Construction of a multi-apartment 6-9 storey residential building on Stryyska street in Lviv
Students Name: Makar Viktor Stepanovych
Qualification Level: magister
Speciality: Industrial and Civil Construction
Institute: Institute of Civil Engineering and Building Systems
Mode of Study: part
Academic Year: 2023-2024 н.р.
Language of Defence: ukrainian
Abstract: Makar V.S., Kunanets Y. M. (head). Construction of a multi-apartment 6-9 storey residential building. on the street Stryyska in Lviv. Master’s thesis - Lviv Polytechnic National University, Lviv, 2023. • Advanced annotation. The architectural and construction section contains information related to the building site. Here are included the main decisions regarding the general plan, volume-planning and architectural-constructive aspects, key technical and economic indicators, as well as data on engineering and technical equipment and climatology of the given construction area. According to the master plan, the technical and economic indicators are: the area of the land plot - 0.8898 ha., the built-up area - 2894 m2, the area of the planned building - 662.5 m2. The note indicates the direction of the winds with the orientation of the buildings. In accordance with the task envisaged by the project, parking spaces and a recreation area near the shopping and office center were designed. The overall dimensions of the building are 35.75 x 16.80 m. in axes. The building has a simple rectangular shape in plan. The maximum height of the building is 37.3 m. The number of floors is 9 floors with an underground parking lot, a technical floor, a mezzanine and a used roof. • Basic constructive solutions: 1. The structural structure of the building includes a rigid frame, which consists of monolithic reinforced concrete columns and stiffness diaphragms. 2. The project provides for the installation of pile foundations using 30x30cm and 35x35cm driven piles, 8 to 12 m long. depending on the location of the soil. The piles are connected to each other by monolithic grates 600mm - 1200mm thick, according to the calculation results. Reinforcement outlets for arranging columns and walls are provided from grills. The material of the slab is heavy concrete of class C20/25. 3. The construction of the external walls and facades is brickwork 250 mm thick, with insulation of 100 mm hard wool, the decoration is carried out with a cement-perlite mortar with subsequent painting with frost-resistant and moisture-resistant facade paints according to the task. Also, the facade is formed from projections of monolithic slabs, which are decorated with a different type of finishing material. 4. Columns - reinforced concrete, variable section. Column reinforcement "drop-in" without welding. 5. The ceilings are made in the form of monolithic reinforced concrete structures with a thickness of 200 mm and double reinforcement. The main part of the ceiling has a boltless structure, but in some areas the use of monolithic beams is provided. 6. The stairwell is reinforced concrete, rests on the monolithic walls of the stairwell. • The calculation and construction section consists of the calculation and design of 4 load-bearing structures of the frame of the house. 1. C20/25 concrete covering slab. We accept the background (main) lower reinforcement - ?12 A400С with a step of ?? = 200 mm. In places of larger moments, the main reinforcement is not enough, therefore we additionally install rods up to ?14 with a step according to the calculation. The upper mesh of the reinforcement (background): We accept ? ?10 A400С with a step of ?? = 200 mm. In places of larger moments, the main reinforcement is not enough, so we additionally install rods up to ?16 with a step according to the calculation. Structurally, we install additional reinforcement to frame the ceiling openings. Since there are additional forces in the places of the holes. We install reinforcement ?12 with a step of ?? = 50 mm. 2. Mezzanine slab. The effort on the mezzanine is obtained from the calculation of the frame in the "DLUBAL FREM" PC program. Reinforcement is carried out according to the coating. 3. The calculation of the monolithic reinforced concrete beam was carried out according to the largest moments taken from the Dlubal RFEM software complex and is carried out according to three calculations: manual according to DBN, manual according to Eurocode 2 and using the Dlubal RFEM PC. Concrete C20/25 working reinforcement A400S, clamps A240S. In the support areas, the step of the clamps is reduced. 4. Reinforced concrete stairs are two-step and consist of structural elements of two types: platforms (slabs) and passage steps. Marches and stairs are reinforced concrete monolithic slabs that work in bending as beams on two supports. we accept the longitudinal working armature of the stairs ?12 mm, and the step ?? = 150 mm. We take the transverse armature with a diameter of ?10 mm and a step of ?? = 150 mm, since the span in the transverse direction is much smaller - 134 cm. • The technological and organizational section includes the development of a construction master plan, a technological map for waterproofing the foundation and the development of a calendar schedule. In the fourth section, calculations of local, object and consolidated estimates were carried out based on technical and economic indicators of the building. In the scientific part, the study of the joint operation of piles and grid in strip pile foundation was conducted. The calculation scheme of the strip pile foundation was created and mathematical modeling was carried out, according to the compiled program of experimental research. The pitch of the piles varied only in the longitudinal direction. As a result, it was investigated that taking into account the share of the load that the low grid can take (from 7% to 70%, depending on the length and pitch of the piles, as part of the foundation), significantly increases the bearing capacity of the foundation as a whole and allows saving material and labor resources under time of construction works.Keywords: reinforced concrete slab, column, reinforcement, concrete, residential building.