continuing of foundations Flashcards
What are the types of foundations mentioned?
Strip, Deep strip, Pad, Pile, Raft
These are common foundation types used in construction.
What is a basic strip foundation characterized by?
Depth equals projections, can be expensive and heavy
This means that the depth of the foundation must match its projections, leading to higher costs.
What is a cheaper solution to prevent cracking in a basic strip foundation?
Reinforce the concrete
Reinforcement helps in managing structural integrity without increasing cost significantly.
What information is needed to design a simple strip foundation?
Type of ground/soil, ground conditions, load of the structure per metre, mass of the structure, length of load bearing walls, width of bearing wall
These factors are critical for ensuring the foundation can support the structure effectively.
What are end bearing piles?
Piles where there is a firm strata
These piles transfer loads directly to a solid layer of soil or rock.
What are friction or floating piles?
Piles that transmit load to surrounding soil via friction
They are used in weak subsoil conditions to distribute loads more evenly.
What is a replacement pile?
A hole for pile shaft bored in the ground, and the resultant void filled with reinforced or plain situ
This type of pile replaces the soil with concrete to provide support.
What is a displacement pile?
Driven into the ground, displacing the subsoil
This method allows the pile to take its place by pushing aside the existing soil.
What types of piles are categorized by installation method?
Driven piles, bored piles
This classification helps in selecting the appropriate piling technique based on site conditions.
What types of piles are categorized by functioning?
End bearing piles, friction piles
Understanding the function helps in determining how the pile will perform under load.
What is the basic design procedure for foundations?
Calculation of anticipated structural loading, choosing foundation type, sizing the foundation
This procedure ensures the foundation is adequately designed for its intended use.
What factors should be considered when choosing a foundation type?
Soil conditions, type of structure, structural loading, location of site, economic factors, time factors, construction problems
These factors influence the feasibility and effectiveness of the foundation.
What is a strip foundation suitable for?
Up to 4 stories, most subsoils, light structural loadings
This makes strip foundations versatile for various building types.
What does a continuous strip of concrete provide in a strip foundation?
A ground bearing under the load bearing walls
This design helps distribute structural loads evenly across the foundation.
What type of concrete is usually required for strip foundations?
Reinforced concrete
Reinforcement is necessary to enhance the durability and strength of the foundation.
