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Deposition and microbial analyses from roof-top sediments within different sanitation environmentsJohn, Chukwuemeka K., Pu, Jaan H., Moruzzi, R., Hanmaiahgari, P.R., Pandey, M., Zang, S., Jamei, M. 12 October 2024 (has links)
Yes / Since the building roof acts as hub for atmospheric sediment deposition, the attached microbes can enter rainwater storage
tank with ease to cause health issue for rainwater users. This study aims to explore the trend of roof-top deposited microbes
in the different areas of Ikorodu local Government Area at Lagos, Nigeria. This paper also tests the hypothesis that the roof
sediment deposition being a significant source to home bacteria. The total deposition rate on the roof for 34 weeks, which
include 17 rainy and 17 dry weeks, were investigated. The enumerated bacteria was obtained from the roof deposit samples,
where four representative different sites have been analysed to study the solid depositions and microbes within the area
thoroughly. The sites were selected judging by their levels of sanitation and vegetation rate. The experimental investigations
showed that enumerated microbes and total suspended solid (TSS) depositions in the different areas were higher in the dry
season compared to rainy season, and the highest deposition was experienced in the Harmattan period. In addition, the results
showed that areas with poor drainage infrastructure and poor sanitation have the roof-top deposition with higher bacterial
count than good sanitation areas; while the unpaved and unvegetated areas produced higher deposits than the paved and
vegetated areas. In terms of contamination sources, this study has illustrated that the particulate deposition on the roof-top
prior to collection has further contaminated the roof-harvested rainwater.
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Dagvattenhantering inom starkt hårdgjord radhustomt med jord av begränsade infiltrationsegenskaper. / Stormwater management in strong hardened row house site with soil of limited infiltration properties.Andersson, Rickard January 2016 (has links)
Syfte: Problemet med hårdgjorda ytor, som exempelvis asfalt och tak, är att de inte absorberar dagvattnet tillräckligt. Vidare leder detta till att gräsytor och andra absorberande ytor runt omkring måste ta hand om det dagvatten som inte de hårdgjorda ytorna kan tillvarata. Översvämningar i urbana miljöer har blivit allt vanligare på grund av kraftiga regn och stor andel hårdgjorda ytor. Detta leder till att ledningsnätet för dagvatten blir överbelastat. Därmed behövs väl fungerande utjämningsmagasin nära källan för att efterlikna naturens naturliga avrinningsförlopp. Målet var att utreda vilken eller vilka utjämningsmagasin som främst bör tillämpas i starkt hårdgjorda små radhustomter, med avseende på effektivitet, kostnad och underhåll, då jordmånen har begränsade infiltrationsegenskaper. Metod: De metoder som har använts för att svara mot målet är dokumentanalys, kvalitativ intervju och fallstudie. Dokumentanalysen fungerade som underlag för fallstudien och intervjuerna fungerade som bidragande empiri för fallstudien. Resultat: Det utjämningsmagasin som är att föredra är rörmagasin när anläggningsytan är begränsad och jordmånen har begränsade infiltrationsegenskaper. Konsekvenser: I problembeskrivningen beskrivs problemet med att det blir allt fler översvämningar i urbana miljöer på grund av de hårdgjorda ytorna och de kraftiga regnen. Vidare beskrivs det att ledningssystemet därför riskerar att bli överbelastat. Detta problem bekräftades även i intervjuerna. Arbetet löste inte vilket utjämningsmagasin som är att föredra för alla typer av fall, utan för fall där tomtytan är begränsad och där jordmånen har begränsade infiltrationsegenskaper. Lösningen på problemet är därför att rörmagasin är det utjämningsmagasin som är att föredra vid lokalt omhändertagande av dagvatten vid dessa förhållanden. Vid tillämpning av detta resultat i verkligheten rekommenderas det att använda kostnaderna per meter och utjämningsvolym per meter som finns i arbetet för att komma fram till hur lång sträcka som rörmagasinet behöver anläggas på för att uppnå önskad utjämningsvolym. Poängsättningen som har gjorts för underhållet kan däremot återanvändas till andra fall. Begränsningar: Resultatet är tillämpbart i liknande typfall som för fallstudien, alltså vid radhus där ytan för utjämningsmagasinet är begränsat och där jordmånen har begränsade infiltrationsegenskaper. I arbetet har ett diagram tagits fram där anläggningskostnaden per meter framgår för respektive utjämningsmagasin och ett diagram med utjämnad volym dagvatten per meter. Dessa diagram kan därför tillämpas på andra fall med små ytor men med lite andra mått på tomten. Därav är resultatet även tillämpbart på andra fall. / Purpose: The problem with hard surfaces, as for example asphalt and roofing, is that they do not absorb enough rainwater. Furthermore, this leads to that grass surfaces and other absorbent surfaces around having to take