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SPECIFICATIONS OF
BUILDINGS
Prepared by :
Simarpreet Singh
A.P., Civil Engg.
ACET, Amritsar
simarpreet_batra@yahoo.com
Table of Contents
 Definition
 Factors
 Classification
 General Specifications for buildings
 Detailed Specifications...
Definition
 Describes the nature and class of
work, materials to be used in work etc.
 Describe quantity of materials,
p...
Factors
The factors on which specifications
depend upon are mentioned below :
 Nature of the work
 Strength of materials...
Classification
Specifications are of two types :
 General or Brief Specification : It is
different for different classes ...
General Specification
(for First Class Buildings)
 Foundation and Plinth :
 DPC : 1:1.5:3 cement concrete of 1”
thicknes...
General Specifications
(Foundation and Plinth)
 First
Class
Building
s
Ist class
brickwork
in 1:6
cement
mortar
over 1:4:...
General Specifications
(Damp Proof Course)
 First
Class
Building
s
1:1.5:3
cement
concrete of
1” thickness
with
standard
...
General Specifications
(Superstructure )
 First
Class
Building
s
First class
brickwork
with 1:6
cement
mortar.
Lintels ov...
General Specifications
(Roofing)
 First
Class
Building
s
Height of
rooms shall
not be less
than 12’.
Over RCC
slab
insula...
General Specifications
(Flooring)
 First
Class
Building
s
2.5cm
cement
concrete
over 7.5cm
lime
concrete
 Second
Class
B...
General Specifications
(Finishing)
 First
Class
Building
s
Inside and
outside shall
be 12mm
cement lime
plastered
1:1:6. ...
Detailed Specifications
Sample of Detailed Specifications of
building works is mentioned on link
mentioned below :
http://...
General Specifications
(Roads)
 Subgrade : Well consolidated and
compacted with camber 1 in 60
 Soiling : Minimum 1’ wid...
General Specifications
(Roads)
 Bitumen first coat : Stone grit of 20mm
gauge at 220 kg asphalt or Tar no.3 and 1.35
cum ...
THANK YOU
Any questions?
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This presentation will give the brief introduction to the specifications, its different types along with link to example of detailed specifications. Specifications of buildings and roads are discussed.

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Specifications of buildings

  1. 1. SPECIFICATIONS OF BUILDINGS Prepared by : Simarpreet Singh A.P., Civil Engg. ACET, Amritsar simarpreet_batra@yahoo.com
  2. 2. Table of Contents  Definition  Factors  Classification  General Specifications for buildings  Detailed Specifications for buildings  General Specifications for roads
  3. 3. Definition  Describes the nature and class of work, materials to be used in work etc.  Describe quantity of materials, proportion of mortar, workmanship etc. which are not mentioned in drawings.  Drawings and Specifications collectively define the full structure.
  4. 4. Factors The factors on which specifications depend upon are mentioned below :  Nature of the work  Strength of materials  Availability of materials  Quality of Materials
  5. 5. Classification Specifications are of two types :  General or Brief Specification : It is different for different classes of buildings i.e. ◦ First Class ◦ Second Class ◦ Third Class ◦ Fourth Class  Detailed Specifications
  6. 6. General Specification (for First Class Buildings)  Foundation and Plinth :  DPC : 1:1.5:3 cement concrete of 1” thickness with standard water proofing material mixed with cement and two coatings of bitumen  : : Flooring :
  7. 7. General Specifications (Foundation and Plinth)  First Class Building s Ist class brickwork in 1:6 cement mortar over 1:4:8 cement concrete  Second Class Building s Ist class brickwork with lime mortar over lime concrete  Third Class Building s IInd class brickwork in lime mortar over lime concrete  Fourth Class Building s Sun-dried or kutcha bricks in mud mortar
  8. 8. General Specifications (Damp Proof Course)  First Class Building s 1:1.5:3 cement concrete of 1” thickness with standard water proofing material mixed with cement and of bitumen  Second Class Building s 1:2 cement mortar of 2cm thickness with standard water proofing material  Third Class Building s 1:2 cement mortar of 2cm thickness with standard water material  Fourth Class Building s ---
  9. 9. General Specifications (Superstructure )  First Class Building s First class brickwork with 1:6 cement mortar. Lintels over doors and windows shall be of RCC.  Second Class Building s Second class brickwork in lime mortar. Lintels over doors and windows shall be of RB. Class Building s Second class brickwork in mud mortar. Doors and window openings provided with arches of second class brickwork in lime mortar or wooden planks  Fourth Class Building s Sun-dried or kutcha bricks in mud mortar. Doors and window openings provided with arches of second class brickwork in lime mortar or wooden planks
  10. 10. General Specifications (Roofing)  First Class Building s Height of rooms shall not be less than 12’. Over RCC slab insulation layer should be provided.  Second Class Building s R.B. slab with 7.5cm lime concrete terracing aove (Flat terraced roofs over wooden beams or Jack arched roofs)  Third Class Building s Mud over bricks or planks over wooden beams OR G.I. sheet sloping roof  Fourth Class Building s Tile roof over bamboo and wooden supports
  11. 11. General Specifications (Flooring)  First Class Building s 2.5cm cement concrete over 7.5cm lime concrete  Second Class Building s 2.5cm cement concrete over 7.5cm lime concrete. Verandah floor shall be of brick tile over lime concrete  Third Class Building s Brick on edge floor over well rammed earth  Fourth Class Building s Kutcha floor or earthen floor finished with cow-dung lapping.
  12. 12. General Specifications (Finishing)  First Class Building s Inside and outside shall be 12mm cement lime plastered 1:1:6. Inside and outside whitewashe d with interior distempered  Second Class Building s Inside and outside shall be 12mm cement mortar plastered 1:6. Ceiling shall be cement plastered 1:3. inside and outside whitewashed  Third Class Building s Inside and outside shall be plastered with lime mortar and whitewashed  Fourth Class Building s Inside and outside shall be water proof mud plastered
  13. 13. Detailed Specifications Sample of Detailed Specifications of building works is mentioned on link mentioned below : http://www.dudbc.gov.np/uploads/defaul t/files/945fbff43121355eead2401e8444 6cb5.pdf
  14. 14. General Specifications (Roads)  Subgrade : Well consolidated and compacted with camber 1 in 60  Soiling : Minimum 1’ wider than metaled width of road with – ◦ Over burnt bricks filled up with sand and 1” thick earth lightly compacted ◦ Stone boulders 6” thick well packed and compacted earth over it  Inter Coat and Top Coat : Stone ballast or over burnt brick ballast of 4.5” and consolidated as well as compacted to 3”
  15. 15. General Specifications (Roads)  Bitumen first coat : Stone grit of 20mm gauge at 220 kg asphalt or Tar no.3 and 1.35 cum stone grit per 100 sqm.  Bitumen second coat : Stone grit of 12mm gauge at 120 kg asphalt and 0.75 cum stone grit per 100 sqm.  Brick Edging : Over burnt bricks on both sides  Misc. : ◦ For heavy traffic wearing surface may be provided with cement concrete ◦ If subgrade is soft or weak well compacted thick sub base of inferior materials to be used
  16. 16. THANK YOU Any questions?
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This presentation will give the brief introduction to the specifications, its different types along with link to example of detailed specifications. Specifications of buildings and roads are discussed.

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