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Asked: June 18, 2020In: Construction

Which types of chemicals and admixtures used in the construction industry for normal conditions as well as seismic conditions? 

Shreyas Patel
Shreyas Patel

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Which types of chemicals and admixtures used in the construction industry for normal conditions as well as seismic conditions? How we use the chemicals in building construction? When we required the chemicals for building construction?

  1. Komal Bhandakkar

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    Added an answer on October 20, 2020 at 6:15 pm
    This answer was edited.

     Types of Concrete Admixtures: Air-entraining admixture Accelerating admixture Retarding admixtures Water reducing admixtures Superplasticizer. Chemicals used as retarding agent in concrete: Hydroxyl carboxylic acid and their salts. Soluble zinc Soluble Borates Unrefined Lingo sulphonates. Thank youRead more

     Types of Concrete Admixtures:

    1. Air-entraining admixture
    2. Accelerating admixture
    3. Retarding admixtures
    4. Water reducing admixtures
    5. Superplasticizer.

    Chemicals used as retarding agent in concrete:

    • Hydroxyl carboxylic acid and their salts.
    • Soluble zinc
    • Soluble Borates
    • Unrefined Lingo sulphonates.

    Thank you.

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Asked: June 18, 2020In: Construction

What is the Time period of a building and its relation with frequency?

Rohan Chaugule
Rohan Chaugule

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What is the Time period of a building and its relation with frequency?

  1. Komal Bhandakkar

    Komal Bhandakkar

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    Added an answer on October 20, 2020 at 5:33 pm
    This answer was edited.
    What is the Time period of a building and its relation with frequency?

    Period of building and its relation with frequency:   Natural period: The natural period of a building is simply a time taken by it to undergo one complete cycle of oscillation. The natural period is one of the properties or building which is controlled by mass and stiffness. Formula to find out natRead more

    Period of building and its relation with frequency:

      Natural period:

    • The natural period of a building is simply a time taken by it to undergo one complete cycle of oscillation.
    • The natural period is one of the properties or building which is controlled by mass and stiffness.
    • Formula to find out natural period is,

    Tn =2π√(m/k) where,

    • Tn is a natural period of building.
    • m is mass
    • k is stiffness

    Reciprocal of the natural period of a building is nothing but the natural frequency and its unit is Hertz(Hz)


    Thank you.

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Asked: July 16, 2020In: Construction

Why use a concealed beam in construction?

fathima
fathima

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Why use a concealed beam in construction?

  1. DevilAVRT

    DevilAVRT

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    Added an answer on July 17, 2020 at 1:39 pm

    It is otherwise called "Concealed Beam". The Hidden beam is a way to depict the load scattering on to supporting slab. Hidden beams are for the most part embedded inside the suspended slabs where section thickness is extensive. In the event that the cantilever beam is with a Hidden beam, it can notRead more

    It is otherwise called “Concealed Beam”.

    The Hidden beam is a way to depict the load scattering on to supporting slab.

    Hidden beams are for the most part embedded inside the suspended slabs where section thickness is extensive.

    In the event that the cantilever beam is with a Hidden beam, it can not go about as an unadulterated beam and will just circulate the loads over the slab area and it can not be considered as basically bolstered one.

    – as it were, “The hidden beam isn’t a beam and the main way to spread the focused loads of the walls on the piece region. The Hidden beam is a virtual beam that was started by somebody to utilize the Beam free headroom.

    *Hidden beam is given among living and feasting spaces right angle to one another. This gives a perfect and level roof surface that is useful for the look.

    Basically it makes a spanning issue, as spans for structural help are at a right angle to one another. This implies one slab structurally basically rests over the other.

    Concealed beam between balcony and room is normal to encourage simple consideration of the gallery into room space later.

    Purpose

    To scatter loads on supporting slabs.
    To break a wide board of slab to a significant size.
    To accomplish max floor height.
    To make room for electro mech ventilation work.
    To improve architectural aesthetic appearance by giving flawless and leveled ceiling surface

    Advantages

    It saves floor height clearance.
    It permits if brickwork to be built over a slab.
    It is economical
    It gives the better interior appearance

    Disadvantages

    The disservice of the concealed beam is that it’s extensively low malleability in view of the height reinforcement proportion that is given to repay to depth limitation explicitly at column connection.

    Fundamentally it makes a traversing issue, as spans for structural support are in a correct right to one another. This implies one slab fundamentally rests over the other.

    What is a hidden beam? Purpose, Applications and Design

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Asked: May 19, 2020In: Construction

What are the common Roof Types?

amr soliman
amr soliman

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What are the common roof types?

  1. nikeetasharma

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    Added an answer on October 29, 2020 at 6:09 pm

    Roof is the most important part of the building. Thus, we can say without roof our building or house is incomplete. There are many types of roofs available which are classified on the basis of their shape and size. Hence, knowing your roof style also can help you to decide what roof material or shinRead more

    Roof is the most important part of the building. Thus, we can say without roof our building or house is incomplete. There are many types of roofs available which are classified on the basis of their shape and size. Hence, knowing your roof style also can help you to decide what roof material or shingle works is best for your home.

