Column Footing Design Project - Civil Engineering, 2024

This assignment details the design of a column footing for a structure, including calculations and considerations for soil bearing capacity, axial forces, and construction methods. The project involves designing a column footing to support four steel columns, with specifications for concrete and steel grades, along with the calculation of the required footing dimensions. The design process includes determining the total axial force, soil reaction, and required footing area. The assignment also discusses construction tasks, such as excavation, formwork, and curing, as well as cost estimation and the importance of maintaining a detailed design record. Furthermore, it emphasizes the significance of understanding the environmental and heritage impacts of construction materials like steel and concrete, as well as the importance of risk assessment and management during construction. The project highlights the integration of geotechnical data and engineering surveys in the design process.

Column Footing Design 1
COLUMN FOOTING DESIGN
Student’s Name
Course
Professor’s Name
Institutional Affiliation
City
Date

Column Footing Design 2
Project Brief
The objective of this project is to design one column footing that will support four sleet
columns each of 50mm x 50mm x 6mm. The project is based in 219 Forestry Rd. Lyndeborough
QLD.
Documentation
Column bases are a critical part of a structure as it dissipates the loading and forces
uniformly into the ground. It is important do document several items for future references. Some
of these items include the soil bearing capacity, the column material, and size, survey data,
loading that the columns support, etc. all these factors contribute significantly to the design of
the column footing. In the twenty-first century, the documentation is stored in software and Apps
for ease of retrieval.
Interpretation of cultural and heritage data
In the past, steel and concrete were not among the main construction materials. Wood and
stone were considered to be the best option when it comes to construction. These materials were
locally available y then. As time progresses, human beings have adopted steel and concrete as
their main construction materials. These materials allow for complex designs allowing for
flexibility in construction. The high tensile strength and compression strength properties of steel
and concrete define the cultural and heritage values of many people across the globe.
Interpretation of Environmental issues, Risk Assessment, and Management
Steel and concrete building materials are non-biodegradable and thus when released
directly to the environment, they remain in their initial form which is harmful to the natural
environment. These materials also pose hi grist to people who work on them at any stage of
construction. Steel welding and cutting expose welders and other workers to burning and cuts.

Column Footing Design 3
On the other hand, concrete contains carcinogenic materials that cause irritation to the body. It is
a good practice to re-use and recycle these construction materials to minimize the risks
associated with disposal.
Interpretation of Engineering Survey, Geotechnical Information, Hydrological and
Meteorological Data
From the survey, the type of soil, depth of earth layers, underneath rocks properties, and
soil bearing capacity are established. In 219 Forestry Rd. Lyndeborough QLD, the soil bearing
capacity from the survey is 150 KN/Square metre. This is important when sizing the column base
area.
Detailed Calculations
Data Provided
Loading at each column=20 KN
Soil bearing capacity=150 KN/m2
Concrete grade=25 with compressibility strength of 25 N/mm2.
Steel grade for the columns=Fe 415 with a yield strength of 415 N/mm2
Axial Forces
The total axial force on the footing is equal to the sum of loadings on the columns=20KN
*4=80KN.
Area of column
Area=10 % of Loading +Loading
Soil BearingCapacity
¿ 10 % ×(20 KN ∗4)+(20 KN∗4)
150
¿ 0.59 Sq .m
Length of column footing= √ 0.59 Sq . m
¿ 0.77 m

Column Footing Design 4
Thus, the total length of the required column footing equals to 1.1m + 0.77m=1.87m
Soil reaction
Soil reaction= Factor load
Area of column footing
¿ (20 KN∗4)× 1.5
0.59
¿ 203 kN /Sq . m
Moment
Factor Moment= Loading × Length × ( Length−Steel column length
2 )
2
× 1
2
¿( 20 KN ∗4) ×1.87 × ( 1.87−0.05
2 )
2
× 1
2
¿ 182 KNm
Depth of column footing
Depth= Moment
0.138 ×Compression strength of concrete × Length of footing
¿ √ 182
0.138 × 25× 1.87
¿ 531 mm
Construction Tasks and Operation
The construction starts by clearing the topsoil and excavation to the required depth.
Formworks using Y-Bars follows and casting is then done. This is given at least seven days for
curing from where steel columns are bolted onto the column footing.
Estimative Cost
This is dependent on the market rates of materials used, labor, operations costs, logistics,
among other costs. A quantity surveyor is an important person to perform all the cost
implications on the project.
Design Record

Column Footing Design 5
This is kept in project archives by the project manager for future retrievals. The records
should be clear and free from ambiguity.