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Definition: Quantity Surveying

If any building is to be constructed, then finding out the quantities of all materials and cost required to construct it, is called as Quantity Surveying .

Topics under Quantity Surveying:

1- Types of Footing 
2-Types of Column 
3-Types of Beam 
4-Types of wall 
5-Types of Slab
6-Unit Conversation 
7-Length calculation 
8- Area Calculation 
9- Volume Calculation 
10-Sub-structure calculation [Item below ground level].
11-Super-structure calculation [Item above ground level].
12-Reinforcement calculation for R.C.C and Steel structure.
13-Computer Application (MS Excel sheet and Auto-cad).
14-Project work.

 (A). List of items to be calculated below Ground level [sub structure]


1- P.C.C under footings

2-Footings

3-Neck columns

4-Tie beams and Strap beams

5-P.C.C under Tie beams

6-Plinth beams or Ground beams

7-P.CC. under plinth beams

8-Grade Slab or Slab on Grade

9-Retaining wall

10-Retaining wall Base

11-Retaining wall P.C.C.

12-Water calculation

13-Rectangular Sump

14-Circular Sump

15-Septic tank

16-Lift pit

17-Earth work Excavation calculation

18-Back- Fill calculation

19-Abstract for the Quantities of Sub-structure.

20-Bill of Quantities

21-Concrete proportions and Ratios with Concrete mix-design

List of items to be calculated for each item below Ground level


Volume of Concrete in m3


Area of Shuttering in m2


Area of Water-proof membrane with bitumen paint in m2


Area of Termite control in m2


Area of Polythene sheet or Vapour Barrier in m2


Reinforcement in Kgs or Tones     


List of items to be calculated above Ground level [Super Structure]


Floor columns


Floor beams


Floor Slab 


Stair cases (Typical & Semi-Circular)


Ramp (inclined & Semi-Circular)


Parking platform


Brick work (No. of bricks required)


Cement: Mortar required for brick work


Wall putty calculation


Paint calculations in Liters (Emulsion paint & Enamel paint)


False-Ceiling Calculations in m2



Flooring Calculations (Marble tiles, Vitrified tiles, Parking Tiles & Inter-lock Tiles)


 Wall Skirting Calculations


Wall Tiles (Ceramic Tiles) calculations


Wood calculations for doors & windows


Doors & Windows Fittings (Tower bolt, Door handle etc)


Windows grill, Glass, and Iron Gate calculations


Over-Head Water tank Calculations


Expansion Joint Details


Weight of Concrete Calculations for Pre-cast Wall, Column, Slabs etc.


Calculation for the miscellaneous item (Lintel, Loft (Chajjas), Window Sunshade & Kitchen Platforms.


Abstract for the quantities of super structure


Bill of Quantities for Super structure.


PROCESS OF EXECUTING WORK ON SITE


1. Termite control (anti-fungus spray)

2. Polythene sheet ( thickness =2mm to 4mm)

3. Plain Cement concrete bed or Blinding (thickness of blinding  10cm) P.C.C bed without Reinforcement  .

4. R.C.C Footing (Reinforced cement concrete bed)

5. Neck column (From top of footing up to bottom of Ground beam) 6. Ground level

7.Floor column (Part of Column above Ground Level) 

8.Bitumen Paint

Reinforced cement concrete (R.C.C):

 This is a Concrete with cement, sand and aggregate with reinforcement. Generally the Grade of concrete is used as M15 with ratio 1:2:4, Where 1 = one bag of cement; 2 = two bags of Sand; 4 = four bags of Aggregate. And 30 liters of water / m


Neck column:

The part of Column which comes between the top of footing to bottom of Ground beam is called as Neck column.

 Bitumen paint:  It can be in liquid form or in Sheet form.

 Its a black colour paint, painted to the structure which is under ground before back filling of Soil. The purpose of using the Bitumen paint is to .

     (i) Increase the life of the structure

(ii) Give strength to it

(iii) To acts as water-proofing agent

      (iv)And to safe the structure from Corrosion

Plain Footing:-

These footings are generally common in both India as well as Gulf countries. It is easy to construct and consume less time. It is constructed where the soil bearing capacity is normal (Good). SBC = 24kn / m     


Brick masonry wall:


The wall which is constructed with bricks is called as brick wall. The thickness of brick wall could be 10cm or 20cm. 10cm wall is called as Single brick wall or partition wall.

20cm wall is called as Double brick wall or outer wall of house or boundary wall. The density of Brick = 2.42 kgs/cm3

With fine clay = 1.92 kgs/cm3


Types of unit conversion:


M.K.S unit (Meter-Kilogram/Second): Meters, Centimeters, millimeters. These units are called as Engineering units.

 F.P.S unit (Foot-Pound/Second): Feet, inches & yards. These units are called as Architectural units.

 

 

S.no

 

Unit

Denoted by

 

symbol

One dimension

 

(Length)

Two Dimension

 

(Area)

Three dimension

 

(Volume)

1

Meter

M

M

M x M = M2 or SQM or Square meter

M x M x M = M3 or CUM or Cubic meter

 

2

 

Centimeter

 

CM

 

CM

 

CM x CM = CM2 or SCM or Square centimeter

CM x CM x CM = CM3 or CUCM or Cubic

 

centimeter

 

3

 

Millimeter

 

MM

 

MM

MM x MM = MM2 or SMM or Square

 

Millimeter

MM x MM x MM = MM3 or CUMM or

 

Cubic millimeter

4

Feet

FT

FT

FT x FT = FT2 or SFT or Square feet

FT x FT x FT = FT3 or CFT or Cubic feet

 

5

 

Inch

 

INCH

 

INCH

INCH x INCH = INCH2 or SINCH or Square

 

inch

INCH x INCH x INCH = INCH3 or CINCH

 

or Cubic inch

 

6

 

Yard

 

YD

 

YD

 

YD x YD = YD2 or SYD or Square yard

YD x YD x YD = YD3 or CYD or Cubic

 

yard

Rahul “Nitin”Gupta (BE Civil Engineering ,PMP,MBA Project Management ) is Project Director of this organization he have 8 years of experience in construction industry .He is experts in Site execution, planning , billing department ,Technical advisor .

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