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Asked: September 22, 2020In: Concrete

How to check the purity of cement?

Komal Bhandakkar
Komal Bhandakkar

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How to check the purity of cement?

  1. nikeetasharma

    nikeetasharma

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    nikeetasharma Guru
    Added an answer on November 24, 2020 at 12:32 pm

    The purity of cement can be checked by following ways :- 1. RUBBING :- Take a small quantity of cement between your fingers and rub it. It must feel smooth while rubbing but if it feels rough than adulteration with sand. 2. HAND INSERTION :- Insert your hand into the cement bag and it should give coRead more

    The purity of cement can be checked by following ways :-
    1. RUBBING :- Take a small quantity of cement between your fingers and rub it. It must feel smooth while rubbing but if it feels rough than adulteration with sand.

    2. HAND INSERTION :- Insert your hand into the cement bag and it should give cool feeling. Hence this cool feeling indicates that there is no hydration reaction is taking place in the bag.

    3. FLOAT TEST :- It is tested by throwing a small quantity of cement in a bucket of water. Thus it should sink and should not float on the surface.

    4. SMELL TASTE :- Take some quantity of cement and smell it. If the cement contains too much of pounded clay and silt as an adulterant, the paste will give an earthy smell.

    5. PRESENCE OF LUMPS :- See that the lumps should not be present in the bag while opening the bag. Thus it ensures that no setting has taken place.

    6. COLOUR :- Basically, the cement should be uniform in colour. Generally the colour of cement is grey with a light greenish shade. The colour of cement gives an indication of excess lime or clay and the degree of burning.

    7. DATE OF PACKING :- Date of manufacturing should be seen on the bag. It is most important because the strength of cement reduces with age.

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Asked: September 23, 2020In: Concrete

How PH value of water influence in construction?

Komal Bhandakkar
Komal Bhandakkar

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How PH value of water influence in construction?

  1. aviratdhodare

    aviratdhodare

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    Added an answer on September 29, 2020 at 5:08 pm

    The PH value is very important in construction activities, particularly for reinforced cement concrete as it is a composite material created with embedded steel bars. If the PH value of water is less than 7 which is the neutral value for good drinking water, then the water will be acidic. The cementRead more

    The PH value is very important in construction activities, particularly for reinforced cement concrete as it is a composite material created with embedded steel bars. If the PH value of water is less than 7 which is the neutral value for good drinking water, then the water will be acidic. The cement concrete’s PH value for fresh concrete will be 12 to 13. This indicates that the concrete is alkaline which gives passivity to protect steel bars from getting corroded. If the water having less PH value than 6, it will start neutralizing the PH value of concrete from 12, to 7 and less, the long lasting alkaline passivity of concrete is considerably reduced, triggering the corrosion chmesity for steel and destroy the steel over a period.

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Asked: September 23, 2020In: Interview Questions

Why only cylinders shape were used to test Split Tensile Strength of Concrete?

Komal Bhandakkar
Komal Bhandakkar

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Why only cylinders shape were used to test Split Tensile Strength of Concrete?

  1. nikeetasharma

    nikeetasharma

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    Added an answer on December 18, 2020 at 7:41 pm

    Tensile test is done on cylinder because only cylinders can be held under pure tension by applying a compressive load. That will only happen if it was under pure tension. If we take any other prismatic shape such as square cross section cylinder, the failure will be via compression but not tension.

    Tensile test is done on cylinder because only cylinders can be held under pure tension by applying a compressive load. That will only happen if it was under pure tension. If we take any other prismatic shape such as square cross section cylinder, the failure will be via compression but not tension.

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Asked: September 19, 2020In: Civil Engineering Jobs

How COVID-19 effects on jobs in the civil engineering sector?

Komal Bhandakkar
Komal Bhandakkar

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How COVID-19 effects on jobs in the civil engineering sector? How to deal with such type of pandemic?

  1. aviratdhodare

    aviratdhodare

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    aviratdhodare
    Added an answer on September 22, 2020 at 1:54 pm

    No workers.. Material Price Hike Material supply delay. Operator issue. Right staff is not available. Idle charges.. New Projects are under hold. Old Projects are not getting to finish. Construction industry is facing huge difficulty due to COVID. lot of corporate companies are terminating engineersRead more

    1. No workers..
    2. Material Price Hike
    3. Material supply delay.
    4. Operator issue.
    5. Right staff is not available.
    6. Idle charges..
    7. New Projects are under hold.
    8. Old Projects are not getting to finish.

    Construction industry is facing huge difficulty due to COVID. lot of corporate companies are terminating engineers due to projects are under hold, projects are cancelled, etc.. even material price are getting increase 8 to 10%. Skilled workers are returned to native places. no right labour are available.. Crane operator are not available. idle charges are getting increased day by day… lot of companies may be closed their office due to covid if this will continue for another 3 months..

    The construction and the real estate industry are one of the major industries that have got a hit because of COVID-19. It actually falls in the top 5 industries that have got impacted the most due to the COVID-19.

