Question { Dalkia, 18857 }

How to calculate the rating of airconditioner required in
any area,how to calculate the cfm required for any exhaust
unit or air washer unit.

Answer

I will explain you with an example : If 10 x10x 12 feet room means you can calculate C1 = 10x10x12 = 1200 BTU/Hr and Multiply the same with co efficient 6 = 7200 BTU/Hr. & If 2 person going to occupy the room means each person 500 BTU/hr. C2 = 2 persons x 500 BTU/hr = 1000 BTU/hr. (C1+C2) BTU = 8200 BTU/hr. 12000 BTU/hr = 1 Ton. Hence Upto 1200 BTU/hr we can go for 1 ton AC.

Question { 7118 }

is there zone 6 for earthquake in india?
on what basis the naming of the zones are done in variuos
countries?

Answer

As per Indian standard IS 1893- part 2, India has divided in to four diffrent zone as per force acting by earthquake. Zone 5 - Very high risk zone, Zone 4 - High risk zone, Zone 3 - Moderate zone Zone 2 - Low risk zone. Total percentage of land in India & intensity of earth quake : Zone II - 40.93% ( upto 4.9 ), Zone III- 30.79 % ( upto upto 6.9) , Zone IV - 17.49% ( upto 7.9) , Zone V- 10.79 ( 8 & more )

Question { Wonderla Holidays, 2873 }

what is the difference between TOR & TMT

Answer

1.TOR bars are coming under HYSD category and TOR is a brand name - Toristeg Steel Corporation of Luxembourg. TOR usually refers to cold treated bars.
2.TMT bars or Thermo Mechanically Treated bars are coming under HYSD category bars and manufactured by rolling steel wires and then passing them through water. TMT bars have a tough external layer and a soft core inside, which makes TMT bars corrosion –resistant and also increases their weldability.TMT refers to hot treated bars.
3.Round plain steel bars dominated the construction industry till seventies. Thereafter CTD (or TOR Steel) dominated the industry till nineties. Nowadays TMT or hot treated bars are the most popular due to its advantages over CTD (TOR) such as high strength and corrosion resistance

Question { 3746 }

how much weighs a square feet of slab of 5 inches thick

Answer

Weight per SQ ft of RCC slab 5 inch thickness will be 29.50 Kg ( .305 *.305*.127* 2500 ).

Question { 7735 }

minimum thickness of pcc 1;4;8 for road concrete

Answer

The minimum thickness of PCC 1:4:8 is 50 mm for RCC road works

Question { Mondol Group, 5228 }

how many cement in cubic feet of 40 kg bag white cement.

Answer

1Cum of cement is equal to 1440kg = 35.28 Cft. therefore 1 Cft = 1440/35.28 = 40.81 Kg.

SAY 1 Cft is in one bag of 40Kg white cement bag.

Question { Access Design, 2820 }

what is the lap length

Answer

Lap length is the length of the overlap of bar required to safely transfer stress from one bar. The lap length may vary based on the dia. of the rebar and design. In general for Columns 56 D, Beam & Slabs 50D we are giving during construction.