Sand for house construction

Sand for house construction

Sand

Another prominent material used in mortar and concrete mixtures during house construction is sand. It is made up of finely divided rocks and mineral particles. Color of sand varies in different regions. It is available in Punjab and KPK region is greyish in tone where as it is available in Karachi, coastal areas of Sindh and Baluchistan has a light brownish tone. It is extracted from open pits either from riverbeds or from beaches. However there are several inland and non-coastal sand ridges across the country especially in Punjab and Baluchistan that are used for it’s mining.

It is named after the region or river from which it is extracted. In Punjab, available sands are:

  1. Ravi
  2. Chenab
  3. Lawrencepur
  4. Ghazi

sand for house construction 10 marla

Quantity check on site

It is delivered on sites through dumpers or trolleys. Its quantity is calculated in unit of cubic feet, also referred to as “sankra” in local language. If it is delivered in trolleys then its calculation is a complicated process. Most of the trolleys either consist of 250 cubic feet (2.5 sankra) of sand or maximum of 400 cubic feet (4 sankra). In case of dumpers calculation is very easy and it must be done to stay safe from fraudulent dealers who tend to charge more on basis of fake quantities. Calculation is simple, take the inner measurements of dumpers storage area, measure length, width and depth with a help of steel road. Depth should be measured carefully only up to the extent at which sand is present. If measurements comes out in whole figures then:

Total Quantity = Length (ft.) x Width (ft.) x Depth (ft.)

In other case if the figures are not whole, then covert the architectural measurements into decimal measurements by following method:

Suppose,

                        Length = 15’8” (15 feet & 8 inches)

                        Width = 7’4”     (7 feet & 4 inches)

                        Depth = 9’10” (9 feet & 10 inches)

 Feet figures will remain the same, convert figures of inches:

                       8” = 8/12 = .67

                        4” = 4/12 = .33

                        10”=10/12=.83

Hence,

                        Length = 15.67

                        Width = 7.33

                        Depth = 9.83

 Total Quantity = 15.67 x 7.33 x 9.83 = 1130 cubic ft

Quality check on site

It is a very critical material since it is used in mortar mixtures and concretes. In above mentioned available sands, best is extracted from Ghazi and lawrencepur and both are widely available in northern Punjab and KPK region. Lawrencepur is also available in Lahore region but at higher rates because of freight expenses. Out of remaining two, Chenab is the best sand to be used and is easily available in Central Punjab region. However quality check should always be carried out even if best of available is being used.

Water test

Drop a small quantity of sand in bucket of water, sand particles will not float on top. Content floating on the top will be clay or mud

Mud/soil content

Sand should be uniform in colour. If it were greyish sand, any content such as mud/soil would be easily visible in form of mass substances.

Rubbing

No muddy effect should be left when pure sand is rubbed against the fingers.

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About The Author

Mohsin Munir
Holding a degree in BS EE (Electrical engineering) and astounding knowledge of house construction business since 2010, wide experience and relevant expertise in the construction business. Believe in research based strategy while holding a distinguished position in the construction market. Started at a small scale in 2010 and recognised among the top builders and contractors in Pakistan now, especially among the expatriates and overseas Pakistanis who always trusted in our commitment and services.

4 Comments

  • Ahmad Ali Shah on July 25, 2018

    What about the quality of coastal (yellowish)sand used locally in karachi????

    • Mohsin Munir on July 25, 2018

      Dear Ahmad,
      I have no experience of working in Karachi or coastal areas, anyone with experience can add to this information. If you have experience you can share with me and i will add in this blog with your name.

  • Ahmad Ali Shah on July 25, 2018

    Thanks for the valuable info….. I found such a comprehensive information for the first time. Love you

    • Mohsin Munir on July 25, 2018

      Thanks alot for kind words of appreciation! Stay connected for more and upcoming information.

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