This presentation includes Definition of Permeability, measurement of Permeability, Validity of Darcy's law, Darcy's Law, Methods of Finding Permeability, factors affecting permeability, Permeability of Stratified Soil
This presentation includes Definition of Permeability, measurement of Permeability, Validity of Darcy's law, Darcy's Law, Methods of Finding Permeability, factors affecting permeability, Permeability of Stratified Soil
Soils and rocks have unique and distinct engineering properties.
Engineering properties of soils and rocks are very essential parameters to be analysed for several technical reasons.
Properties of these materials may not only pose problems but also give solutions to solve the problems.
This presentation is all about Shear Strength of Soil and it's importance in Civil Engineering, application of shear strength, direct shear test, mohr's circle, mohr's coulomb, shear strength, triaxial shear test, unconfined compression test, vane shear test
Soils and rocks have unique and distinct engineering properties.
Engineering properties of soils and rocks are very essential parameters to be analysed for several technical reasons.
Properties of these materials may not only pose problems but also give solutions to solve the problems.
This presentation is all about Shear Strength of Soil and it's importance in Civil Engineering, application of shear strength, direct shear test, mohr's circle, mohr's coulomb, shear strength, triaxial shear test, unconfined compression test, vane shear test
Certain Soils don’t permit the construction of specific structures on it. The alternative is to improve the strength of the soil by various methods like:
Mechanical modification
Chemical Modification
Lime stabilization
Geo textile etc.,
Soil mechanics is a discipline that applies the principles of engineering mechanics to soils to predict the mechanical behavior of soil.
Geotechnical Engineering is the branch of civil engineering that deals with soil, rock, and underground water, and their relation to the design construction and operation of engineering projects.
Fundamentals of Soil Mechanics and ConcreteDenis Koval
Training Fundamentals on Soil Mechanics & Concrete by GLobal Construction
including:
- Soil Types
- Types of Soil Compaction
- Compact Soils
- Soil Gradation
- Soil Moisture Content
- Atterberg Limits Test
- Laboratory & Field Compaction Tests
- Types of Compaction Equipment
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An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
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2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
We all have good and bad thoughts from time to time and situation to situation. We are bombarded daily with spiraling thoughts(both negative and positive) creating all-consuming feel , making us difficult to manage with associated suffering. Good thoughts are like our Mob Signal (Positive thought) amidst noise(negative thought) in the atmosphere. Negative thoughts like noise outweigh positive thoughts. These thoughts often create unwanted confusion, trouble, stress and frustration in our mind as well as chaos in our physical world. Negative thoughts are also known as “distorted thinking”.
2. DEFINITION
The simplest classification of geological
deposits falls generally into two major classes
to provide engineers and others with basic
information which is:
“ROCK”- which refers mainly to a hard rigid
and strongly cemented deposit, and
“SOIL”- which refers to the soft, or loose and
cemented deposis
5. Top soil
150-300mm from soil surface
Contains vegetation, rubbish & rotten
materials
Not suitable in supporting foundation/structure
Usually the top soil will be cart away before
construction
6. GROUND SOIL
Situated between top soil & rock layer
The thickness of the soil varies depending on
the rock formation
This layer are compacted naturally which
occasionally can support light construction
12. IGNEOUS ROCK
E.g. – basalt & granite
Formed by solidification of molten materials
which has ascended towards the surface from
the hot lower levels of the earth crust
13. SEDIMENTARY ROCKS
E.g.-sandstone, shale, limestone
Formed by deep fissures and swallow holes
which are cavities formed at some time by the
passage of water through soft rock.
15. TYPES OF SOIL
2 types of soil
Non-cohesive soils
Cohesive soils
16. COHESIVE SOILS
•
•
•
•
•
•
•
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Fine grained particles are closely integrated and stick
together
Particle size ranges between 0.06mm or less
The level of cohesiveness depends on the size, shape and
water level
When its wet, it is soft and when its dry it becomes hard
Has a high level of moisture content
Always experiences shrinkage and extension process
The increasing of water level can caused soil strengths to
differ
Therefore the depth of the foundation should be constructed
at least 1m from the earth surface
17.
High level of water content can caused
difficulty in earth excavation which will flood
the construction site
E.g- clay,silt, peat and laterite
18. NON-COHESIVE SOIL
The soil particles are not sticking to each other
The particle size ranges between 0.06mm200mm
Non-cohesive soils has a high value for a
construction site
Water are easy to flow out because of its
hollow particle
E.g- gravel, sands
19. CLASSIFICATION OF SOILS
Soil classification can be done by:
Grain size-divided into several sizes
Coarse
grain non-cohesive
Fined grained cohesive
Organic soil
Can be done by sieving and sedimentation technique
- Sieving : for non-cohesive soil such as gravel and
sand
- Sedimentation : for cohesive soil such as clay and silt
20.
Moisture content
Moisture
content classification for cohesive
soil such as clay and silt
Can be classified by moisture content test or
plastic limit/liquid limit test. Refer to BS
1377:1975
21. GROUND WATER
Usually refer to the ground water level
Water usually come from rain and water penetration into
the earth opening which can penetrates until 12000m
Water content depends on:
Surface slopes/gradients
Vegetation
Weather
Soil opening and penetration
- Ground water content will influence construction works where it
involved the stabilization and strength of the soil.
22. - Usually high level of water content require a much
more complicated foundation system.
- It will also make more difficult when water
penetrates into excavation work and will obstruct
workers and machineries.
- Water proof retaining wall needed in such cases
23. SOIL CHARACTERISTIC IN
RELATION TO CHOICE OF
FOUNDATIONS
Soil have different attribute when load implied
on them. The characteristic are:
Compressibility
Permeability
Plasticity
24. CHOICES OF FOUNDATION
Solid chalk, sands and gravels or sand and gravels with
only small proportions of clay, dense silty sands
Uniform, firm and stiff clays
-Where vegetation is insignificant
-Where trees and shrubs are growing or to be planted
close to the site
-Where trees are felled to clear the site and construction is
due to start soon afterward
Shallow strip or pad footings as appropriate to the load
bearing members of the building
-Bored piles and ground beams, or strip foundations at
least 1m deep
-Bored piles and ground beams
-Reinforced bored piles of sufficient length with the top 3m
sleeved from the surrounding ground and with suspended
floor
Soft clays, soft silty clays
Strip footing up to 1m wide if bearing capacity is sufficient,
or raft
Peat
Bored piles with temporary steel lining or precast or insitu
piles driven to firm strata below
Mining and other subsidence area
Thin reinforced rafts for individuals houses with load
bearing walls and for flexible building