It brings together all your BIM construction planning resources in a single,

cloud-based integrated platform that reduces friction, improves the

collaboration and productivity of your team. This gives all your stakeholders

a powerful tool to improve the quality of project planning and reduce bidding

costs.

For more information on how Kreo can help with your next project, visit the

website — kreo.net.

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