MH Poor Medium to Very Not Poor to Fair High suitable CH Poor to Very Medium Not Practically Poor suitable Impervious OH Poor to Very Medium Not Practically Poor suitable Impervious PT Not suitable Slight Not Poor to Fair suitable d. There are three basic types of foundations used for the construction of any type of structure. As the mission dictates, these types of foundations can be combined. (On SLIDE #45) (1) foundations have a trench footing with a concrete wall “T” or concrete block wall resting on top of it. This type of foundation is used if the structure requires a basement or crawl space. (On #46) (2) Slab foundations are prevalent in construction where a basement or crawl space is not required. This type of foundation consists of a concrete slab which is poured directly on the ground, with trench footings poured at locations where additional support is required. (On SLIDE #47) (3) Pier-and-Column foundations consist of individual footers with a column placed on top of it. This type of foundation combination is used primarily for the support of girders and beams which support structural floor members. (Off #48) TRANSITION: We have just covered foundation systems. Are there any questions? OPPORTUNITY FOR QUESTIONS: 1. QUESTIONS FROM THE CLASS: Do you have any questions concerning foundation systems? (Answer students’ questions.)
MH Poor Medium to Very High Not suitable Poor to Fair CH Poor to Very Poor Medium Not suitable Practically Impervious OH Poor to Very Poor Medium Not suitable Practically Impervious PT Not suitable Slight Not suitable Poor to Fair d. There are three basic types of foundations used for the construction of any type of structure. As the mission dictates, these types of foundations can be combined. (On SLIDE #45) (1) “T” foundations have a trench footing with a concrete wall or concrete block wall resting on top of it. This type of foundation is used if the structure requires a basement or crawl space. (On #46) (2) Slab foundations are prevalent in construction where a basement or crawl space is not required. This type of foundation consists of a concrete slab which is poured directly on the ground, with trench footings poured at locations where additional support is required. (On SLIDE #47) (3) Pier-and-Column foundations consist of individual footers with a column placed on top of it. This type of foundation combination is used primarily for the support of girders and beams which support structural floor members. (Off #48) TRANSITION: We have just covered foundation systems. Are there any questions? OPPORTUNITY FOR QUESTIONS: 1. QUESTIONS FROM THE CLASS: Do you have any questions concerning foundation systems? (Answer students’ questions.)
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