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👉Kicker

💫The small concrete step used at the bottom of walls or columns, a column kicker's main job is to make sure that the coordinates are maintained between floor slabs.

🚧Column kickers are only used at the position where walls and columns are constructed.

@etconp

👉What Is The Difference Between Bridge And Culvert

💫A bridge and a culvert are both structures used to cross obstacles like waterways, but they differ in size, purpose, and construction. A bridge is a larger structure that spans over an obstacle, allowing traffic to pass above it.

A culvert is a smaller, often tunnel-like structure that allows water or traffic to pass under a road or other obstruction. Essentially, a bridge carries traffic over, while a culvert carries traffic and water under.

🏷What is a Culvert

⏺A culvert is a man made tunnel-like structure that carries a stream under a railway or road. When compared to a bridge, its structure is quite simple, and its key components include concrete boxes or cells, a slab or a top deck,  pipes, and other supporting parts.

⏺A culvert is most frequently embedded in the soil and supports a huge portion of the culvert load. It is usually built as an enclosed structure. It may come in rectangular, semi-circular, pear, or elliptical shapes. A culvert can also be an enveloping structure that comes with two sides, a floor, and a roof.
⏺A culvert is usually around 6 meters in length. Unlike a bridge, a culvert does not require a deep foundation. It is generally built at a height of less than 20 feet over a particular obstruction. Culverts can either be built on the site or pre-constructed and shifted. Most significantly, its simple structure and design have made it possible to construct culverts with less labor in a relatively lesser time period.

📍The purpose of constructing a culvert is mainly to facilitate roadways both over and under the deck. A culvert is generally built to facilitate the flow of water through channels or tunnels under a roadway or a railway. Therefore a culvert is a reliable solution to prevent floods, waterlogging, and erosion.

🏷What is a Bridge

⏺A bridge is a passage we use for transportation. A bridge is usually constructed over a large water body or physical obstruction. The principal components of a bridge include the superstructure, the substructure, and the deck.

⏺Bridges usually have complex structures. Piers and abutments are the supporting structures found in a bridge. Bridges usually have linear and straight assage. A bridge may usually extend from 6 meters to more than 120 meters and have extremely deep and strong foundations.

⏺Similar to a culvert, bridges can be both pre-constructed and constructed on-site. However, unlike the construction of culverts, the construction of bridges requires more manpower, a substantial budget, and a lot of time.

🔰Similarities Between Culvert and Bridge

⏺Both culvert and bridge are manmade structures that facilitate travel and transport.
They both require manpower, time, and capital.

⏺Both culverts and bridges can be pre-constructed or constructed on the site.
Difference Between Culvert and Bridge

⏹Definition

⏺A bridge is a manmade structure constructed over a large water body or physical obstruction, while a culvert is a tunnel-like structure built to allow water to pass under a railway or a roadway.

⏹Nature

⏺Culverts are simple in structure and design, while bridges are more complex.

⏹Size

⏺Moreover, culverts tend to be smaller than bridges.

🎲Main Components

⏺Key components of a culvert include concrete boxes or cells, a slab or a top deck, pipes, and other supporting parts, while key components of a bridge include the superstructure, substructure, and deck.

🎲Structure

⏺A culvert has an enveloping structure that comes with two sides, a floor, and a roof, while a bridge usually has linear and straight assage. In contrast to a culvert, a bridge has no floor.

🎲Construction

⏺Unlike the construction of culverts, the construction of bridges requires more manpower, a substantial budget, and a lot of time.

📜Conclusion

⏺In conclusion, the main difference between culvert and bridge is that a bridge is a passage we use for transportation over a large water body or physical obstruction, while a culvert is a tunnel-like structure that allows water to pass under a railway or a roadway.

@etconp

👉Breakdown of Lump Sum Prices under FIDIC Contracts

In FIDIC contracts, lump sum prices are commonly used for specific items or packages of work. However, these lump sum prices can create challenges when it comes to interim payments, variation valuation, and potential disputes. To address these challenges, FIDIC contracts require the Contractor to provide a breakdown of lump sum prices.

The breakdown of lump sum items is a requirement under FIDIC contracts, specifically Sub-Clause 14.1(d) of Fidic 1999, equivalent sub-clause within 1987 edition is Sub-Clause 57.2. The purpose of this breakdown is multifaceted:

1. Facilitates Interim Payments: By providing a detailed breakdown of lump sum prices, the Contractor enables the Engineer to calculate the values to be included in Interim Payment Applications, ensuring a smoother payment process.

2. Reduces Scope for Argument: By providing a clear breakdown of lump sum prices, the Contractor and Engineer can reduce the scope for argument and potential disputes regarding the proportion of items included in the Schedules as lump sums.

3. Supports Variation Valuation: The breakdown helps to determine the proportion of lump sum prices that should be included in each Variation, ensuring that payments reasonably reflect the distribution of the lump sums over the period of the Contract.

In summary, the Contractor will typically wish to be paid in full for the item at the earliest possible moment. The Engineer, while not bound by the breakdown, is expected to discuss any queries or changes with the Contractor. The breakdown of lump sum items is essential for facilitating interim payments, enabling process of smooth IPCs, reducing the scope for argument, and supporting variation valuation.

@etconp

👉Waffle Slab is a type of flat reinforced concrete slab that uses a grid system of ribs in two directions, resembling the pattern of a *waffle*, hence the name.

📌 Key Features

- It consists of a concrete slab supported by a network of intersecting ribs.
- The ribs are formed using reusable plastic or steel molds.
- It is typically used in wide-span areas requiring high load resistance without the need for drop beams.

✅ Advantages

1. *Concrete savings* compared to traditional slabs.
2. *Lighter weight*, reducing loads on columns and foundations.
3. *High crack resistance* due to effective load distribution across the ribbed network.
4. *Aesthetic architectural look*, and can be left exposed in modern designs.

❌ *Disadvantages

- *More complex execution* requiring high precision in mold placement.
- *Higher formwork cost* compared to conventional slab systems.
- *Not suitable for small areas* or those with dense internal partitioning.

@etconp