Mohammad Nurunnabi

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সিভিল ইঞ্জিনিয়ারিং এর প্রাথমিক হিসাব নিকাশ

1. এক ঘনমিটার ইটের গাঁথুনীর কাজে প্রচলিত ইটের প্রয়োজন= ৪১০ টি। . 2. এক ঘনফুট ইটের গাঁথুনীর কাজে প্রচলিত ইটের প্রয়োজন=১১.৭৬=১২ টি . 3. এক ঘনমিটার ইটের গাঁথুনীর কাজে মেট্রিক ইটের প্রয়োজন= ৫০০ টি। . 4. এক ঘনফুট ইটের গাঁথুনীর কাজে মেট্রিক ইটের প্রয়োজন= ১৪.২৮ টি। . 5. এক বর্গমিটার জায়গায় একস্তর ইটের ফ্লাট সোলিং এর জন্য ইটের প্রয়োজন=৩১ টি। . 6. এক বর্গমিটার সোলিং এ চিকন বালির প্রয়োজন=০.০১৫ ঘনমিটার . 7. এক বর্গমিটার জায়গায় একস্তর ইটের হেরিং বোন বন্ডের জন্য ইটের প্রয়োজন=৫২ টি। . 8. এক বর্গমিটার হেরিং বোন বন্ডের জন্য চিকন বালির প্রয়োজন=০.০৩ ঘনমিটার . 9. ইটের গাঁথুনীর কাজে শুকনা মসল্লা এর পরিমাণ=৩৫% . 10. এক ঘনমিটার সিমেন্ট=৩০ ব্যাগ…. . 11. এক বর্গমিটার নীট সিমেন্ট ফিনিশিং এর জন্য(NCF) সিমেন্টের প্রয়োজন=২.৭-৩ কেজি . 12. ডিপিসি এ পাডলোর পরিমাণ সিমেন্টের ওজনের ৫% অর্থাৎ প্রতি ব্যাগ সিমেন্টের জন্য ২.৫ কেজি। . 13. এক ঘনমিটার এম,এস রডের ওজন =৭৮৫০ কেজি বা ৭৮.৫০ কুইন্টাল . 14. এক ব্যাগ সিমেন্টের ওজন=৫০ কেজি এবং আয়তন=০.০৩৪৭ ঘনমিটার . 15. এক ব্যাগ হোয়াইট সিমেন্টের ওজন=৪০ কেজি . 16. আবাসিক দালানের জন্য ব...

Eid Mubarak.

Eid Mubarak to all. May the blessings of ALLAH Keep your Heart & Home Happy & Joyous.

Civil Engineering Basic Knowledge :-

Cement's initial setting time should be 30 min(Minimum) and 90 min(maximum). Final setting time of cement should be=10 hours What type of test should perform for a road's improved subgrade sand filling: 1.FM of fine aggregates 2.California bearing ratio 3.Dynamic cone penetration test 4.MDD of fine aggregate 5.Field Dry Density. What type of test should perform for earth filling in Embankment with specified soil: 1.Plasticity index. What type of test should perform for Concrete Work: 1.Setting time of cement 2.Compressive strength of cement 3.Gradation of Coarse aggregates. 4.FM of fine aggregates. 5.Water absorption of coarse aggregates 6.Loss angels abrasion test 7.Concrete cylinder casting & testing What type of test should perform for M.S High strength deform bar 1.Tensile strength,Elongation and unit wt. What type of test should be perform for Brick work: 1.Setting time of cement 2.Compressive strength of cement 3.FM of fine aggregates 4.Compressive streng...

Difference between WSD and USD design Continue Reading Difference between WSD and USD design

WSD- WORKING STRESS DESIGN: Stress condition of structural member under working load is given attention. Full strength of material is not utilizd and is reduced by a factor. Stresses calculated are within the elastic limit. Is less economical than USD. USD- ULTIMATE STRESS DESIGN: Focuses on the strength capacity of the members at conditions corresponds to failure. Material properties are assessed and used in design. Loads are multiplied by a factor. More economical

What is the difference between working stress method and limit state method in the design of beams, slabs, columns, and footing with examples that are easy to understand?

The Working, Allowable or Permissible stress method is an elastic design method. In this design method, members are designed to never go beyond their elastic range. The primary benefit of this benefit is that the same loads used for checking flexural, shear, torsional and axial design can also be used for serviceability checks, ie. the loads are not amplified. This reduces book keeping efforts and removes one potential source of error introduction. In practice, this means it is simpler. Limit State or Load Resistance Factor design uses the ultimate strength of a member, beyond initial yielding, to determine the allowable strength. The primary benefit of the limit state design method is that it is generally produces more economical designs than Working Stress Methods, and it provides a more consistent safety factor across all elements. LRFD allows for more control and understanding of the structural behavior by explicitly considering each load type independently. In practice...

What is a TMT steel rod and what is the difference between HYSD and TMT bars? What are the pros of TMT bars over HYSD and mild steel?

TMT stands for Thermo Mechanically Treated. The TMT bars have a hard outer surface and a softer core. Their manufacturing process includes hot rolled steel wires passed through water. This makes the surface hard and keeps the core warmer and softer. This helps in making the steel corrosion resistance and also increase its weldability. Technically TMT means a type of quenching and tempering process and it would not be precise to call it a Thermal+Mechanical treatment. Because, even the HYSD bars are treated at high temperatures and then rolled and twisted for shaping and hence it is also thermally + mechanically treated. So the difference lies in the exact process of making these two types of bars and not just in their names. On the other hand, HYSD stands for High Yielding Strength Deformed bars. These bars have more yield strength than Mild Steel. Unlike TMT bars, HYSD bars are both hot or cold worked. They are graded as Fe 415 or Fe500. HYSD = Torsed/twisted steel (TOR Steel ...