procedure of determining surface and subsurface conditions of an area of proposed construction

May influence what to be built and affect the design and construction

Affects construction:

checking the behavior of soil below ground level

soil profile

Layers of rocks

the property of soil that makes the water pass through

horizontal movement of water through soil

Soil Exploration:

drilling or advancing a hole in the ground

removing soil from the hole

determining the characteristics or properties of the soil

3 methods of Boring

a screw-like tool used to dig a hole on the ground

used to reach desired depth

maximum depth of hand operated auger

2 types of machine operated auger

prevents in the collapsing of hole walls

Larger than boreholes

maximum depth of test pits

a hole in the ground

protective structure to prevent collapsing of walls

used to retrieve sample of rocks

Where soil samples go

Have a diamond tip

cylindrical sample of rocks

Sampling:

natural structure get disturbed during the sampling process of soil

It says the "Depth at least 5m hard strata until a suitable bearing layer is reached."

Twice the least dimension+ depth of ______.

Retain their natural structure and water content during the sampling process of soil.

driven to soil in order to collect undisturbed soil samples.

3 methods or Types of Testing

-to determine the relative density of granular soil. -no bonding forces

-determining the soil type. - same with SPT but different sampler called "Cone Penetrometer"

Apex Angle is 60°

Element to measure pore pressure

with porous element

determine the shear strength of soft clays