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Essay Unit 4 - Construction Technology BTEC Level 3 National Construction and the Built Environment, ISBN: 9781846906565
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Unit 4 Construction Technology
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ASSIGNMENT 2Subsoil investigation
JANUARY 1, 2021
IKRAM UDDIN
, 2
Contents
Investigation methods...........................................................................................................................1
Local authority archives....................................................................................................................2
Chemical analysis of soil samples and presence of sulphates......................................................6
Bibliography.........................................................................................................................................17
Investigation methods
There are a lot of different investigation method that needs to be done before construction work is
started. This is the place where most of the financial plan should be spent, to eliminate many of the
vulnerabilities around developing an establishment on obscure ground. This can be characterized as
far as buildability, where the greatest measure of data can be acquired with regards to a site to
eliminate any unexpected works and any connected expensive agreement varieties after the honour
of the agreement.
Desktop survey
A desktop survey is when the internet looking through books is involved such as searching through
the internet, asking the local community, going through books and maps.
Online maps:
The internet has made it simple to access the satellite view of the potential site, it will also reveal the
topographical details which means the heights and level which is shown by the shadow features in
the satellite view photo. The satellite view maps will show the water courses which is the ‘strict
planning regulation’ that is compulsory on any building development that is near flood plains. It can
reveal the tree that are not allowed to be cut down and also online maps show the archaeological
features, which is the historical asset such as the old buildings that are not allowed to be destroyed
as they are protected under the planning law. If the online map shows any of the features, then the
project will have to be delayed as archaeological will have to dig which increases the cost as the
developer will most likely have to pay for the work that needs
doing. (right, 2021)
Figure 1 online maps view (right, 2021)
Ikram uddin
, 2
Aerial Photograph
Aerial Photographs are useful as they take photographs from
above. It is a small plane that can take a scaled picture, so a
drawing plan can be created. It is mainly provided by
contractors that are experienced.
Figure 2 Aerial photograph
(https://www.skyepics.com, 2021)
Historical maps
They are available at the libraries and even online sometimes. It
can show the history of the site and can provide valuable such as
the footpaths and roadways and also it might show the
underground obstruction by analysing the size of the old
buildings.
Figure 3 Historical map
(https://digimap.edina.ac.uk, 2021)
Ordnance Survey maps 1:250 and 1:500
It is the uk’s national mapping agency. The maps are available in
a lot of different ranges. The give the details of the buildings and
structures, boundaries, surrounding, footpaths and properties.
They are also uploaded online.
Local authority archives
Pictures, ancient maps, street index data, and other information
can be found in these archives, which can be utilised to explore a
specific property or site. These records may need to be viewed at
a local archive centre.
Ikram uddin
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