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Fasi Ur Rahman
Fasi Ur Rahman

Fasi Ur Rahman

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What is the Diference between Semi Dense Bituminous Macadam (SDBC) and Bituminous Macadam (BM)?

  1. MohamedAquib

    MohamedAquib

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    MohamedAquib User

    Bituminous Macadam is a Binder which is used for the 24-meter & 12-meter roads where the traffic movement is heavy. This can be laid in two or more courses for the better compressive strength. This shall comprise of 5 TO 7 percentage of bitumen. Semi Dense Bituminous Macadam is a binder that isRead more

    Bituminous Macadam is a Binder which is used for the 24-meter & 12-meter roads where the traffic movement is heavy. This can be laid in two or more courses for the better compressive strength. This shall comprise of 5 TO 7 percentage of bitumen.

    Semi Dense Bituminous Macadam is a binder that is laid after the BM course to obtain smoother finish on road surfaces. This is used in small roads of width less than 9 Meters. This course is laid directly on the wet mix macadam in smaller roads with a thickness of 25-30 mm. This shall comprise of 3 to 5 percentage of Bitumen.

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keralitecivilengineer
keralitecivilengineer

keralitecivilengineer

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When is scarification needed for road work?

  1. Kuldeep Singh

    Kuldeep Singh

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    Kuldeep Singh Learner

    I assume you are talking about flexible (asphalt) pavements. Sacrification is needed when the cuts, potholes and all deformations are such that : The optimum moisture content required for proper binding can no longer be met. The filler material won't bend properly if just put judging by the conditioRead more

    I assume you are talking about flexible (asphalt) pavements. Sacrification is needed when the cuts, potholes and all deformations are such that :

    • The optimum moisture content required for proper binding can no longer be met.
    • The filler material won’t bend properly if just put judging by the condition of the pavement.
    • The peak daily traffic on the road, does not permit it to be safe without reconstruction.

    The entire bituminous layer until the depth of the craters is scraped off, and a new layer with fresh material is then applied to reconstruct the road.

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Neenu S K
Neenu S K

Neenu S K

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What is the Coefficient of Subgrade Reaction?

  1. nikeetasharma

    nikeetasharma

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    nikeetasharma Guru

    The coefficient of subgrade reaction is referred as the ratio between the pressure against the footing or mat and the settlement at a given point expressed as the coefficient of subgrade reaction which is defined as the ratio between the pressure against the footing or mat and the settlement at a giRead more

    The coefficient of subgrade reaction is referred as the ratio between the pressure against the footing or mat and the settlement at a given point expressed as the coefficient of subgrade reaction which is defined as the ratio between the pressure against the footing or mat and the settlement at a given point which is expressed as ;
    ks = q/S

    where,
    ks = coefficient of subgrade reaction
    q = pressure on the footing or mat at a given point
    S = settlement of the same point of the footing or mat in the corresponding unit of length

    i. The value of k is independent of the magnitude of pressure.
    ii. The value of s has the same value for every point on the surface of the footing.

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SNPH
SNPH

SNPH

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What is the mobilization & demobilization cost of any project, in percentage?

  1. Soumyadeep Halder

    Soumyadeep Halder

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    Mobilization and demobilization costs can vary greatly depending on the type of work being performed and what level of costs and logistics will be required to get the job rolling. So, there isn’t really one rule of thumb to follow on all projects. But, mobilization should represent the actual costsRead more

    Mobilization and demobilization costs can vary greatly depending on the type of work being performed and what level of costs and logistics will be required to get the job rolling. So, there isn’t really one rule of thumb to follow on all projects.

    But, mobilization should represent the actual costs of accumulating and coordinating all the necessary equipment, tools, materials, etc. – it shouldn’t typically be made up independently and without a sound basis. With that being said, mobilization costs tend to be under 10% and even as low as 2%. And as mentioned above, that should be pretty tightly tied to the actual costs of mobilizing and demobilizing the job.

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RaghavArora
RaghavArora

RaghavArora

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What is difference between GIS and GPS?

  1. Abbas Khan Civil Engineer

    Abbas Khan Civil Engineer

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    Abbas Khan Civil Engineer Learner

    GIS is the software used to find capture, store, manipulate, analyze, and present all types of geographical data. The main purpose is to share the geographic location and other details of a specific point on the earth. It has multiple application in our daily lives especially in construction sectorsRead more

    GIS is the software used to find capture, store, manipulate, analyze, and present all types of geographical data. The main purpose is to share the geographic location and other details of a specific point on the earth. It has multiple application in our daily lives especially in construction sectors, flood control e.t.c

     

    While GPS is a global navigation satellite system that gives us time, velocity, location, etc,. The main objective is the accuracy in Position on the earth.GPS works through a technique called trilateration, which collects information to output the information.

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Naif Alwadai
Naif Alwadai

Naif Alwadai

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What is the difference between Airport, Aerodrome and Airfield?

  1. desvl

    desvl

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    desvl VVIP

    Airport: A place often with multiple runways where commercial aircraft regularly take off and land usually based on a schedule, it has buildings for passengers flight management (Control tower) and services such as refueling, maintenance etc. An airport is normally a commercial enterprise. An AirfieRead more

    Airport: A place often with multiple runways where commercial aircraft regularly take off and land usually based on a schedule, it has buildings for passengers flight management (Control tower) and services such as refueling, maintenance etc. An airport is normally a commercial enterprise.

    An Airfield is on a much smaller scale usually non commercial and used for private or irregular charter flights minimal runways and limited services can also be military. minimal if any control.

    An Aerodrome is an old English word that has been replace with the word airfield so aerodrome and airfield are the same.

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Muhammad Ariful Islam
Muhammad Ariful Islam

Muhammad Ariful Islam

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What are the factors responsible for the deform of RCC road?

  1. nikeetasharma

    nikeetasharma

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    nikeetasharma Guru

    There are many factors which are responsible for the deformation of RCC roads ; -Shrinkage cracks - Damaged portion of rigid pavements - Durability cracks - Effect of pumping - Faults in rigid pavements - Uneven curing - Delaying in pavements

    There are many factors which are responsible for the deformation of RCC roads ;
    -Shrinkage cracks
    – Damaged portion of rigid pavements
    – Durability cracks
    – Effect of pumping
    – Faults in rigid pavements
    – Uneven curing
    – Delaying in pavements

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AdityaBhandakkar
AdityaBhandakkar

AdityaBhandakkar

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What is the difference between Highway and Airfield pavement?

  1. Vivek Patel

    Vivek Patel

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    Vivek Patel User

    Comparison of both is Highway pavement Cost is low. Less toughness compare to airfield. Design load is less. Less hardness compare to airfield. Compare to airfield, less construction cost and design cost. Length of Highway payment is very high. Airfield pavement Cost is high. High toughness need. DeRead more

    Comparison of both is

    Highway pavement

    • Cost is low.
    • Less toughness compare to airfield.
    • Design load is less.
    • Less hardness compare to airfield.
    • Compare to airfield, less construction cost and design cost.
    • Length of Highway payment is very high.

    Airfield pavement

    • Cost is high.
    • High toughness need.
    • Design load is very High
    • Need higher resistant to wear and tear due to aircraft trust.
    • Design cost and material cost is high due to rigid specifications and high level of construction practice.
    • Length of airfield pavement is less compare to Highway pavement.
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