care of all stormwater that the hardened surfaces cannot infiltrate. Flooding in urban environments has become increasingly common due to heavy rain and a high proportion of hard surfaces. This leads to an overload of the pipe line for rainwater. Therefore well-functioning balancing trays close to source needed to mimic natural drainage of nature. The goal was to investigate witch countervailing magazine mainly should be applied in heavily paved small terraced plots, where the soil has limited infiltration properties, in terms of efficiency, cost and maintenance. Method: The methods used to meet the objective is analysis of documents, qualitative interviews and a case study. The document analysis serves as a basis for the case study and interviews serve as empirical input for the case study. Findings: The countervailing magazine that is preferred is the pipe magazine when the plant surface is limited and the soil has limited infiltration properties. Implications: The problem statement treats the issue with an increasing number of floodings in urban environments due to the paved surfaces and the heavy rains. Furthermore, it is disclosed that the management system therefore risks becoming overloaded. This problem was also confirmed in the interviews. The work did not identify which countervailing magazine that is preferred for all kinds of cases, but only in the cases where land space is limited and where the soil has limited infiltration properties. The solution is therefore that pipe magazine is the magazine preferred for local disposal of stormwater in those circumstances. It is recommended when applying this result real life, to use the cost per meter and countervailing volume per meter available in efforts to work out how long stretch pipe magazine needs to be built on to achieve the desired equalization volume. Rating systems made for maintenance can however be used for other cases. Limitations: The result is applicable in similar scenarios as for the case study, which is at a row house site where the surface for the magazine is limited and where the soil has limited infiltration properties. A graph has been developed for the work where the construction cost per meter is described for each countervailing magazine and also has a graph with stormwater volume per meter been developed. These diagrams can therefore be applied to other cases with small areas but with other measures of the plot. Therefore the result also is applicable to other cases.
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Polyfunkční dům / Multi-purpose buildingKopr, Radim January 2019 (has links)
The diploma thesis deals with the design of a multifunctional house on the street Křídlovická in the city of Brno. The new building is five-storey with four above-ground and one underground floors. The main entrance is oriented to the southeastern side and adjacent to the northwest side, and a separate entrance to the underground garage in the southwest corner of the designed object. Behind the main entrance is a staircase connecting all floors, after a special entrance for the underground garage is the staircase down into the garage. From the southwest side there are entrances to restaurants and shops, these have staffing and supply entrances and social facilities from the north-east side of the building. A downhill ramp is also located behind the northeast side of the building, from the southwest side are solved areas - restaurant garden, sidewalks and parking areas. In other above-ground floors, open space office spaces with separate meeting rooms, office director, secretary offices, and social facilities on the northeastern side of the floor are designed. Within these floors is proposed continuous greening of the atrium. The supporting system is a monolithic reinforced concrete combined with masonry staircases and a northeast wall. In the basement, the support system is a skeleton in combination with the walls of a lost formwork. Roof flat single-skinned with various inclinations 1-5°
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Stavebně technologický projekt administrativní budovy firmy Ray Service, a.s. ve Starém Městě / Construction Project - Implementation of Administrative Building for Ray Service, a.s. in Staré MěstoSeménka, Petr January 2020 (has links)
The content of this thesis is a construction technology project of a new office and production building for company Ray Service a.s. in Staré Město near Uherské Hradiště. The thesis contains technical reports, construction technology study, design of transport ways, technological regulations of demolition and earthworks and regulations for construction of foundation structures. Furthermore is made design of the main machine assembly, inspection and test plan and the design of the construction site, including a technical report. Finally is made a project for the construction of area roads including time plan, LEED certification, noise study and comparison of the main lifting mechanisms.
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