Building Maintance and social knowledge

Any material that we use in building construction has some properties like density,specific gravity, its unit of   measurement(   https://www.engineer-time.com/2018/12/unit-conversion-metric-system.html?m=1 )  and their mixing ratio etc. we will discuss them in the tables given below :-   Density   It is   defined  as the   ratio  of mass and volume is called density. It is measures in kg/m 3.   In below table we will discuss density of some building materials. The symbol of density is row (p) Density of various building materials S.NO Name of material Density in kg/m 3 1. CEMENT 1440 2. LIME 640 3. CONCRETE(P.C.C) 2400 4. CONCRETE (R.C.C) 2500 5. STEEL 7850 6. BRICK 1500-1800 7. ASPHALT 721 8. LEAD 11400 9. COPPER 8950 10. IRON 7850 11. GLASS 2580 1...

As we are already discussed about metric system . Below table shows, how can we convert some basic commonly used units. Topic 1 Area and volume conversion  convert the units of Area 1 m 2 10.76 ft 2 1 m 2 1.2 yd 2 1 ft 2 0.09 m 2 1 yd 2 0.84 m 2 1 hectare 2.47 acres        2. Convert the units of Volume 1 m 3 35.31 ft 3 1 m 3 1.30 yd 3 1 ft 3 0.03 m 3 1 yd 3 o.76 m 3 *1 acre = 4046.856  m 2 Note :- Standard Prefixes (Red Colour indicates power is negative) Multiple Prefix Symbol 10 18 exa E 10 15 peta P 10 12 tera T 10 9 giga G 10 6 mega M 10 3 kilo k 10 2 hecto h 10 1 daca da 10 1 deci d 10 2 centi c 10 3 milli m 10 6 micro mu 10 9 nano n 10 12 pi...

Water After air, water is the most essential commodity for the continuation of life.It has been estimated that two third of human body is constituted of water. Water cycle Evaporation of water take place due to sun heat converting into clouds which under favorably condition causes precipitation and those the rain water flow into lakes, river.Then to see such a cycle of evaporation and precipitation is known as water cycle. Sources of water Various sources of water available on the earth can be classified into the following two categories:- Surface sources: Ponds and lakes Streams and rivers Storage reservoirs,impounding reservoir Ocean, generally not used for water supply at present.       2. Sub-surface sources or underground sources: Spring  Infiltration galleries  Infiltration Wells  Wells and tube-wells Quality of water  An absolutely pure water is not recommended for women health as thi...

Metric System The metric system is a system of weight and measure which was first adopted by France. The greater part of the population in the world works on the metric system.The metric system is so called because it use the 'metre' as the primary units. In metric system there are three principal or primary units metre litre Kilogram Basic Standards :-  1 inch   = 25.5 mm.  =2.54 cm. 1 metre  = 39.37 inch   = 1.09 yards 1 litre = 1000 ml.  = 0.22 galls. (gallons) 1 pound = 0.4536 kg      The following fundamental standards or units are used in metric system ;----- length                     metre mass                       kilogram or gram volume                   litre force          ...

Masonry is an assemblage of masonry unit like bricks, blocks of stones, which are bonded together with mortar. Masonry can be a load bearing, non load bearing, architectural or a retaining structure.  Important term used in Masonry Stone:- It is a natural occurring materials widely used over the years for construction. some of the varieties of stone used for construction are:- Granite Limestone Laterite  slate  Sandstone Block :- It is an artificial masonry unit manufactured by moulding concrete to a fixed size and curing it to attain a specific design strength. Brick:- It is an artificial masonry unit manufacturer using appropriate earth mix with water in a fixed proportion moulded into suitable size and fired in a kiln to attain strength. Mortar :- It is a binding material comprising of cement materials and sand.Mortar are generally identified by the ratio of the volume of cementing material to the volume of sand.The ...