Rukn Al Zamard Technical Contractor

19/03/2026

رکن الزمرد تتمنّى لكم ولعائلاتكم #عيدفطر مباركاً. الله عليكم وعلينا بالخير والبركة

02/12/2025

30/10/2025

✅️ Basic Important Points for Civil Site Engineers & Supervisors

🔴Read till end, bonus tip inside…

Main Points ✅

1) Parapet wall height = 1 m
👉 For roof edge safety.
✔️ Go higher if kids/public access.

2) DPC thickness = 2.5 cm (≈ 1 inch)
👉 Stops ground moisture climbing up.
✔️ Keep DPC continuous at doors & walls.

3) Typical floor-to-floor height ≈ 3.15 m
👉 Gives clear headroom + slab + services.
✔️ Check drawings; some projects vary.

4) Window sill/ head height ≈ 2.10 m
👉 Comfortable eye view & door head match.
✔️ Keep same line across rooms for clean look.

5) 1 cement bag volume ≈ 1 ft³ (≈ 0.0347 m³)
👉 Good for quick mix calculations on site.
✔️ Don’t forget bulking of sand when wet.

6) Weight of one cement bag = 50 kg
👉 Store on pallets, dry place, first-in first-out.
✔️ If lumpy/hard—don’t use, it’s gone.

7) Min slab thickness = 125 mm
👉 Helps deflection control for normal spans.
✔️ Long spans or heavy load may need more.

😎 Cement bags in 1 m³ concrete ≈ 8 bags
👉 Rough thumb rule only.
✔️ Always follow mix design if available.

9) Lintel thickness ≥ 150 mm (min)
👉 Carries brick load over openings.
✔️ Provide proper bearing at both ends.

10) Lintel level in brick wall ≈ 2.4 m
👉 Sits above standard doors & windows.
✔️ Keep same level to avoid ugly steps.

11) Min rebar dia in columns = 12 mm
👉 Thinner bars buckle easy, so don’t.
✔️ Tie spacing & cover as per drawing.

12) Min rebar dia in slabs = 8 mm
👉 Good for distribution & temp steel.
✔️ Spacing controls cracks—don’t go wide.

13) Min dowel bar dia = 12 mm
👉 For joints/connecting new & old concrete.
✔️ Provide proper embed length (development).

14) Max bar dia in slab ≤ (slab thickness ÷ 😎
👉 Big bars in thin slab = bad anchorage.
✔️ Better use more smaller bars than few big.

15) Max chair spacing = 1 m
👉 Holds mesh at correct cover height.
✔️ Add extra chairs near edges & at steps.

05/10/2025

Subject:- 🏗️what is formwork? Difference between Shuttering, Centering and Staging.

Formwork, Shuttering, Centering and staging these are temporary structures which are used on site for specific purposes . Today in this article, I am going to discuss followings

✅🏗️ Formwork:-
🔹Formwork is a temporary structure which is used as a mould to pour the concrete. Formwork may be the horizontal or vertical arrangement, made to keep concrete in position until it gains desired strength and shape.

✅ 🏗️ Shuttering:-
🔹 Shuttering is a part of form work. it is a vertical temporary which is used to bring concrete in desired shape. Vertical formwork is known as shuttering. Formwork for the column, retaining wall, footings, Side Beams are known as shuttering.

✅🏗️ Centering:-
🔹 Centering is a part of formwork. it is used to support the horizontal members like Slabs. Formwork for slabs and bottom of Beams known as Centre

✅🏗️ Staging:-
🔹 Staging is a Temporary structure which is used to support formwork either it may be for Centering or shuttering. Staging is done by using props, jacks, H frames, cup lock system, wooden bullies.

you can see in the picture, you will understand better

06/08/2025

05/06/2025

Eid Al Adhaa Mubarik

Eid Al Adhaa Mubarik

29/03/2025

رکن الزمرد تتمنّى لكم ولعائلاتكم #عيدفطر مباركاً. الله عليكم وعلينا بالخير والبركة






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12/02/2025

01/12/2024

United Arab Emirates Celebration 53
National day
2 December 2024

15/06/2024

Eid Al Adhaa Mubarik