What is Modular Coordination

7/25/2019 What is Modular Coordination

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What is Modular Coordination?

Modular coordination is a concept of coordination of dimension and space, in

which buildings and components are dimensioned and positioned in a term of abasic unit or module, known as 1M which is equivalent to 100 mm.

It is internationally accepted by the International Organization for Standardization

(ISO) and many other countries.

The introduction of modular coordination in building will constitute a positive stepto streamline the industry towards proper metrication in building planning, design,

construction, assembly and manufacturing of building materials and components.

Thus, the modular coordination can facilitate the achievement of greater

productivity in the building industry by virtue of its ability to discipline the

dimensional and spatial coordination of a building and its components.

Moreover, modular coordination allows a more flexible open industrial system to

take shape.

The principal objective of implementing Modular Coordination is to improve

productivity in the building industry through industrialization.

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Benefits of Implementing Modular Coordination

The benefits of practicing modular coordination is to provide a practical approach

towards the following:

Facilitates cooperation between building designers, manufacturers,

distributors, contractors and authorities.

In the design work, enables buildings to be so dimensioned that they can be

erected with standard components without undue restriction on freedom of

design.

Permits a flexible type of standardization, which encourages the use of alimited number of standardized building components for the construction of

different types of buildings.

Optimizes the number of standard sizes of building components.

Encourages as far as possible the interchangeability of components, in whatever

materials, forms or methods of manufacture.

With the introduction of Modular Coordination in building, the concept will

provide a positive step to streamline the industry towards proper metrication in

building planning, design, construction, manufacturing and assembly of building

materials and components.



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Modular (Electrical) Wiring

A preassembled electrical cabling system, using pre-terminated electrical

cables usually made up into looms or wiring harnesses to provide the electricaldistribution system for all mains small power, lighting and appliances.

Multi-Purpose Riser

Multiple service vertical distribution module, constructed from primed or

galvanized mild steel and incorporating appropriate building services which

may or may not be insulated.These modules can be connected offsite, but are often transported in 7.5m

lengths to avoid transportation problems.

The majority of the electrical risers are manufactured using a mesh or ladder

system to allow easy distribution at floor levels in various directions.

While the base structure may offer a level of standardization the dimensions

and carrying capacity will vary from between projects.

Terms:

Simplifies site operations by rationalizing setting out, positioning and

assembly of building components.

Ensures dimensional coordination between installation (equipment, storageunits, other fitted furniture, etc.) as well as with the rest of the building.



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Beam and Block Floor

Extruded or wet cast prestressed

beams between 150 and 225mm

deep, spaced to suit the appliedloading and spans, together with

blocks of various types.

These may be purpose-made blocks with

rebates to suit the shape of the beams (tray

blocks).

Also commonly used are speciallyshaped extruded or expanded

polystyrene blocks which provide a

high degree of insulation for ground

floors.

Component

A term used loosely for items that are

manufactured offsite and then assembled

together with other components.

If this is completed offsite then the product is

defined as a whole.

Careful design of components

and their interfaces is crucial for

effective manufacture and

assembly.



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Panel Bui lding System

Comprising walls, floors and roofs in the form of flat pre-engineered panels

that are erected onsite to form the box-like elements of the structure that then

require various levels of finishing.This term applies to all different material types.

Pre-cast Flat Panel System

Floor and wall units are produced offsite in a factory and erected onsite, ideal

for all repetitive cellular projects.

Panels can include services, windows, doors and finishes.

Building envelope panels with factory fitted insulation and decorative cladding

can also be used as load-bearing elements.

Plant Room Module

(preassembled)

Packaged or skid-mountedpreassembled plant rooms prefinished

in the factory, ready for

direct connection to mains services

Onsite (AHUs, fans,

chillers, boilers, pumps together with

elements of the building envelope.



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MODULAR COORDINATION

A module can be defined as a basic dimension which could for example form thebasis of a planning grid in terms of multiples and submultiples of the standard

module.

TYPICAL MODULAR COORDINATED PLANNING GRID:

Let M = the standard module

GRID



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Structural Grid

used to locate structural components such as beams and columns.

Planning Grid -

based on any convenient modular multiple for regulating space requirements such

as rooms.

Controlling Grid

based on any convenient modular multiple for location of internal walls, partitions

dc.

Basic Module Grid

used for detail location of components and fittings.

All the above grids, being based on a basic module, are contained one within the

other and are therefore interrelated.

These grids can be used in both the horizontal and vertical planes thus forming a

three dimensional grid system. If a first preference numerical value is given to M dimensional coordination is

established.

DIMENSIONAL COORDINATION

The practical aims of this concept are to :-

1. Size components so as to avoid the wasteful process of cutting and fitting on

site



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2. Obtain maximum economy in the production of components.

3. Reduce the need for the manufacture of special sizes.

4. Increase the effective choice of components by the promotion of

interchangeability.

BS 6570 specifics the increments of size for coordinating dimensions of building

components thus :-

Preference 1st 2nd 3rd 4th

Size (mm) 300 100 50 25

the 3rd and 4th preference having a maximum of 300mm

Dimensional Grids - the modular grid network defines the space into which

dimensionally coordinated components must fit. An important factor is that the

component must always be undersized to allow for the joint which is sized by the

obtainable degree of tolerance and site assembly :-



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CONTROLLING LINES, ZONES AND CONTROLLING DIMENSIONS

These terms can be defined by example



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Modular Brick Masonry

MODULAR UNIT DIMENSIONS

The listed dimensions of modular masonry units are "nominal'', and are equal to

the manufactured or specified dimension plus the thickness of the mortar joint

with which the unit is designed to be laid.

For example, the

manufactured length of a

unit whose nominal length

is 12 in. would be 11 1/2

in. if the unit weredesigned to be laid with

1/2 in. joints, or 11 5/8 in.

for 3/8 - in. joints.



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GRID LOCATIONS OF MASONRY WALLS

Grid locations of mortar joints in walls constructed with various modular units

when the walls are centered between grid lines.

It can be seen that all grid lines coincide with horizontal mortar joints for only

the 2 - in. and 4 - in. nominal heights, thus providing 4 - in. flexibility.

A symmetrical grid location for walls is usually preferred to an unsymmetrical

position.

The fact that alternate grid lines coincide with the mortar joints provides a

simple rule for determining the location of a grid line with respect to the

masonry at any point above or below a given reference grid line.

Any grid line which is an even

multiple of 4 - in. from the reference

line will have the same relative

position with respect to the masonry

coursing.

This simple rule greatly simplifies

the checking of course heights,

particularly for lintels, where it is

usually essential that the head of the

opening coincide with a horizontal

mortar joint.



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In the construction industry, it was felt that typical dimensions must be easy to

use in mental arithmetic.

Therefore, rather than using elements of a geometric series, a different system

of preferred dimensions has evolved in this area, known as "modular

coordination".

Major dimensions (e.g., grid lines on plans, distances between wall centers orsurfaces, widths of shelves and kitchen components) are multiples of 100 mm,

i.e. one decimetre.

This size is called the "basic module" and represented by the letter M.

For larger dimensions, preference is given to multiples of the modules 12 M (=1.2 m), 15 M (= 1.5 m), 30 M (= 3 m), and 60 M (= 6 m). For smaller

dimensions, the submodular increments 50 mm or 25 mm are used.

Dimensions chosen this way can easily be divided by a large number of

factors without ending up with millimetre fractions.

Dimensions in modular coordination

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