This is BBS ..dear !

Friends ,

The Structure of a building is in Reinforced Cement Concrete.

The steel bars provided in the concrete make it strong to carry the tensile forces.

Thses bars are called as REINFORCEMENT.

The detailing of these bars [ Diameter ,spacing,covers, laps , dowel lengths, development lengths and shapes } are provided by RCC designer and are specified in the RCC drawing.

The extract of the steel reinforcement in the form of a table is known as Bar bending Schedule. The tabulation of the reinforcement details can be conviniently done using the MS Excel.

Professional contracting firms have got printed formats for BBS ready for the use of their staff. The BBS is prepared by the Qauntity Surveyors during estimation . The BBS is also prepared by the Site Engineers for controlling the quality of the Reinforcement Bars at site. The BBS is also an excellent tool for recording the measurements of the Reinforcement bars at site and the BBS can also be used to submit the Bills for the Reinf..bars.

This is a chart which basically gives the micro details about the various bars. This gives the dia, shape of bar , cutting length of the various bars in a RCC element such as Footing, column , beam ,slab etc.

The site engineer prepares the BBS based on the drawing and after due verification , hands it over to the reinforcement fitter.

By the use of BBS , the weight of the Re-bars can be easily calculated.

Let me explain you this popular tool with an example.

Imagine , there is a beam of the following cross section.

190
CROSS SECTION OF A RCC BEAM

The details of the reinforcement have been tabulated in the following table :

200

The cutting lengths of each bar is calculated and tabulated as follows :

210

But you can see that many details are missing from this abstract. Hence , a better tabulation , known as the BBS has been prepared which gives each details of the Re-bar in a crystal clear method :

220

The bar bending gives a very clear picture of the reinforcement.

IMG_20160111_115748

आता भाषांतर सोपे झाले

Construction in Marathi

मित्र हो ,

एक मस्त बातमी आपल्याला आज देतो.

आता तुम्ही आपला इंग्लीश ब्लॉग देखील मराठी मध्ये वाचू शकाल.

कसे काय ?

आश्चर्य वाटले ना ऐकून ?

अगदी सोपे आहे .

आपण जेंव्हा आपल्या इंग्लीश ब्लॉग वर जाल ,

Basics Retold 

तेंव्हा तिथे उजव्या बाजूला  तुम्हाला ” भाषा निवडा ” असे लिहिलेले दिसेल.

100तिथे आपण ” मराठी ” किंवा ” हिंदी ” जर type केले तर ते पण आपणास त्या भाषेत दिसू लागेल.

अर्थात हे भाषांतर आपल्यास किती आवडते तो अलग प्रश्न आहे.

पण तुमची भाषेची अडचण मात्र नक्की दूर होईल असा विश्वास आहे.

आजच तिथे भेट द्या व हा प्रयोग नक्की करून बघा.

धन्यवाद.

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धन्यवाद मित्र हो !

Thank you so much for your prompt responses on the blog.
As desired by you people , let us continue with the Marathi blog.

Construction in Marathi

शुभ प्रभात ,

56

आपण मागचा लेख वाचलाच आहे .

62ज्यांनी नसेल वाचला ते इथे वाचू शकतात .

आज सर्वात आधी आपणा सर्वाचे आभार मानतो.

आपल्या पैकी अनेक जागरूक वाचकांनी आपले मत लगेच व्यक्त केले

आपल्या निवडक प्रतिक्रिया इथे देत आहे :

64605861

ह्या वरून मला हे लक्षात आले कि आपणा सर्वाना हा ब्लॉग सुरु राहावा असेच वाटते आहे.

त्यामुळे मलाही निर्णय घेणे सोपे झाले .

ठीक आहे .

आपली जशी इच्छा !

आता आज पासून आपण कामाला लागू या.

परत एकदा मना पासून धन्यवाद.

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Your own blog for On Line Courses!

Hello Friends ,

You have already been following this blog and hence you know about the On Line courses which we started since past 6 months.

Looking at the fantastic response to the On Line courses , we have recently started a dedicated blog for this .

You can get information at this link :

On Line Courses 

The work on this blog is in progress and you shall get complete information about the various On line courses on this blog latest by 30th June 2017.
Can you please let me know what specific information you would like to be available on this blog ?

What are the questions you have about the On line Courses ?

