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Gangadhar
Gangadhar

Gangadhar

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Which cement is best for concrete slab construction? OPC or PPC? What is the difference and advantages of these cements for slab?

  1. AdityaBhandakkar

    AdityaBhandakkar

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    AdityaBhandakkar User

    Generally, Ordinary Portland cement (OPC) is used in the factories, power plants and in large construction slabs. Portland pozzolana cement (PPC) is used for the construction of houses, schools, and residential building slabs. PPC is cheaper than ordinary Portland cement. Thus to reduce the buildingRead more

    Generally, Ordinary Portland cement (OPC) is used in the factories, power plants and in large construction slabs.

    Portland pozzolana cement (PPC) is used for the construction of houses, schools, and residential building slabs. PPC is cheaper than ordinary Portland cement. Thus to reduce the building making cost, PPC should be adopted.

    Both the PPC and OPC cement is used in the construction of slabs.

    Portland pozzolana cement is Better resistant to sulfate attacks. Thus PPC is used in underwater construction where water has some amount of sulfur quantity. Its setting time is higher than OPC.

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Shivan
Shivan

Shivan

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What are the properties of good building stones?

  1. aviratdhodare

    aviratdhodare

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    aviratdhodare
    This answer was edited.

    APPEARANCE The stone to be used for facework must have uniform and pleasing color. It must be free from cavities, crack, flaws and patches of loose and soft materials. STRENGTH A good bldg stone should have sufficient crushing strength to withstand the load of superstructure. It should ≮ 1000 kg/cm²Read more

    APPEARANCE

    • The stone to be used for facework must have uniform and pleasing color.
    • It must be free from cavities, crack, flaws and patches of loose and soft materials.

    STRENGTH

    • A good bldg stone should have sufficient crushing strength to withstand the load of superstructure.
    • It should ≮ 1000 kg/cm².

    HARDNESS, TOUGHNESS AND RESISTANCE TO ABRASION

    • The stone to be used in stone pavements, as railway ballast or road metal must be sufficiently hard, tough, resistance to abrasion.
    • It must be able to resist wear and tear.

    DURABILITY

    • A good bldg stone must be durable enough to resist the effect of weathering against eg., rain, wing, temp, etc.
    • It should have fine grained, compact, and crystalline structure.

    TEXTURE

    A good bldg stone should have a closed grained and compact texture.

    WORKABILITY

    The stone to be used for ornamental craving and architectural appearance should be easily and economically dressed.

    SEASONING

    The stone to be used for an imp interior work should be well seasoned. Presence of moisture makes the stone soft and it is liable to an early decay when used in structural work.

    POROSITY

    • A good bldg stone should be less porous.
    • It should not absorb more than 5% of water.
    • Any stone absorbing 10% of water should be rejected.

    RESISTANCE TO FIRE

    • A good bldg stone should be able to resist high temp.
    • Its minerals constitutes should have equal coeff for expansion.

    SPECIFIC GRAVITY

    • The stone to be used on heavy engg works, docks, harbours, gravity dams, etc must have high specific gravity.
    • Its varies from 2.4 – 2.8.

    RESISTANCE TO ELECTRICITY

    • A good bldg stone should be non-absorbent like marble and slate etc.
    • It can offer good resistance to electricity.
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Gopal Mishra
Gopal Mishra

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What are the difference between Tender and Contract Documents? Can we mention tender documents as contract document while issuing LOA to  the Contractor. if no then what is the difference?

  1. Gopal Mishra

    Gopal Mishra

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    Gopal Mishra

    To understand the difference between tender documents and contract documents, first we have to understand what these documents contain. Tender Documents: A tender is an offer in writing to contractors to execute the some specified works or to supply specified materials within a fixed time frame andRead more

    To understand the difference between tender documents and contract documents, first we have to understand what these documents contain.

    Tender Documents:

    A tender is an offer in writing to contractors to execute the some specified works or to supply specified materials within a fixed time frame and as per conditions of contract and agreement between the contractor and the owner or the department or the party.

    The tender documents contains the bill of quantities (BOQ), specifications of the works to be carried out, time frame for the completion of the work, conditions of the contract and plans and drawings. These documents are provided to the contractor on the payment of certain fees. The contractor who quotes the lowest rates for the overall works are offer the contract to execute the work.

    Contract Documents:

    Contract documents are the agreement between the owner or the party or the department and the contractor to execute the works as specified in the tender documents as per conditions of contract on the rates quoted by the contractor.

