Architectural and space-planning solutions

The project documentation provides for the construction of a stationary gas station with a service building and a canopy over fuel dispensers. The service building and the canopy over the fuel dispensers are the components of the filling station complex, designed for refueling cars and trucks, as well as servicing drivers and passengers. The service building is a single-storey frame building without a basement or an attic, rectangular in plan, with dimensions in the extreme axes of 15,97 x 11,60 m. The greatest height of the vertical plane of the facade from the planning ground level (-0,150 m) to the top of the parapet is 4,23 m. The height of the premises to the bottom of the suspended ceilings is 2,5 m, 2,75 m. The mark of the clean floor of the building is taken as a relative mark of 0,000. The building houses: a customer service room, a control room, a store with a fast food area (cafe), a utility room for a cafe, a pantry for food products, a pantry for non-food products, an electrical panel room, bathrooms for staff and visitors, utility rooms, a water meter unit, a staff wardrobe with showers. The main entrance to the building is designed from the side of the main facade. The main facade of the building is oriented towards the territory of the station. The stained-glass window occupies the main area of ​​the main facade. The frame is metal. Walls - sandwich panels 150 mm thick with mineral wool filling. Partitions - from plasterboard sheets on a metal frame with mineral wool filling, 98 mm and 125 mm thick, in a simple and moisture-resistant design. Stained-glass window, stained-glass windows and doors - aluminum profiles filled with double-glazed windows with anti-shock film. Window blocks - aluminum profiles filled with double-glazed windows. Doors - metal, metal-plastic and wooden, in accordance with GOST and individual production, in the usual and fire-resistant design. The roof is flat, combined, with a roof made of rolled materials (the top layer is with gravel protection) on a profiled steel sheet along girders and beams. The drain is internal. The surface of wall sandwich panels in white color is made with a prefabricated polymer coating. The plinth is made of cladding facade panels with a gray polymer coating. Stained glass, window and door blocks, bindings, frames, plums and fittings are white. The interior decoration of the premises and the floors are designed in accordance with the purpose of the premises: floors - cement-concrete with a polymer coating, with a coating of ceramic tiles, ceramic granite tiles, TZI linoleum; internal lining of external wall panels - from GKL and GKLV, followed by painting with water-based paint or facing with ceramic tiles or wallpapering; suspended ceilings - type "Armstrong" and slatted; hemmed ceilings - from GKL sheets with water-based coloring. The building's external enclosing structures are adopted on the basis of thermal engineering calculations and comply with the requirements of SNiP 23-02-2003. Premises with permanent residence of people are designed with natural light. A canopy is designed above the fuel dispensers and above the space between the service building and the fuel dispensers. The canopy over the fuel dispensers is a modular-frame structure, the rectangular projection of which has a plan size of 23,30 x 10,52 m. The highest height from the planned ground level (-0,150 m) to the top of the roof is 5,50 m. . The roof is flat, with corrugated steel sheet roofing over girders and beams. The drain is internal. Covering under the canopy - concrete non-sparking and oil and petrol resistant tiles. The finishing material is a smooth metal sheet with a polymer coating. Measures are envisaged to ensure the accessibility of the building and facilities for people with limited mobility. Evacuation entrances and exits to the building are equipped with a ramp. The ramps have a width of at least 1,20 m, the slope is within 5%, the surface is hard, non-slip. Doorways do not have thresholds. The width of the door panels is assumed to be at least 0,9 m.

