Civil Engineering Site Knowledge 👷

Civil Engineering Site Knowledge 👷

2/9/2025, 9:33:50 PM

👉 *3_4_5 Method* : The 3-4-5 method is a technique used in civil engineering to ensure that a corner of a building or a structure is square. It involves measuring the lengths of three sides of a triangle formed by the corner, with the sides being 3, 4, and 5 units long. If the measurements are correct, the corner is square.

Civil Engineering Site Knowledge 👷

2/9/2025, 9:37:49 PM

👉 *Hand Mixing of Concrete* : • When hand mixing concrete, it's common to add a bit more cement to account for potential losses during the mixing process. Typically, an extra *5-10* % of cement is added to the mix to ensure the desired strength and quality.

Civil Engineering Site Knowledge 👷

2/9/2025, 9:43:36 PM

👉 *Cold Weather Concreting* : [ 5 to 15°C ] Concreting at freezing point requires special precautions to prevent freezing of the concrete, which can cause damage and reduce its strength. • using insulated forms, heated water, and accelerators to speed up the setting process. • applying a layer of insulation or thermal blankets to the concrete surface can help retain heat and prevent freezing. • using anti-freeze admixtures or other specialized products designed for cold-weather concreting