If the length of effective span is 12 m in R.C.C. Lintels, then thickn...
The thickness of an R.C.C. lintel is determined based on various factors such as the span length, loadings, and the type of construction. In this case, the effective span of the R.C.C. lintel is given as 12 m. To determine the suitable thickness of the lintel, we need to consider the provisions provided by the relevant design codes and standards.
**Design Codes and Standards:**
In the case of R.C.C. lintels, the design is generally based on the provisions provided by the relevant code of practice, which may vary depending on the country. For example, in India, the design of R.C.C. structures is commonly carried out using the guidelines provided by the Indian Standards (IS) code, such as IS 456:2000.
**Span-to-Depth Ratio:**
One of the key factors in determining the thickness of an R.C.C. lintel is the span-to-depth ratio. The span-to-depth ratio is the ratio of the effective span of the lintel to its overall depth. This ratio helps in ensuring the structural efficiency and load-carrying capacity of the lintel.
**Recommended Span-to-Depth Ratio:**
The recommended span-to-depth ratio for R.C.C. lintels is generally provided by the design code. For example, as per IS 456:2000, the recommended span-to-depth ratio for simply supported lintels is 20. This means that the depth of the lintel should be approximately 1/20th of the effective span.
**Calculation of Thickness:**
To calculate the thickness of the R.C.C. lintel, we can use the following formula:
Thickness = Effective Span / Span-to-Depth Ratio
In this case, the effective span is given as 12 m and the span-to-depth ratio is recommended as 20. Plugging in these values into the formula, we get:
Thickness = 12 m / 20
Thickness = 0.6 m
Thus, the thickness of the R.C.C. lintel would be approximately 0.6 meters or 600 mm.
**Conclusion:**
Based on the given effective span of 12 m and considering the recommended span-to-depth ratio of 20, the suitable thickness for the R.C.C. lintel would be 0.6 meters or 600 mm. It is important to note that this thickness may vary depending on the specific design requirements, loadings, and code provisions applicable in a particular region. Therefore, it is advisable to consult the relevant design codes and seek professional advice to ensure the lintel is appropriately designed for the given situation.