Building Maintance and social knowledge

                                       Part Of Building

Cement :-   Cement is a binding material made by wet and dry process mixed with water and aggregates  to form mortar and concrete.     Adhesive  is a Bonding material. Adhesive is used to fixed tiles on various substrata.

RCC slab Plane structural members which are used as floor and roof covering in a building. The thickness of the slabs looking is quite small as compared to other dimensions. Classification of the slab:-  On the basis of the ratio of longer span to shorter span. RCC slab classified into the following two types  One- way slab  Two-way slab One way slab:-  The slab in which the ratio of   (Ly/Lx) longer span to short span   is greater than or equal to 2 are called one-way slabs. These slabs are also called edge supported slabs Slab supported on four edges also behaves as one-way slab if the ratio of longer span to shorter span is greater than or equal to 2. In these slabs bending take place only along the shortest span. Therefore, the main reinforcement is provided along the shorter span and distribution Steel is provided along with the largest span. Reinforcement in one way slab:-  Main reinforcement:- Reinforcement is provided parallel to the shorter

Fifth Generation 5G will provide speed work on the internet as well as  provide reliable communication.5G means fifth generation. Most of the people are using 3G/4G network today.If 5G has lot of advantage in the world then there are some disadvantages:- Advantage of 5G :- Due to 5G, there will be a lot of help in medical treatment. Increase accuracy while talking on social networking.example watch video with no delay or glitches. Increase speed by 10 times in comparison of 4G, which will make easy to download the data in shortest time. Increase the accuracy of GPS. This will also help us in education,we can offer online classes from other countries. Possibility of visualisation of universe,planets and galaxies is possible. Natural disaster can be detected speedly. Easy to control your personal computer with cell phone. We can increase security and privacy. We can use 5G technology in weapons. Disadvantage of 5G :- Reduced the Br

Numbers Number system is the most important tools in the world used to count,labeling,sequencing and coding and measuring purpose. Types of Number system Natural Number :-   Numbers that can be counted are called Natural numbers like 1,2,3,4,5,6................                                                                                                 Whole Number :-   Numbers that can be counted together with zero are called whole number. Example:-0,1,2,3,4,5..............                                                                                                        Even Number :- Even Numbers are the Numbers which are divided by 2 are called even number.Example 2,4,6,8,10,12................                                                                                                              Odd Number :-   Odd Numbers are the Numbers which are not divided by 2 are called Odd numbers. Example:-1,3,5,7,9,11.......                 

Concrete  After   water , concrete is the most used thing in the world. The mixer of cement ,water and coarse aggregate is called   Concrete . Properties of concrete:- Concrete is divided into two stages:- Plastic stage Hardened stage Plastic stage   :-The time duration when concrete begins to take their original shape after the removal of   stress or strain . At the time of plastic stage concrete should have:- Good   workability Freedom from   segregation freedom from   bleeding  2 .Hardened stage :-The time duration when concrete fails to take their original shape after the removal of   stress or strain . Properties of concrete in hardened stage:- Strength Durability Impermeability Dimensional change Strength :-        (1) Compressive strength :-         1.For road & Bridge -20 to 40 N/mm2.        2. 20 N/mm2 for building        3. 60 N/mm2 for nuclear construction              (2) Tensile strength :-  

CEMENT Cement is a binding material mixed with water and aggregate to form concrete or mortar.The mixture of cement and water is called   Cement paste ..The mixture of cement,water and fine aggregate is called   mortar .The mixture of cement,water,fine and coarse aggregate is called   Concrete   or the mortar fill the voids in the presence of coarse aggregate is called   Concrete . Testing of Cement :- OPC & PPC Field test Laboratory test 1. Field test:- Take a look at cement paste, there should not be visible lump. Colour of cement should normally be greenish grey. It should give a cool feeling,when we put hand into the cement bag. Take a pinch of cement bag, it should give a smooth feeling. feel not oily when touched. Take a handful of cement and throw it on a bucket of full of water, the particle should float for some times before they sink. 2.Laboratory test:- Test of OPC: 33,43 and 53 grade  Ordinary Portland Cement- As per BIS  Ordinary Port