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  2. Subduction tectonics of the Philippines - Wikipedia

    en.wikipedia.org/wiki/Subduction_tectonics_of...

    The collision between the Palawan Block and the central Philippines began during early to middle Miocene. Altogether, there are three observed collision zones which developed at different times. They are: [24] Romblon Island collision-related accretionary complex (early Miocene) [24] Mindoro ophiolite complex (middle Miocene–Pliocene) [24]

  3. North Palawan Block - Wikipedia

    en.wikipedia.org/wiki/North_Palawan_Block

    The North Palawan block is considered to form the northeastern portion of a much larger area of block faulted and foundered pre-Tertiary continental material which extends throughout the southern part of the South China Sea Basin and includes the Spratly Islands and the Dangerous Grounds area off Borneo (Hamilton, 1979). The evidence for the ...

  4. PHIVOLCS earthquake intensity scale - Wikipedia

    en.wikipedia.org/wiki/PHIVOLCS_Earthquake...

    PHIVOLCS cites seismic scale specifically developed for the Philippine setting, the different geography of each country and other "geological considerations" led to the development of PEIS. The scale measures the effect of an earthquake on a given area based on its relative effect to people, structures and objects in the surroundings. [2]

  5. Philippine fault system - Wikipedia

    en.wikipedia.org/wiki/Philippine_Fault_System

    The Philippine fault system is a major inter-related system of geological faults throughout the whole of the Philippine Archipelago, [1] primarily caused by tectonic forces compressing the Philippines into what geophysicists call the Philippine Mobile Belt. [2] Some notable Philippine faults include the Guinayangan, Masbate and Leyte faults.

  6. Seismic base isolation - Wikipedia

    en.wikipedia.org/wiki/Seismic_base_isolation

    The top foundation layer, which formed a large plate that was in no way attached to the structure’s base, was composed of polished stones. The reason this second foundation was not tied down to the base was that in the case of an earthquake, this plate-like layer would be able to slide freely over the structure’s first foundation.

  7. Concrete slab - Wikipedia

    en.wikipedia.org/wiki/Concrete_slab

    A slab is ground-bearing if it rests directly on the foundation, otherwise the slab is suspended. [3] For multi-story buildings, there are several common slab designs (see § Design for more types): Beam and block, also referred to as rib and block, is mostly used in residential and industrial applications. This slab type is made up of pre ...

  8. Philippine Mobile Belt - Wikipedia

    en.wikipedia.org/wiki/Philippine_Mobile_Belt

    Major physiographic elements of the Philippine Mobile Belt Puerto Princesa Subterranean River National Park marker describing the geologic history of the Philippines. In the geology of the Philippines, the Philippine Mobile Belt is a complex portion of the tectonic boundary between the Eurasian plate and the Philippine Sea plate, comprising most of the country of the Philippines.

  9. Foundation (engineering) - Wikipedia

    en.wikipedia.org/wiki/Foundation_(engineering)

    Shallow foundations of a house versus the deep foundations of a skyscraper. Foundation with pipe fixtures coming through the sleeves. In engineering, a foundation is the element of a structure which connects it to the ground or more rarely, water (as with floating structures), transferring loads from the structure to the ground.