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  • Users: emanc
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  1. emanc

    Steel Pipe laying

    We are in south east asia. Contractor intends to use somewhat like a roller skateboard where worker can slide himself inside the pipe. We already rejected this methodlogy due to safety issues, we are looking at automated method, bimr, have you done any automated lining method before? the lining...
  2. emanc

    Steel Pipe laying

    The project is extension of municipal water supply system, water willbe drawn from a lower level reservoire then pumped to a resrvoire about 130meter at higher level through the transmission line. Water supply will then be distributed by gravity.
  3. emanc

    Steel Pipe laying

    The project involves installation of about 5 km steel pipe transmission line and about 7 km HDPE main distribution line. Contractor proposed full penetration butt weld joints for steel pipes. We have another issue on lining of weld joints inside pipe as the contr proposed manual application of...
  4. emanc

    Steel Pipe laying

    Thanks guys for your usefull inputs, BigInch thanks for the pictures.
  5. emanc

    Steel Pipe laying

    Is it proper method to lay steel pipes (500mm dia. x 9m long) by pre-fitting up every 2 pipes at ground level then lift and place into pipe trench then full weld. What are advantages and disdavantages. Any opinion would be very much appreciated. Is laying 1 pipe at a time better than 2 pipes.?
  6. emanc

    Water cement ratio

    I am reviewing a proposed concrete design mix, 'would like to inquire if there is any mention of minimum water cement ratio of 0.40 in ACI code, and what is the difference between w/c ratio per ACI and the adjusted w/c ratio in the design mix? 'appreciate any clarification on this.
  7. emanc

    Food Grade Fiber Reinforcement Material

    We are currently studying strengthening of reinforced concrete tanks in a filtration plant and we are looking for food-grade fiber reinforcement material. Any info on where we can source out this material will be appreciated.
  8. emanc

    Stone ceiling connection

    I am looking for standard detail of installing stone or marble ceiling. Appreciate if someone can provide standard detail or description of connection. Marble ceilinh finish will be attached to concrete beam or slab.
  9. emanc

    Screw piles

    thanks for your useful info, we might also a have a problem on finding several contractors who can do screwpiling but 2 or 3 bidders will make the bidding successful. We are considering this as alternative to micropiling, this method is clean and will not generate too much water/mud coming out...
  10. emanc

    Screw piles

    I want to inquire about this piling method and would appreciate any helpful info on screw piling. How do you design a screw pile, can it resist compressive force even in sandy or very loose gravel soil profile? I noticed on some websites that these piles are used for lighthouse, what type of...
  11. emanc

    Uncoated steel concrete anchor bolt corrosion problem

    try asphalt coating, it is suitable for corrosive environment, just remove it later.
  12. emanc

    repair of foundation

    for strengthening of small footing roughening, of old concrete is enough but for large foundation we always use bonding agent.
  13. emanc

    Capping on cylinders

    msucog- both labs are independent, they are not the ones taking samples but the concrete supplier.
  14. emanc

    Choosing between environmental eng. and structural eng. for my career

    bmwater- When I was in college, I worked part time as draftsman for a one man civil/env consultant. My boss designed water water and sewage treatment plants. He calculates BOD, COD area required, volume of tanks, specify equipments, design pipings and finally he is also the one designing the...
  15. emanc

    Capping on cylinders

    msucog- It so happened that the day we have to break cylinders lab 1 techs are apparently not available so we have to go to lab 2 wherein we dont usually go to break our samples. The following day I required the contractor to break another sample from the same pour to lab 1 as I was not...
  16. emanc

    Capping on cylinders

    example is: for a 4000 psi design, lab 1 result is 4300 psi while lab 2 gets 3600 psi.
  17. emanc

    repair of foundation

    Swelm- Your procedure is ok, though I suggest you also apply concrete bonding agent to old footing surface right before pouring new concrete. This is to bind old concrete with new concrete and act as one.
  18. emanc

    Career Advice Please - Highrise Buildings

    Hg- I am into construction projects inside an existing cement plant. The compound is very wide and lots of people wandering inside the plant, contractors, operators and other plant personnels and also visitors. It is our standard safety procedure to enclose the lifting area with red plastic tape...
  19. emanc

    Capping on cylinders

    Both labs are certified by dept of public works, im not sure of the technicians. Anyway lab 2 technicians already said they dont know how to apply sulfur caps so we will go back to lab 1, we've been using lab 1 for some time and so far we did not have any problems with the structures they have...
  20. emanc

    Capping on cylinders

    Cylinders in lab 1 tends to shear almost parallel to cylinder length and samples appears like bulging, while in lab 2 cylinders break on top corners of the samples which indicates sample is not being axially crushed. We will apply sulfur capping in lab 2 and see what the results will be, though...

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