Eng Rop N.

A loyal Arsenal fan. A Civil Engineer, who builds lasting foundations and shapes communities. Fearless and determined, he lives with purpose and passion.

[Eng Rop N. @Wolf5396]

Cabro installation and IBDs

[Eng Rop N. @Wolf5396]

@athleteKenya fb

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@Kingsholz Yes

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@kuria254k fb

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@MaxonAiro Fast payout

[Eng Rop N. @Wolf5396]

@mundu_useful Contract time is that period a project is required to be completed while contract period is that duration a contract is effective to its completion or termin6

[Eng Rop N. @Wolf5396]

@MeranSays I thought i was alone. It's disgusting to me so much

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It's 7:30pm. Follow i fb asap

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@Ssemaganda75319 fb

[Eng Rop N. @Wolf5396]

✅️✅️

[Abdulrahman @bearded_Abdul]

@mundu_useful Advice is the Noun- the points to be considered.
Advise- is the act of giving those points to be considered.

[Eng Rop N. @Wolf5396]

Ykb

[Baba Ramilah ❁ @HeemMufc]

I swear Qatar was better

[Baba Ramilah ❁ @HeemMufc]

I swear Qatar was better

[Eng Rop N. @Wolf5396]

@Mmust_iconn A great one too

[Eng Rop N. @Wolf5396]

@Kibet_bull Good morning master

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@CertifiedKamau @flyaiko78 @Wolf5396 fb

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@mansang29 Chamgei boset

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@BarcaUniversal Pedriiiiiiiii

[Eng Rop N. @Wolf5396]

Well put ✅️✅️

[Hamerkop Builders ™ @HamerkopBLDRS]

When engineers are designing contemporary structures, they begin by selecting a concrete grade like C 25/30, C 30/37 or C 40/50 depending on the strength requirements of the structures.

These grades come in two standard tests of the SAME CONCRETE. The CYLINDER TEST and the CUBE TEST.
i.e....
In C 30/37..., 30 mpa is the CYLINDER STRENGTH used for STRUCTURAL DESIGN and 37 mpa is the CUBE STRENGTH used FOR SITE TESTING.

Cylinder - structural designing
Cube - Site testing

The cylinder test provides the MAIN DESIGN STRENGTH because it represents how CONCRETE BEHAVES IN REAL STRUCTURAL MEMBERS like columns or bridge piers while the cube test typically gives a higher strength value and is mainly used on site TO VERIFY THAT THE CONCRETE had been PROPERLY BATCHED and MIXED.

So, the cylinder test involves crushing a 150 mm × 300 mm CONCRETE CYLINDER in a compression machine to determine its compressive strength (Fck). It is used in STRUCTURAL DESIGN because it reflects the ACTUAL WORKING BEHAVIOR OF CONCRETE UNDER LOAD.
On the other hand, the CUBE TEST uses a 150 mm × 150 mm × 150 mm specimen which usually records a higher strength due to greater confinement during testing and this value is used ON SITE FOR QUALITY CONTROL to confirm that the supplied concrete MEETS THE SPECIFIED GRADE.

💡 Though there is a DIFFERENCE in compressive strength results, the samples (cylindrical and cuboid) are from the SAME CONCRETE MIX

Once the concrete grade is selected, engineers then use it to determine the size of structural elements such as columns, bridge piers........
Higher concrete strength/grade allows for smaller and more efficient sections and can reduce the amount of reinforcement required while lower strength/grade concrete requires larger sections to safely carry the same load.

You will realize that a STANDARD CYLINDER MOULDS of 150 × 300mm has a larger volume than a cuboid one of 150 × 150 × 150mm.
Meaning, the cylinder contains 5.30mm³ of concrete while the cube contains 3.38mm³, making a cylinder 57% more in volume.

This percentage difference has no influence on strength or design coz the difference in test results between cubes and cylinders is not due to volume but due to GEOMETRY and CONFINEMENT during loading coz cubes are MORE RESTRAINED and show higher strength while cylinders experience LESS CONFINEMENT but meant to give a MORE REALISTIC REPRESENTATION of CONCRETE BEHAVIOR IN REAL STRUCTURAL ELEMENTS.

[Eng Rop N. @Wolf5396]

@_mbithee Fb

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[Eng Rop N. @Wolf5396]

@kamauwaruhiu 🤣