What are the site investigation techniques?
The investigation techniques include soil and rock sampling, soil vapor sampling, direct measurement of vapor flux, groundwater sampling, laboratory analysis, and stockpile sampling.
What is a site investigation report?
What is purpose of site investigation?
The purpose of site investigation is to establish parameters for foundation and substructure design; and to assess the potential contamination risks to humans, property and the environment.
What is desk study in site investigation?
A desk study is the collation and review of information already available about a site, and is carried out at an early stage of site appraisal to inform and guide the remainder of the site investigation.
What is a phase 1 desk study?
A Phase 1 Desk Study is a preliminary risk assessment from the collation and review of published information regarding a sites historical, geological and environmental setting. The purpose of a Desk Study is to determine a preliminary risk rating and to plan the subsequent stages of the site investigation.
How do you write a soil investigation report?
A good soil investigation report should be prepared in the following standard format:Introduction.Objectives of the geotechnical investigations.Details of the proposed structure. ADVERTISEMENTS:Site conditions.Field investigations.Laboratory test results.Soil profile.Allowable bearing capacity.
Is code a soil investigation?
“IS : 5313-1980 Guide for core drilling observations (first revision ). *IS : 6926-1972 Code of practice for diamond core drilling for site investigation for river valley projects. *IS : Code of practice for subsurface exploration for earth and rocktill dams.
What is a soil investigation?
Ground investigations are a means of determining the condition of the ground, ideally before beginning construction works. Ground investigations help determine: Water table level and water flow. The nature of faults, fissures and voids in the underground. Ground layer thicknesses and the mechanical properties of soil.
How do you investigate soil?
Soil investigation must be undertaken to determine the bearing capacity of the soil, its settlement rate and the position of the water table. One of the easiest methods is to dig trial pits and visual inspections carried out then samples with minimum disturbance are collected for subsequent laboratory testing.
What does disturbed soil indicate?
Soil that has been changed from its natural condition by excavation or other means.
What is SPT in soil investigation?
Standard Penetration Test (SPT) is a simple and low-cost testing procedure widely used in geotechnical investigation to determine the relative density and angle of shearing resistance of cohesionless soils and also the strength of stiff cohesive soils.
What are the 4 major components of soil?
The four components of soil include: mineral matter 45%, organic matter 5%, air 25%, and water 25%. Therefore, soil is 50% solid and 50% pore space.
What are six major components of soil?
What are six major components of soil? Sand and gravel, silts and clays, dead organic material, fauna and flora, water, and air.
What are the 5 basic components of soil?
The basic components of soil are minerals, organic matter, water and air. The typical soil consists of approximately 45% mineral, 5% organic matter, 20-30% water, and 20-30% air.
What are the 3 main types of soil?
There are three different types of soil—sand, silt, and clay. Each type of soil has different characteristics. The major difference is in the size of the particles that make up the soil.
What are the 5 types of soil?
The 5 Different Types Of SoilSandy Soil. Sandy soil is light, warm, and dry with a low nutrient count. Clay Soil. Clay weighs more than sand, making it a heavy soil that benefits from high nutrients. Peat Soil. Peat soil is very rarely found in natural gardens. Silt Soil. Loamy Soil.
What are the 8 types of soil?
They are (1) Alluvial soils, (2) Black soils, (3) Red soils, (4) Laterite and Lateritic soils, (5) Forest and Mountain soils, (6) Arid and Desert soils, (7) Saline and Alkaline soils and (8) Peaty and Marshy soils (See Fig. 7.1).
What gives the Colour to the soil?
Soil colour is usually due to 3 main pigments: black—from organic matter. red—from iron and aluminium oxides. white—from silicates and salt.
What color is healthy soil?
Black/dark brown soil usually indicates the presence of decaying organic matter so is generally fertile. Pale brown/yellow soil often indicates that organic matter and nutrients are low and this generally means poor fertility and structure.
What are three main factors that influence soil color?
What determines soil colour?Mineral matter derived from the constituents of the parent material.Organic matter.The nature and abundance of iron.Moisture content.