what is the required cover for sewer & Storm upvc pipes, in different area according to ASTM or BS standard?
546955
I refer you to ASCE for technical papers regarding the subject; also the pipe sales engineer should have this information readily available to you. If you are a student, contacting a sales engineer personally would be a great real world experience. Find several upvc pipe companies on the net and locate their regional sales engineers.
226804
Go to www.osha.gov and you should be able to find your answers there.
387436
Check with a local disaster recovery company. They can tell you the names of who does the really dirty work.
334522
go to www.osha.gov and type water in the search your answer might be in the standard interpretation section.
152308
Without more information; such as the size of the job and what type of trenching. I can only give you two words; TIME & MATERIALS
864404
It would not be OSHA.  It would be EPA or your state equivalent.  The only way to find out, is to call the office in your state.  See the references for a list.
745491
the quickest way to figure it out i think would be to call a fitting/valve supply house and ask them. the BSI standard you reference deals with manufacturing. i have found some ISO sets that govern this and some API but im not in India and have yet to build anything in that country so i doubt these will help. unless India uses American Petroleum Industry standards.
149815
The only organizational standard for SCC that i'm completely aware of is from the Precast/Prestressed Concrete Institute and it was an interim standard.  It describes the testing methods as well as some other suggestions.  Below is a link to the Adobe Acrobat file.
249584
u can find ur specification at \n\nwww.ambion.com
565548
Right here:\n\nhttp://www.phila.gov/li/codes/PlumbingCode.pdf\n\nHappy reading.
851740
The standard is available from ASTME for $55 US.  Depending on what you are looking for, the second or third reference may be of some help.  The last reference is the result of my search for the standard on Yahoo!
974254
Construction & Use Regulations.
1116381
ASHRAE is the organization that publishes the standards by which heating equipment is sized and vented.  They charge for their publications however.\n\nTalk with a reputable boiler manufacturer like Paterson Kelly or Hydrotherm and they will probably give you some guidelines for no charge.
438539
You should find that under the ASTM Manual for steel. Your engineering department should have a copy, otherwise try finding it on line.
44330
Normally it is just that you have standards A-Z of the same type (the 105).  I don't think they have any other meaning.  Contact them, www.astm.org.
534120
Try searching on http://Americanplasticscouncil.org\nOr on http://www.HDPE.com
251187
Common Insulation Designations:\nT = Thermoplastic Insulation Covering \nR = Rubber Insulation Covering\nN = Nylon Jacket \nX = Cross Linked Synthetic Polymer\nH = Heat Resistant to 75 degrees C \nHH = Heat Resistance to 90 degrees C\nW = For Use in Wet Locations \nSE = Service Entrance Cable\nU = Approved for direct burial underground \nUSE = Underground Service Entrance Cable\nUF = Underground Feeder Cable\n\nThis means that your wire would be \n1. Thermoplastic Insulation Covering\n2. Heat Resistant to 90C\n3. Suitable for wet locations