    You and I both know that the industry even before COVID was in very bad shape. The virus has just made things worst. I personally always thought the real estate in such an investment where your money invested would never decline. The investment may be stagnant but not decline. But this COVID 19 impact has changed my opinion. I came across an article that said, “properties in premium locations of Mumbai, Maharashtra, and Delhi see a 10-15% decline in property prices.” I woke up to the most shocking news.

    The effect of COVID-19 on the construction industry has deepened the wounds. The industry was seeing some hope of recovery at the start of 2020, but before things could stabilize, COVID hit the industry very hard. It’s going to be difficult for the players in this industry. With so many banks getting caught for their NPA frauds, the banks are also going to be very careful while lending money.

    In short, to summarize, this industry that saw some rays of hope at the start of 2020 has all vanished. Builders are going to find it very difficult to complete their projects due to stall at bank lending hence the industry is going to take at least 2-3 other years to recover and bloom again as it did before.

     

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Asked: September 22, 2020In: Construction

How to increase the light intensity within the building?

Komal Bhandakkar
Komal Bhandakkar

Komal Bhandakkar

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How to increase the light intensity within the building?

  1. AdityaBhandakkar

    AdityaBhandakkar

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    AdityaBhandakkar User
    Added an answer on October 3, 2020 at 11:27 am
    How to increase the light intensity within the building?

    Hi, sunlight is the best source of light and energy. So to use effectively, the placing of windows and other openings and reflective surfaces matters a lot. As a civil engineer, it's our aim to maximize the comfort of the user and reduce the energy consumption for saving electricity. The design of tRead more

    Hi, sunlight is the best source of light and energy. So to use effectively, the placing of windows and other openings and reflective surfaces matters a lot.

    As a civil engineer, it’s our aim to maximize the comfort of the user and reduce the energy consumption for saving electricity.

    The design of the building should be like this the rays of sunlight it will be scattered from the wall and reflect and cover a maximum area of the house. There will be no direct sunlight on polar sites of the walls that are north facing and south-facing. Providing large Windows is a good option to maximize the use of natural sources of light.

    In the present scenario, translucent concrete is been used as concrete which transfers the light in various commercial buildings to reduce the use of artificial electricity. This is a great gift from nanotechnology.

    the position of lights inside the room must be at the middle of the wall and not at the corners so that lights spread 180 degrees.

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Asked: September 19, 2020In: Concrete

Which IS code is used to determine permeability in concrete

Komal Bhandakkar
Komal Bhandakkar

Komal Bhandakkar

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Tell me name of IS code which is used to determine permeability in concrete and tell me its whole procedure?

  1. aviratdhodare

    aviratdhodare

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    aviratdhodare
    Added an answer on September 22, 2020 at 1:54 pm

    IS 3085 : 1965 - Method of Test for Permeability of Cement Mortar and Concrete  

    IS 3085 : 1965 – Method of Test for Permeability of Cement Mortar and Concrete

     

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Asked: September 22, 2020In: Career Guidance

Which are the latest model building bye-laws?

Komal Bhandakkar
Komal Bhandakkar

Komal Bhandakkar

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Komal Bhandakkar AUTHOR

Which are the latest model building bye-laws?

  1. aviratdhodare

    aviratdhodare

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    aviratdhodare
    Added an answer on September 24, 2020 at 6:24 pm

    Model Building Bye Laws - 2016 General Building Permit within 30 days else deemed sanctioned Ease of Doing Business Single window clearance Online Approval System Empowering Professionals Green Building Norms Provisions for Differentty Abled, Elderly and Children Swachh Bharat Mission Definitions ApRead more

    Model Building Bye Laws – 2016

    General

    • Building Permit within 30 days else deemed sanctioned
      Ease of Doing Business
      Single window clearance
      Online Approval System
    • Empowering Professionals
    • Green Building Norms
    • Provisions for Differentty Abled, Elderly and Children
    • Swachh Bharat Mission

    Definitions

    Applicability

    Applicable to building activities in the State/Urban Center/Town for which they are framed.

    • To be read in conjunction with Master Plan/ Development Plan/ Regional Plan/ Any other statutory plan in force.
    • All mandatory Master Plan/ Zonal Plan/ Development Code regulations regarding land and building use, coverage, FAR, set-backs, open spaces, height, number of stories, number of dwelling units, parking standards etc., shall be applicable.
    • Bye Laws to be reviewed after 5 years.

    Procedure for obtaining Building Permit

    • Documents Required. Layout & Site Plan, Building Plans, Service Plans for Water Supply, Sewage Disposal, Electricity Supply, Gas Supply, Fire & Safety Plans, Disaster Management (if applicable).
    • Other Documents. Ownership docs., Certificate of Structural Safety, Certificate of Supervision, Property Tax Receipts, Undertakings, Bonds, NoCs and Forms
    • Building Permit valid for 3 years for Residential, Industrial and Commercial Buildings (4 storeyed) and for 4 years for multi-storeyed buildings (more than 15 m in height). Revalidation on yr-to-yr basis on payment of revalidation fees.
    • Completion/ Occupancy Certificate to be applied after building completed as per approved plans.
    • Penal Actions in case bldg not built as per Bye Laws and unauthorized construction.

