A. DULAY Architectural & Engineering Services

06/05/2026

05/05/2026

Thinking of firewall alternative!

27/04/2026

Which one is correct?

27/04/2026

Slab Crank Bars

27/04/2026

Do you know that the mechanism in a soil's response is largely dictated by its grain size and permeability. When discussing how different soil types respond to loads, we have to look at the internal soil-mechanics—how particles rearrange, how water moves, and how friction is generated.

Clay soil can be prone to long-term settlement. It may take years for a building on clay to finish settling as the water slowly escapes and the clay particles finally move closer together.

Sandy soil transferred load immediately through the points where the grains touches and they share in failure, depends on the density, if the density is high, the grains "interlock" and provide high strength.

Silt is the "middle child"—finer than sand but coarser than clay. It is often very sensitive to moisture. It gives rapid and unstable settlement, Silt Soil lacks the frictional strength unlike Sand.

Gravel is composed of large, bulky rock fragments. Its a high bearing capacity and negligible settlement. Gravel is the ideal foundation material because it drains perfectly and the "skeleton" of the stones supports the load with very little deformation.

Organic matter is soil made of decaying plant matter and has very high water content. This is the material Civil Engineers dislikes because it gives an extremely unpredictable settlement reaction . Organic soils are the most challenging for engineering; they can compress to a fraction of their original volume and will continue to settle for decades as the organic matter decomposes.

13/04/2026

Cantilever Beam Reinforcement – Correct vs Incorrect
1. Structural Behavior of Cantilever Beams
- A cantilever beam is fixed at one end and free at the other.
- When loaded, the top fibers of the beam experience tension, while the bottom fibers experience compression.
- Reinforcement must always be placed where tensile stresses occur, since concrete is weak in tension but strong in compression.
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2. Incorrect Reinforcement Placement (X INCORRECTO)
- Steel placed at the bottom:
- This is suitable for simply supported beams, not cantilevers.
- In a cantilever, the bottom is under compression, so reinforcement here is ineffective.
- Result:
- Tension cracks appear at the top surface.
- Structural failure risk increases.
- Beam cannot safely carry the intended load.
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3. Correct Reinforcement Placement (✓ CORRECT)
- Steel placed at the top:
- Matches the tension zone in cantilever beams.
- Reinforcement resists tensile stresses effectively.
- Result:
- No tension cracks at the top.
- Beam remains structurally sound.
- Proper load transfer and durability ensured.
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4. Key Engineering Notes
- Rule of Thumb: Reinforcement must always be placed in the tension zone of a beam.
- Cantilever beams → Reinforcement at the top.
- Simply supported beams → Reinforcement at the bottom.
- Proper detailing prevents cracks, ensures safety, and extends service life.
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5. Practical Applications
- Used in balconies, projections, canopies, and bridges.
- Correct reinforcement placement is critical for:
- Safety (avoiding collapse).
- Economy (preventing costly repairs).
- Durability (resisting environmental effects).

27/03/2026

Ayos!

26/03/2026

Done with Beam rebar Works!

Sobrang dami at sinsin ng mga bakal.

Salamat mga tropa at nagawa nyo ito ng maganda at tama!

17/03/2026

Concrete Mixed and its equivalent strength!

14/03/2026

Impoto of correct cement mixed