### What does a cantilever refer to in the housing and construction industry? - [x] A structure that only has support on one end - [ ] A lightweight, portable construction tool - [ ] A type of foundation used in high-rise buildings - [ ] A method of insulating homes > **Explanation:** A cantilever refers to a structure that only has support on one end. It's principle is primarily seen in the design of balconies and decks, where one end is attached to the building's structure while the other end seems to hang in air. ### Cantilevers most commonly appear in which parts of a building? - [x] Balconies and decks - [ ] Foundations and basements - [ ] Roofs and ceilings - [ ] Doors and windows > **Explanation:** Cantilevers are most commonly seen in balconies and decks where one end is supported by a building's structure, and the other end appears to hang in space, creating a floating appearance. ### What proportion of the length of a cantilevered structure is usually required to be supported? - [ ] 33% - [x] 66% - [ ] 50% - [ ] 75% > **Explanation:** The distance between the wall and beam is usually required to be 66 percent of the structure's length to ensure adequate support. This allows 33 percent of the cantilevered structure to extend freely. ### What balances the weight in a cantilevered structure? - [ ] The floor and ceiling - [ ] The weight of the cantilever itself - [ ] Counterweights at the extending end - [x] The wall and a beam in the middle > **Explanation:** In a cantilevered structure, the weight is balanced by the wall on one end and a beam in the middle, allowing a portion of the structure to extend outwards. ### What type of playground equipment acts as a cantilevered structure on both sides? - [ ] Swing sets - [x] Seesaws - [ ] Climbing frames - [ ] Slides > **Explanation:** A seesaw is an example of a cantilevered structure on both sides, with a pole in the middle supporting some of the weight, allowing each end to offset the other and move up and down. ### Which of the following is NOT a characteristic of a cantilever? - [ ] It has support on one end - [ ] It appears to hang freely in space - [ ] It relies on a beam to distribute weight - [x] It is always made of metal > **Explanation:** While cantilevers have support on one end, appear to hang freely, and rely on beams to distribute weight, they are not always made of metal. Cantilevers can be constructed from a variety of materials depending on the application. ### Why is the 33 percent figure important in the context of cantilevers? - [ ] It represents the total weight distribution of the structure - [x] It denotes the portion of the structure that can float in air - [ ] It is the portion that requires reinforcement - [ ] It symbolizes the minimum insurance requirement for such structures > **Explanation:** In a cantilevered structure, 33 percent denotes the portion of the structure that can extend and float in the air while the remaining 66 percent provides the necessary support. ### Which part of a cantilevered structure bears the majority of the weight? - [x] The wall - [ ] The floating end - [ ] The floor underneath - [ ] The outer edge > **Explanation:** The wall bears the majority of the weight in a cantilevered structure, providing the primary support needed to allow the other end to extend freely. ### How does a seesaw function similarly to a cantilever? - [ ] It has immovable ends attached to the ground - [x] It is supported at the middle with each end balancing the other - [ ] It evenly distributes weight on a flat platform - [ ] It relies solely on hydraulic lifts > **Explanation:** A seesaw functions similarly to a cantilever as it is supported in the middle, and each end balances the other rider, allowing movement up and down. ### When applied to a building, what supports a cantilevered balcony? - [x] The building's structure at one end - [ ] Pillars on either side - [ ] An even number of posts on each corner - [ ] Cables from the ceiling > **Explanation:** For a cantilevered balcony, one end is supported by attaching it to the building's structural components allowing it to extend outward.