specification in architecture-1

SPECIFICATION IN ARCHITECTURE

What is “SPECIFICATION IN ARCHITECTURE”?

The term ‘Specification in Architecture’ describes the specification of building materials, products, services and cost of it. The specification is also term as a Technical Document. The word ‘Specification’ derived from the Latin and the Old French word ‘Specifier’ which means ‘to describe’. It is a set of required documents having detailed content about materials, products, designs and services. The role of Specification in Architecture or Construction of a building is to define the structure both physically and technically.

So in this post, we will discuss the objectives, importance, uses & types of it. We will also discuss its advantages and disadvantages, important aspects & design and principles of Specification Writing, etc.

Objectives of Specification in Architecture

The term ‘Specification of the work’ is a separate contract document which contains the information regarding the cost, quality and quantity of construction materials and also the workmanships. The Specification of the work mainly written for the following three objects. They are:

  • The term Specification defines the quality of materials and workmanship. It is useful for the contractor in filling the tender.
  • The information & instructions mentioned in the specifications are helpful for both the contractor and staff supervisor during the execution of work on site.
  • It also describes the limits and responsibilities of both contractor and the owner during construction.

Importance & Uses of Specification

The drawings and specifications of work are the most important contract drawings. It contains information regarding the materials such as dimensions, prices, types of construction, quantity, qualities, etc. In Specification, all these things can be mention in the form of a table with its graphical presentation. Furthermore, the instructions, limits or responsibilities are also mentioned in the Specification document. Also, in the case of disputes between owner and contractor, it acts as a useful legal document to solve the conflicts.

Types of Specification in Architecture

A Specification in Architecture is broadly categories into the following two types:

1. Brief Specification

  • This specification contains a brief description of each item. 
  • It is not a form of the contract document.
  • Moreover, it is useful for preparing the estimate of work.

2. Detailed Specification

It is a form of the contract document. Also, it can be broadly classified into three categories:

a. GENERAL PROVISION

General Provision is also known as the ‘Condition of Contract’. In General Provision, each and every terms and condition (between the owner and contractor) are mentions properly. These specifications are prepared by the terms or conditions governing the contract we have written.

b. TECHNICAL PROVISION

The technical specification contains the technical requirements of each type of construction. Also, provide the detailed instructions of the quality of the product or materials. The technical provision is of three types:

1. Specification for Materials & Workmanship:

These specifications work on the quality of materials and workmanship. Features included in the following Specification are:

a. For Materials-

  • Appearances
  • Physical properties- strength, thickness, hardness, etc.
  • Chemical Composition of the materials
  • Transportation, Storage and Handling instructions
  • Manufacturing Details 

b. For Workmanship-

  • A detailed description of the Construction method
  • Instructions for protection of the finished work

2. Specification for the Performances:

These specifications contain the overall performance of the product. This specification is generally preparing for machinery or equipment. Features included in the following Specification are:

  • General Description
  • Design & Installation
  • Provision of Special Equipment- Capacity, Power type, Efficiency, Details of the design, etc.
  • Guarantee- Performances and Durability of the equipment

3. Specification for Proprietary Commodities:

These specifications contain details of commercial products which are standardized or patent.

c. STANDARD SPECIFICATION

These specifications are fully written for all items of work. It is possible to standardize the specification for most items occurring in functions of a similar nature.

specification-in-architecture
Specification-in-Architecture

ALSO READ: Building Materials & Construction

Classifications of Specification in Architecture

The specifications can be classified into the following three types. They are:

1. Open Specification-

  • It gives the physical and chemical properties of the materials.
  • These specifications are generally used for public works.

Advantages-

  • Basic Materials
  • True Competition in Market

Disadvantages-

  • Checking & Testing
  • Effect on Design
  • Time Consuming

2. Restricted Specification-

In these specifications, the materials are described. Also, the contractor is restricted between two or more distributors or contractors.

Advantages-

It promotes competition between distributors or contractors. In addition, quotations or lists of approved materials are prepared by mentioning the standard of quality at a reasonable price.

Disadvantages-

  • Problem in Design
  • Quality Products

3. Closed Specification-

This specification is very useful for the owner. The materials or the product is designated by a trading name. Also, mentioning the catalogue number, manufacture details, etc. 

Advantages-

  • Choice of the Owner
  • Completion of the drawing

Design of Specification in Architecture

The design of specification should be very simple, clear and informative. A Specification is a lengthy and complex document. For designing the Specification document, it requires considerable skills as well as wide technical knowledge for its preparations.

Important Aspects of the Design of a Specification in Architecture

  1. Changes
  2. Clearness
  3. Flexibility
  4. Cost
  5. Co-Operation
  6. Product Control
  7. Designer

Principles of Specification Writing

  1. Subject Matter
  2. Grammar
  3. Abbreviation’s
  4. Development of Style
  5. Selection of Words
  6. Accuracy
  7. Conflicting Requirements
  8. Practical Limits and Commercial Sizes
  9. Clearness
  10. Fairness

Specification writing in architecture pdf

Frequently Asked Questions

Importance of specification in architecture?

The drawings and specifications of work are the most important contract drawings. It contains information regarding the materials such as dimensions, prices, types of construction, quantity, qualities, etc. In Specification, all these things can be mention in the form of a table with its graphical presentation. Furthermore, the instructions, limits or responsibilities are also mentioned in the Specification document. Also, in the case of disputes between owner and contractor, it acts as a useful legal document to solve the conflicts.

Principles of Specification Writing ?

1.Subject Matter
2.Grammar
3.Abbreviation’s
4.Development of Style
Selection of Words
5.Accuracy
6.Conflicting Requirements
7.Practical Limits and Commercial Sizes
8.Clearness
9.Fairness

What is Important Aspects of the Design of a Specification in Architecture?

1.Changes
2.Clearness
3.Flexibility
4.Cost
5.Co-Operation
6.Product Control
7.Designer

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