Q1) I am having an interview in a construction company for
a large sewage project . Since I have not done any such
project , there are some queries from my end. Pls. help me
to solve them. I will be thankful to you :-
a) Normally for large project 400-600 houses & around
1600 peoples , how much dia pipe is used and which type of
pipe is used?
b) For trenching , I have heard that IS 1200 implies,
what are the rules of calculating earthwork in case of
depth of 2m or above ?
c) To prevent soil to fall when depth of trench is
more , what steps are taken and how there qty. is
calculated . Like I have heard about timbering . what is
d) What are the rules for disposing off the excavated
e) How the pipes that are used are being jointed?
f) In case of cleaning on choks , is there any
intermediate things provided?
g) For foul gases any outlets are provided thru out
length of pipeline?
h) What is the flow digram like from houses thru small
pipe to main pipeline than where main pipeline disposes
i) Any other thing that has to be kept in mind while
calculating earth work for excavation like steps are made
and other things? How earthwork is calculated in case of
steps ? Pls. explain with a sketch.
1 building project (work in progress) and following are sum
detail about his project
1) Using local rebar grade 415
2) Total built up area- 60000 sq.ft
3) Floors to be constructed – 21 storey
4) Estimated requirement of Steel per sq. foot –
5) Concrete grade – M35
6) Rebars mainly required (sizes)- 16,20,25,32 & (8 mm
Wanted to ask u if this person uses 500D…what are the
benefits he will be getting? Whether his per Sq. foot
consumption can b reduce? If yes den around how much?