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  2. Crawl space - Wikipedia

    en.wikipedia.org/wiki/Crawl_space

    A crawl space or crawlspace is an unoccupied, unfinished, narrow space within a building, between the ground and the first (or ground) floor. The crawl space is so named because there is typically only enough room to crawl rather than stand; anything larger than about 1 to 1.5 metres (3 ft 3 in to 4 ft 11 in) and beneath the ground floor would ...

  3. Drain-waste-vent system - Wikipedia

    en.wikipedia.org/wiki/Drain-waste-vent_system

    In the U.S., every plumbing fixture must also be coupled to the system's vent piping. [1] Without a vent, negative pressure can slow the flow of water leaving the system, resulting in clogs, or cause siphonage to empty a trap. The high point of the vent system (the top of its "soil stack") must be open to the exterior at atmospheric pressure.

  4. List of most expensive buildings - Wikipedia

    en.wikipedia.org/wiki/List_of_most_expensive...

    Jewel Changi Airport (mixed-use building) Singapore Singapore: Moshe Safdie: Changi Airport Group 2019 1.26 [47] 1.42 Comcast Technology Center: Philadelphia United States: Foster and Partners: Comcast: 2018 1.5 [48] 1.62 Merdeka 118: Kuala Lumpur Malaysia: Fender Katsalidis in association with RSP KL PNB Merdeka Ventures Sdn Bhd: 2023 1.21

  5. Flood opening - Wikipedia

    en.wikipedia.org/wiki/Flood_opening

    Most regulatory authorities in the United States that offer requirements for flood openings define two major classes of opening: [1] engineered, and non-engineered. The requirements for non-engineered openings are typically stricter, defining necessary characteristics for aspects ranging from overall size of each opening, to allowable screening or other coverage options, to number and ...

  6. Glossary of construction cost estimating - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_construction...

    A Allocation of costs is the transfer of costs from one cost item to one or more other cost items. Allowance - a value in an estimate to cover the cost of known but not yet fully defined work. As-sold estimate - the estimate which matches the agreed items and price for the project scope. B Basis of estimate (BOE) - a document which describes the scope basis, pricing basis, methods ...

  7. Low-water crossing - Wikipedia

    en.wikipedia.org/wiki/Low-water_crossing

    This type of crossing is much cheaper to build than a high bridge that keeps the road surface consistently above the highest water level, and is usually deployed in semi-arid areas where high-volume rainfall is rare and the existing channel is shallow (which requires extra ramping on the banks to build a more elevated bridge and thus costs more ...

  8. Basement - Wikipedia

    en.wikipedia.org/wiki/Basement

    This phenomenon, called the "stack effect", causes the home to suck air up from the crawl space into the main area of the home. Mould spores, decomposition odours, and material from dust mites in the crawl space can come up with the air, aggravating asthma and other breathing problems, and creating a variety of health concerns. [7] It is ...

  9. 1:5:200 - Wikipedia

    en.wikipedia.org/wiki/1:5:200

    In the construction industry, the 1:5:200 rule (or 1:5:200 ratio) is a rule of thumb that states that: . If the initial construction costs of a building is 1, then its maintenance and operating costs over the years is 5, and the business operating costs (salary of people working in that building) is 200.