ROXAS BLVD/TAFT:SOIL TYPESOIL BEARING CAPACITYFOUNDATION TYPEPILING TYPE

Colyer, Emmanuelle Reye L.11251026Mendoza, Dioanna Sesa Marie A.11253746BLDTEC5/ DAR4/ RMA303/ MONDAY (8:00-13:00)Arch. Rodin Isidro

SOIL TYPE: Ground water laterite

• Laterites are soil types rich in iron and aluminum, formed in hot and wet tropical areas. Nearly all laterites are rusty-red because of iron oxides.

Laterite sample(above)

A represents soil; B represents laterite, a regolith; C represents saprolite, a less-weathered regolith; D represents bedrock (left side)

SOIL TYPE: Histosols

• Histosols - organic soils

SOIL TYPE: Histosols

• SUBORDERS• Folists - Histosols that are not saturated with water for long

periods of time during the year• Wassists - Histosols that are submerged for more than 21 hours

every day• Fibrists - Histosols that are primarily made up of only slightly

decomposed organic materials, often called peat (RIVER BASIN)(TAFT)

• Saprists - Histosols that are primarily made up of highly decomposed organic materials, often called muck

• Hemists - Histosols that are primarily made up of moderately decomposed organic materials

Subsidence

• Subsidence is the motion of a surface (usually, the Earth's surface) as it shifts downward relative to a datum such as sea-level. The opposite of subsidence is uplift, which results in an increase in elevation. Ground subsidence is of concern to geologists, geotechnical engineers and surveyors.

SOIL TYPE: Tropofibrists/Fibrists/Peat

• These are Fibrists with an isomesic or warmer iso-temperature regime.

• They have a mean annual soil temperature of 8°C or higher and have greater than 5°C difference between the mean summer and mean winter soil temperatures at a depth of 30 cm.

• They occur in coastal mangrove swamps and other coastal swamps and in closed depressions of intertropical areas.

SOIL TYPE: Fibrists/Peat

• Fibrists Histosols that are primarily made up of only slightly decomposed organic materials, often called pea

• Peat and loose waterlogged sand are very poor subsoils. If the peat can be stripped back to find suitable load-bearing ground of at least 1.5m depth, strip foundations may be suitable. A reinforced raft foundation will likely be required

SOIL TYPE: Fibrists/Peat

• Peat in its natural state consists of water and decomposing plant fragments with virtually no measurable bearing strength(Munro2004).

• Peat is considered as soft soil because this soil has high settlement value and even under moderately applied load. These soils are found in many countries throughout the world.

• Taft area is a waterbasin for the pasig river so the soil is full of liquid

SOIL BEARING CAPACITY

• Peat soil exhibits very low bearing capacity and this soil is not suitable for constructing embankment, highway, building or any other load bearing engineering structure.

FOUNDATION TYPE

• Raft Foundation or a Strip Foundation.

• Or you can use machines that mix soil to make it more stable

Mass Stabilization Method;

• this method can also be used for processing and encapsulating contaminated materials.

• Leading the way, ALLU’s Stabilization System, which consists of three devices :– pressure feeder, – power mixing unit and – control system• – allows contractors to gain access to grounds like

swamp where it is not possible to walk.

PILING TYPE

• they force a metal rod into the ground that equals the estimated weight of the building to be built.

PICTURES/VIDEO

References:• http://www.fao.org/docrep/x5872e/x5872e07.htm • http://eusoils.jrc.ec.europa.eu/esdb_archive/eudasm/asia/lists/cph.htm• http://eusoils.jrc.ec.europa.eu/esdb_archive/eudasm/asia/maps/PH2004_1SO.

htm• http://eusoils.jrc.ec.europa.eu/esdb_archive/eudasm/asia/maps/PH2004_2SO.

htm• https://www.google.com.ph/search?q=tropofibrist+earth+section&biw=1680&

bih=939&source=lnms&tbm=isch&sa=X&ei=HI5hVc6QAYWJuASqp4H4BA&ved=0CAYQ_AUoAQ#tbm=isch&q=fibrist+earth+section&imgrc=yttQjEiZNVDmnM%253A%3B7V8T6HrfpfQgnM%3Bhttp%253A%252F%252Fwww.fao.org%252Fdocrep%252Fx5872e%252Fx5872e0g.gif%3Bhttp%253A%252F%252Fwww.fao.org%252Fdocrep%252Fx5872e%252Fx5872e07.htm%3B599%3B650

• http://www.fao.org/docrep/x5872e/x5872e07.htm• http://encyclopedia2.thefreedictionary.com/Fibrist• http://www.cals.uidaho.edu/soilorders/histosols%20suborders.htm• http://omranista.com/eng/pdf/tech3-2.pdf • http://web.cals.uidaho.edu/soilorders/category/histosols/• http://en.wikipedia.org/wiki/Laterite

• https://www.youtube.com/watch?v=Tw7KiVMzzS4• https://www.youtube.com/watch?v=vX5tNMGpsfQ