    The difference between Tender and Contract Documents:

    The difference here to be noted is that tender documents are offered to as many contractors as possible to get the lowest quotes for the work specified, while the contract documents are signed only with the contractor with lowest tender or rates.

    While the tender documents contains the conditions of contract and all the details for the specified work, there is not much difference between the two in terms of contents. But tender documents can not be submitted as Letter of Acceptance (LOA) as these are two different types of documents. While a tender document can not bind the contractor to do the work, a contract document binds the contractor to complete the work as per the agreement.

    Simple Example to understand the difference between tender and contract documents:

    When you are selected for a job in a company you are offered offer letter to join the company. But getting selected in a company does not mean that you join the same company, you may have other offer letters as well. But when you sign the letter of acceptance (LOA) for the job, you are bound to join the company. So, here offer letter from the company is a tender document and LOA is the contract document.

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Ancy Joby
Ancy Joby

Ancy Joby

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What is the difference between pretension and post tension in concrete?

  1. nikeetasharma

    nikeetasharma

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    nikeetasharma Guru

    For pretension concrete the steel is the first tensioned in a frame or between anchorages external to the member, therefore the concrete is then cast around it. Post tensioned concrete is made by casting concrete that contains ducts through which tendons can be threaded.

    For pretension concrete the steel is the first tensioned in a frame or between anchorages external to the member, therefore the concrete is then cast around it. Post tensioned concrete is made by casting concrete that contains ducts through which tendons can be threaded.

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Rohan Chaugule
Rohan Chaugule

Rohan Chaugule

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Expert

What are the standard sizes of tiles available in the market? (Granite, marble, vitrified)

  1. nikeetasharma

    nikeetasharma

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    nikeetasharma Guru

    The usual sizes of tiles available in the market are 20*20 cm, 20*10 cm, 15*15 cm. The thickness of these tiles are 15mm and 20 mm. But nowadays large size of tiles are preferred over small tiles. Thankyou.

    The usual sizes of tiles available in the market are 20*20 cm, 20*10 cm, 15*15 cm. The thickness of these tiles are 15mm and 20 mm. But nowadays large size of tiles are preferred over small tiles.

    Thankyou.

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fathima
fathima

fathima

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What is the CBR value for sub grade in road construction?

  1. nikeetasharma

    nikeetasharma

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    nikeetasharma Guru

    A clayey soil generally has a low CBR value (less than 8). Sands are more granular and drain better and will generally have CBR values between 15 and 35. Gravel will have the best CBR values, generally 25 and up. That is why it is suggested to save the best material to cap the subgrade.

    A clayey soil generally has a low CBR value (less than 8). Sands are more granular and drain better and will generally have CBR values between 15 and 35. Gravel will have the best CBR values, generally 25 and up. That is why it is suggested to save the best material to cap the subgrade.

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Emmyvin
Emmyvin

Emmyvin

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What is the life span of a building without any defects and any complaint?

  1. Preet Chovatiya

    Preet Chovatiya

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    Best Answer
    Preet Chovatiya Learner

    The life span of a building generally depends on geographical location, and it is different in country wise. Here I explain the life span of the building and their components in India are as below: The average life span of a concrete building is 75 to 100 years. the lifespan of building the componenRead more

    The life span of a building generally depends on geographical location, and it is different in country wise. Here I explain the life span of the building and their components in India are as below:

    The average life span of a concrete building is 75 to 100 years. the lifespan of building the componentwise table is attached below:

    The lifespan of Concrete Building Component wise

     

     

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DevilAVRT
DevilAVRT

DevilAVRT

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Explain the construction of IPS flooring?

  1. nikeetasharma

    nikeetasharma

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    nikeetasharma Guru

    IPS flooring generally stands for Indian Patent Stone which is also considered as a cheap flooring. The constituent of this type of flooring is cement, admixture, down 10mm coloured/white chips mixed with required water of around 35-50 mm thick on rcc/pcc surface. It is done through panel system makRead more

    IPS flooring generally stands for Indian Patent Stone which is also considered as a cheap flooring. The constituent of this type of flooring is cement, admixture, down 10mm coloured/white chips mixed with required water of around 35-50 mm thick on rcc/pcc surface. It is done through panel system making by glass trip/aluminium strip. Flotter can be used to surface smooth.

    IPS floor can be used for all types of floors.

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