Please use this form and let me know your thoughts .

Thank you friends .

 

 

मराठी ब्लॉग बंद करावा का ?

मराठी ब्लॉग चे काय करावे ?
आपले विचार आवश्यक आहेत .

Construction in Marathi

मित्र हो ,

नमस्कार .

आपल्या बांधकाम क्षेत्रात काम करणाऱ्या लोकांसाठी आपण हा ब्लॉग सुरु केला . बरेच जणांना इंग्लीश भाषेची अडचण होते.

आजची हि परिस्थिती आहे :

अश्या सर्व व्यक्तींसाठी काम करायची माझी इच्छा होती [आणि अजूनही आहे.]

बरेच काही विचार मनात आहेत परंतु अनेक बाबीं  मुळे नेवीन काही लेख इथे लिहावयाला जमले नाही.

जसे हवे तसे ह्या वर अजून पर्यंत काही काम माझ्या हातून घडले नाही ह्याची खंत मला आहे.

ह्या आपल्या मराठी ब्लॉग चे काय करावे ?

बंद करावा कि सुरु ठेवावा ?

आता माझ्या समोर असे दोनच पर्याय आहेत.

  1. हा ब्लॉग बंद करून टाकावा व फक्त इंग्लीश ब्लॉग वरच काम करावे का ? कारण बंद करणे अतिशय सोपे आहे.                            एका मिनिटात बंद कर्ता येईल. परंतु ज्या २८ जणांनी  ह्या ब्लॉग ला follow केलेले आहे त्यांच्या वर अन्याय होईल असे मला वाटते.
  2. हा मराठी…

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Thank you so much…. for the feedback

Hello Friends ,

Good afternoon.

Long time we have not done any introspection . Right ?

Do you know that these page views , 270079 , represent viewers of 188  countries ?

This is the paero chart for your quick view :

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The entire list of 188 countries is so long that it shall be difficult to view it in a single glance. ]

Some time back , we had requested the viewers to take a survey about various features of this blog. The results are very encouraging .

Thank you so much for taking out your precious time and giving us the feed back about the blog.

Thought , you would like to know about the survey results.

Let me present you the survey report here :

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1

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Thank you so much once again and let me assure that we shall always ensure that this blog  shall always help you towards achieving your goals in your career.

Bye Bye

 

 

Footings : Levelling Course & Water Logging :

Dear Friends ,

Let us solve the query of one of the readers today.

This is the query :

1

In fact , there are two queries here :

  1. When do we use Plain Concrete in a footing ?
  2. Ground Water seepage during excavation ?

Let us solve these queries one by one.

First query is about the Plain cement Concrete .

Please have a look at the section of the Footing as given in the RCC drawing :

The PCC is marked here with Red :

14

Now have a look at the base of a pit . This is how the surface shall be at the base of the excavation :

8

It shall be very clumsy to lay the rebars on such a muddy surface. Right ? Thats why we provide a certain thickness of plain cement concrete here . This concrete is also known as the ” LEVELLING COURSE “.

So the Levelling course is a layer of Plain cement concrete which is given so that we get a good working surface for laying the footing properly. 

Now have a look at the leveling course laid on a site :

12

Next step is to lay the Rebars of the Footings :

15

Parallely , the shuttering for the footing is also fixed on the Levelling course.

13

Now we do casting of the Footing so that it becomes the RCC footing .

16

Hope the first query is clarified.

Now second query pertains to the Water logging during excavation.

You can have a condition like this on the site :

9

So what do we do in such a case ?

Simple.

We have dewatering pumps and take out the water before laying the Levelling course :

10

There might be a case like this also :

6

So now , may be we shall have to wait for a dry spell so that this water either gets absorbed in the soil below or is evaporated.

In a situation , when the excavated pit is not completely dried, it shall not be possible to lay the plain cement concrete in the mud.

What do we do then ?

In such a case , we shall have to do Boulder solling so that we get a good ,

solid working surface .

Look at the stake of Boulders which are also known as Rubble or Stone :

17

These boulders , when laid in the base of a pit , shall look like this :

18

After this , the levelling course is laid in plain cement concrete. This is followed by the RCC footing.

Hope both the queries are clarified now.

Thank you for asking the queries .

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SANTOSH KULKARNI

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