    Development Codes & Building Requirements

    • All mandatory Master Plan/ Zonal Plan/ Development Code regulations regarding land and building use, coverage, FAR, set-backs, open spaces, height, number of stories, number of dwelling units, parking standards etc., shall be applicable.
    • Where Master Plans/ Zonal Plans/ Development Codes are silent on such issues, the state may formulate Building Bye Laws that shall be applicable. MBBL 2016 can be followed as guideline on such regulations.

    Provisions for Differently Abled, Elderly and Children

    • Applicable to all Buildings used by Public. Educational, Institutional, Assembly, Commercial, Business, Mercantile Buildings and Group Housing constructed on plots of more than 2000 sqm area.
    • Not applicable to private residential buildings
    • Provisions. Ambulant Disabled People, Wheel Chair Criteria, Access Width, Ramps, Nor-Slip Surface, Parking, Lifts, Stairways, Corridors, Toilets, Signage, PA System

    Rain Water Harvesting

    • Applicable on plots more than 100 sam. in size
    • Owner to submit complete proposal for rainwater harvesting — roof catchment, gutters, down pipes, rain water/ storm water drains, storage tanks/ pits, ground water recharge structures like pit, trench, tube well etc.
    • Applicable to public open spaces of more than 500 sqm. area

    Green Building Norms

    • Applicable on plots more than 100 sam. in size
    • Provisions for Sanction as per Plot Size
      1. Water Conservation and Management
      a. Rain Water Harvesting (by Recharge)
      b. Low Water Consumption Plumbing Fixtures
      c. Waste Water Recycle and Reuse
      d. Reduction of hardscape
      2. Solar Energy Utilization
      a. Installation of Solar Photovoltaic Panels
      b. Installation of Solar Assisted Water Heating Systems
      3. Energy Efficieny
      a. Low Energy Consumption Lighting Fixtures (Electrical Appliances – BEE Star and Energy Efficient Appliances)
      b. Energy Efficiency in HVAC systems
      4. Waste Management
      a. Segregation of Waste
      b. Organic Waste Management
    • Owner can apply for Green Building Ratings and avail additional FAR as per Master Plan

    Streamlining Approvals

    • FDI limit for Built-up Area reduced from 50,000 sqm to 20,000 sqm
    • External bodies like AAI, DFS, NMA, UAC, HCC, MRC etc. directed to prepare online NOC system, to be integrated with online single window clearance. Applicant to submit only one Common Application Form (CAF)
    • Fast Tracking Approval Process
      Online Approval System
      Empowering Professionals and Outsourcing
      Single Window Clearance
      Integration of Agencies

    Risk based classification of bldg

    Risk Category (Residential Bldg’s)

    Parameter Very low Low Moderate High
    Size of the plot Below 105m2 105 m2 – 500 m2 Above 500 m2 All sizes
    Ht of bldg. Below 15m Below 15m Below 15m 15m & above
    Use of the premise Residential plotted Residential plotted Residential plotted Group housing
    Max. sanction time Not reqd Architect/Engr can issue permit. It reqd,  Architect/Engr can submit plans to authority for approval. Authority to approve within 10 days 20 days 20 days

    Integration of Environment Clearance with Building Permission

    • Buildings with BUA upto 1,50,000 sqm — Approval by local body
    • Buildings with BUA above 1,50,000 sqm — Approval by MoEF&CC
    • Buildings with BUA upto 1,50,000 sqm, classified under 3 categories:
      1. Category ‘A’ buildings – BUA 5,000 sqm to 20,000 sqm
      2. Category ‘B’ buildings – BUA 20,000 sqm to 50,000 sqm
      3. Category ‘C’ buildings – BUA 50,000 sqm to 1,50,000 sqm
    • Environmental Conditions to be met — Natural Drainage, Rain Water Harvesting, Solid Waste Management, Green Energy Norms, Air Quality & Noise, Green Cover, Sewage Treatment etc.
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Asked: September 19, 2020In: Concrete

what is the need to design a mix in concrere

Komal Bhandakkar
Komal Bhandakkar

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 what is the need to design a mix concrete ?

  1. nikeetasharma

    nikeetasharma

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    Added an answer on December 17, 2020 at 4:03 pm

    Good concrete mix design creates the foundation of a sound infrastructure. Concrete mix design involves a process of preparation in which a mix of ingredients creates the required strength and durability for the concrete structure.

    Good concrete mix design creates the foundation of a sound infrastructure. Concrete mix design involves a process of preparation in which a mix of ingredients creates the required strength and durability for the concrete structure.

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