    Some of the common roof types are as follows ;
    1. Saltbox Roofs
    2. Mansard Roofs
    3. Gambrel Roofs
    4. Pyramid Roofs
    5. Hip Roofs
    6. Cross Gabled Roofs
    7. Flat Roofs
    8. Bonnet Roofs
    9. Skillion Roofs
    10. Sawtooth
    11. Butterfly Roofs
    12. Curved Roofs
    13. Domed Roofs

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Asked: September 8, 2020In: Construction

Can we place a 500 liter water tank on a 2″ Kadapa slab placed at 6 feet height supported by two solid block walls?

aviratdhodare
aviratdhodare

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Can we place a 500-liter water tank on a 2″ Kadapa slab placed at 6 feet height supported by two solid block walls?

  1. AdityaBhandakkar

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    Added an answer on September 19, 2020 at 2:24 pm
    Can we place a 500 liter water tank on a 2″ Kadapa slab placed at 6 feet height supported by two solid block walls?

    Hi, Kadappa stone of 2" ( 50.8mm ) having its density in the range of 5.0 to 5.4 kg/cm^3 with a water absorption ratio of less than 2%. After calculation, you may found that at 6-meter height, it is not able to bear the weight of a 500-liter water tank. Thus, support in the middle must be provided fRead more

    Hi,

    Kadappa stone of 2″ ( 50.8mm ) having its density in the range of 5.0 to 5.4 kg/cm^3 with a water absorption ratio of less than 2%.

    After calculation, you may found that at 6-meter height, it is not able to bear the weight of a 500-liter water tank.

    Thus, support in the middle must be provided for stability and to increase the bearing strength of kadapa so that it lasts for a long duration.

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Asked: September 19, 2020In: Construction

how to find soil upward pressure,if SBC 250KN

GOLDENHOMES
GOLDENHOMES

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Definition of Upward Soil Pressure _ Chegg.com

  1. Omprakash Dhawale

    Omprakash Dhawale

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    Omprakash Dhawale Beginner
    Added an answer on October 3, 2020 at 11:24 am

    Sir, We can simply define upward soil pressure. The addition of all overburden pressure from soil weight which is present above the footing as well as self-weight of the structure. One more interesting thing is that it is also called as the 'Allowable Bearing Capacity' of soil. Allowable Bearing CapRead more

    Sir,

    We can simply define upward soil pressure. The addition of all overburden pressure from soil weight which is present above the footing as well as self-weight of the structure.

    One more interesting thing is that it is also called as the ‘Allowable Bearing Capacity’ of soil.

    Allowable Bearing Capacity=(Density of soil x Depth of foundation) + Self weight of foundation.

    One more important note is that the distribution of allowable bearing capacity for non-cohesive soil is greater than in the middle portion.

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Asked: September 28, 2020In: Construction

What is Trapezoidal Crest Wall?

nikeetasharma
nikeetasharma

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What is Trapezoidal Crest Wall?

  1. aviratdhodare

    aviratdhodare

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    Added an answer on October 28, 2020 at 11:14 pm

    Trapezoidal weir is also called Cipolletti weir, used for measuring medium discharge & is a combination of ▭ular & △ular weirs. The slope of the sides, inclined outwardly from the crest, should be 1 horizontal : 4 vertical (1H : 4V). The selected length of the notch (L) should be at least 3HRead more

    Trapezoidal weir is also called Cipolletti weir, used for measuring medium discharge & is a combination of ▭ular & △ular weirs. The slope of the sides, inclined outwardly from the crest, should be 1 horizontal : 4 vertical (1H : 4V). The selected length of the notch (L) should be at least 3H & preferably 4H or longer.

    Q = ⅔ Cd L √2g H3/2 + 8/15 Cd tan θ/2 √2g H5/2

    If Q is lps, H in cm & L in cm.

    Q = 0.0186L H3/2

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Asked: July 31, 2020In: Construction

What is difference between Tie Beam and Plinth Beam?

Himanshu joshi
Himanshu joshi

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What is difference between Tie Beam and Plinth Beam?

  1. nikeetasharma

    nikeetasharma

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    Added an answer on October 8, 2020 at 7:49 pm

    TIE BEAM :- The beam which connects two or more columns/rafters in a roof/roof truss or in any height above floor level is called tie beam. Tie beams are mainly provided in roof truss and at plinth level. These beams do not convey any floor loads and only act as length breaker for columns where theRead more

    TIE BEAM :-

    The beam which connects two or more columns/rafters in a roof/roof truss or in any height above floor level is called tie beam. Tie beams are mainly provided in roof truss and at plinth level. These beams do not convey any floor loads and only act as length breaker for columns where the floor height is unusually high.

    The main purpose of tie beam is to carry axial compression and to transfer the rafters load to the column. It also prevents column from buckling.

    PLINTH BEAM :-

    The beam which is provided at the plinth level is called plinth beam. In farmed structure, this beam is the first beam constructed after foundation.

    The purpose of plinth beam is to distribute loads of walls over the foundation and it also connect all the columns. It also prevents cracks from the foundation to the wall. It also avoid differential settlement.

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