ACI 305R-10: Guide to Hot Weather Concreting by ACI Committee 305

By ACI Committee 305

Environmental components, similar to excessive ambient temperature, low humidity, excessive wind, or either low humidity and excessive wind, have an effect on concrete houses and the development operations of combining, transporting, and putting of the concrete fabrics. This consultant presents measures that may be taken to reduce the bad results of those environmental components and decrease the possibility of severe problems.

This advisor defines sizzling climate, discusses power difficulties, and provides practices meant to reduce them. those practices comprise picking out fabrics and proportions, precooling components, and batching. different issues mentioned contain size of haul, attention of concrete temperature as positioned, amenities for dealing with concrete on the website, and, in the course of the early curing interval, putting and curing concepts, and acceptable checking out and inspection approaches in sizzling climatic conditions. The fabrics, methods, qc measures, and inspections defined during this rfile could be demonstrated, monitored, or played as appropriate basically by means of contributors preserving the fitting ACI certifications or similar.

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According to Democritus, stormy. And on the 4th day, according to Eudoxus, the Dolphin [Delphinus] sets acronychally. 25 PREDICTION AND THE ROLE OF TRADITION 1111 2 3 4 5 6 7 8 9 10111 11 2 3 4 5 6 7 8 9 20111 1 2 3 4 5 6 7 8 9 30111 1 2 3 4 5 6 7 8 9 40111 1 21111 folio And on the 5th day, according to Eudoxus, the Lyre sets acronychally. 43 The ‘Geminus parape¯gma’ is generally regarded as a compilation of information from earlier parape¯gmata; the same has been argued for the later Milesian stone parape¯gma.

73 This view of the instability of weather and climate patterns would weigh against the longevity of the astrometeorological tradition. Nevertheless, it is clear that astrometeorological parape¯gmata that listed earlier observations and predictions were produced over a long period of time. But, as will be discussed below, both a nonspecialist author, Pliny the Elder, and the celebrated astronomer Ptolemy emphasized that knowledge of the location in which the astronomer worked was crucial. Moreover, the role of the stone parape¯gmata needs to be compared to that of other types of inscriptions.

5 Celestial omens were systematically collected since the beginning of the first millennium BCE. Such omens often had the form that the protasis (the ‘if’ clause of a conditional statement) collected observations of both astronomical events and meteorological events. The apodosis (the ‘then’ clause) referred to political or other events concerning the fate of the state or its rulers. The relationship between astronomy and meteorology was not of cause and effect; rather, both astronomical and meteorological events were treated as the same sort of triggers for omen.

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