Fairy AtlasThe Illustrations of Immortals was a set of pictures created by the Ming Dynasty painter Zhang Lu. It is now in the collection of the Shanghai Museum. There were a total of 18 frames in this album, including 16 portraits and two landscape paintings. The figure painting depicted the gods of fortune, longevity, the eight immortals, and the five elders in folklore. The painting style was vivid and the strokes were elegant and powerful. This album was created in the Ming Dynasty. The author, Zhang Lu, was a painter of the Ming Dynasty. He was good at figure painting and landscape painting. He was known as one of the famous artists of the "Zhejiang School". The Atlas of Immortals showed Taoist thoughts and Chinese folk culture. It was a work with a strong Chinese flavor.
Atlas 20s51520S515 was a collection of national architectural design drawings, mainly related to reinforced concrete and brick drainage inspection wells.
The Atlas covers a variety of inspection well types, such as circular inspection well, rectangular straight inspection well, rectangular three-way inspection well, rectangular four-way inspection well, special-shaped three-way inspection well, rectangular three-way inspection well, rectangular four-way inspection well, special-shaped three-way inspection well, fan-shaped inspection well, vertical groove type drop well, stepped drop well, sinking well, gate groove well, small square inspection well, etc.
In terms of construction, there were many requirements. For example, if the foundation soil is disturbed or over-excavated, corresponding foundation treatment shall be carried out; if the excavation depth of the foundation pit is large, measures shall be taken to ensure the stability and safety of the foundation pit slope; if there is underground water above the design foundation bottom, effective construction drainage measures shall be taken to ensure the dry groove construction; if the foundation of the civil and thousand pipes is located in the well chamber foundation pit, the foundation below the foundation can be filled with graded sand and low-strength concrete; After the excavation of the foundation pit reaches the design elevation, the trench inspection shall be carried out together with the relevant departments.
There were also requirements for the foundation pit refill. The foundation pit refill must be carried out after the construction of the launder and the inspection well cover was completed and reached the design strength. Backfilling shall be carried out simultaneously around the foundation pit. The height difference shall not be greater than 300m. Heavy machinery shall not be used during the process of backfilling. The fill soil's compression factor has different requirements in different scenarios. Generally, it shall not be lower than 0.94. The foundation pit in the frozen depth area shall be backfilled with non-frost heaving materials. If it is located within the scope of the embankment and square, and the required compression factor of the embankment is greater than 0.94, it shall be carried out according to the required compression factor of the embankment. For the foundation pit of the inspection well located in the green space or farmland, the coefficient of embankment can be reduced appropriately but not lower than 0.85.
The inspection well was composed of reinforced concrete cover plate, well wall, cast-in-place reinforced concrete bottom plate and runner. The material of the well wall can be ordinary fired bricks, ordinary concrete bricks, or reinforced concrete on site. Among the materials of the wall, the strength grade of the common bricks was UMU15, the strength grade of the common concrete bricks was UMU20, and the mortar was M10 cement mortar. In terms of concrete materials, the strength grade of the pre-cast cover plate is C30; the strength grade of the reinforced concrete well wall and bottom plate is C30, and the impenetrability grade is P6; the strength grade of the plain concrete well is C25; and the strength grade of the cushion concrete is C15. The steel bars were HPDB300 and HPDB400. As for the runner, the brick-made well chamber runner should be built with the same materials as the well chamber; the concrete well wall well chamber runner should be poured with C15 concrete or built with M10 cement mortar with MU10 special bricks for the runner; the fall well runner and the gate slot should be built with C30 concrete.
This drawing is suitable for the circular drainage pipes without internal pressure outside the industrial and civil buildings in general cities and towns where the water quality conditions meet the urban sewage discharge conditions. If it is used in unfavorable geological sites such as wet and sunken yellow soil, expansive soil, permafrost, liquefied soil, corrosive soil (including corrosive underground water), it shall be treated separately according to relevant specifications and regulations; if it is used in areas with earthquake design intensity of 9 degrees and above, it shall be treated separately according to relevant standards and regulations. In addition, there was also a method to express the inspection well and a drainage inspection well engineering quantity query software website, calc.fycost.com/Engineering/WellS515.aspx (copy to the browser address bar and enter), which could help novices quickly find relevant inspection well data.
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