Structural and space-planning solutions

The service building and the canopy are designed in a steel frame. Level of responsibility – II. The spatial immutability of the building frame is ensured by the joint work of the columns, rigidly fixed in the foundation, and the hard disk of the roof. The node for supporting the roof beams on the columns is designed as a hinged one. The sections of the main load-bearing structures of the frame were adopted: columns - bent closed welded square sections according to GOST 30245-2003 from steel C245; covering beams - I-beam according to STO ASChM 20-93 from steel C245. As external enclosing walls, hinged wall panels of the “sandwich” type with a thickness of 150 mm are used, the covering is roofing panels of the “sandwich” type with a thickness of 200 mm. A fachwerk system has been developed for fixing wall panels. The foundation for the building is an unburied monolithic reinforced concrete slab 180 mm thick with monolithic ribs along the contour and under columns 500 mm high. Under the foundations, bulk soil is sampled, followed by the installation of an artificial base and embankment. Foundation material - concrete B20, W4, F50. To prevent freezing of the foundation slab, it is provided for its insulation with foam boards. The spatial invariability of the canopy frame is ensured by the joint operation of the columns, which have a rigid support unit on the foundation, and a hard disk of the profiled flooring, which is fastened with self-tapping screws in each wave. The roof beams are hinged on the columns. The sections of the main load-bearing structures of the canopy frame were adopted: columns - double channels according to GOST 8240-97 from steel C245; the main roof beams are I-beams according to STO ASCHM 20-93 from steel C345, corrugated board - H75-750-0.8. The foundation for the canopy columns is monolithic reinforced concrete columnar concrete B20, W4, F50. Under the foundations of the canopy, an artificial foundation is arranged. In accordance with the report on engineering and geological surveys, the base of the sand cushion of the canopy foundation is the EGE-1 layer (solid loams), which has the following characteristics: ρн=2,12 t/m3; e=0,503; CII=0,48 kg/cm2; E=160 kg/cm2. The design soil resistance of the EGE-1 base is R = 2,50 kg / cm2. Foundations of underground tanks - on a natural basis in the form of a monolithic reinforced concrete slab 400 mm thick, concrete B20, W4. The basis for the foundations for the reservoirs is the EGE-2 layer (semi-solid and solid loams), which has the following characteristics: ρн=2.12 t/m3; CII=0,38 kg/cm2; e=0,537; E=130 kg/cm2. The design of the foundations provides stability against ascent. All foundations are arranged according to concrete preparation. The project documentation provides for coating waterproofing of the outer faces of the foundations in contact with the ground. The retaining wall holding the embankment is monolithic reinforced concrete. The retaining wall is separated by expansion joints every 20 m. The calculation of the main load-bearing structures of the frames was carried out using the SCAD R11.3 software package. The displacements and deflections obtained as a result of the spatial calculation of the building frame do not exceed the allowable values.

Engineering equipment, utility networks, engineering activities

Power supply of electrical receivers of gas stations of all categories according to the reliability of power supply in normal mode is provided from the centralized power supply system through one cable gland: in emergency mode - from an autonomous diesel generator 125 kVA; in the post-emergency mode - from an autonomous uninterruptible power supply, but only from power receivers of security systems (the first category in terms of power supply reliability). The total rated power of the electrical installation is 85 kVA, including the rated power of electrical receivers of security systems 4,2 kVA. Grounding system for open conductive parts TN-S (separate, PE conductor of the cable of the corresponding electrical receiver). To ground the neutral of the generator (working zero), an additional charger is provided, the resistance of which is ≤30 Ohm, the resistance of the multifunctional charger is ≤4 Ohm, taking into account natural grounding. Schematic and design solutions of the designed electrical installation ensure the electrical safety of non-categorized and operating personnel (solid insulation, shutdown of non-stationary processes, lack of touch voltage, etc.), grounding and potential equalization systems are designed in accordance with the standards. Communication networks connect to public networks through mobile systems, provide information reception and transmission, and increase the safety of gas station personnel and fuel buyers. Water supply (cold water) to consumers of the facility, in accordance with the UE, is provided from one input of the water supply network with a diameter of D = 63 mm from pressure pipes PE100 SDR17-63x3,8 PN 10 with the laying of a water supply network along the Pulkovo highway with connection to the existing water supply network D = 200 mm. At the input, a water metering unit is provided according to TsIRV 02A.00.00.00 (l. 16-17). Guaranteed head at the connection point 22 m. water Art. Estimated consumption of cold water 7,89 m3/day, including: for household and drinking needs 1,78 m3/day; for irrigation of the adjacent territory 6,11 m3/day. A drinking water supply system has been designed for the building. The required pressure for the drinking water supply system is 9,95 m. Internal fire extinguishing of the gas station building is not provided in accordance with clause 6.5a*, tab. 1* SNiP 2.04.01-85* and NPB 111-98*, p. 94, Rev. 2. For watering the territory on the outer wall of the building, 1 watering tap D = 25 mm is provided. External fire extinguishing is provided from two projected fire tanks with a volume of 50 m3 each, installed at the gas station site. The water consumption for external fire extinguishing of gas stations is assumed to be 10 l/s. To prepare hot water for the DHW system, it is planned to install a local storage water heater manufactured by Electrolux, V = 100 l. The estimated consumption of hot water for household and drinking needs is 0,88 m3 / day. Hot water temperature (Тз) – 65°С. Required pressure - 9,05 m.a.c. Disposal of domestic wastewater in the amount of 3262 m75/day is provided for in well No. 1,78 on the household sewerage network D = 3 near house No. 65, lit. And along the Pulkovskoye Highway, the drainage of rainwater with a flow rate of 15,875 l / s is provided through local treatment facilities with a capacity of 6 l / s with a bypass branch of the Ecoplus company into the ditch. The following systems are designed for the building: domestic sewerage; internal drains. A ladder is provided to remove wastewater from the water metering unit. Pressure sewer pipes PE 100 SDR17-110x6,6 PN10 according to GOST 6942.3-98 were selected for the installation of domestic sewage systems. PVC pipes according to GOST 9583-75 were selected for the device of the internal drainage system. External water supply networks are laid at a depth of 1,8-2,14 m. External sewerage networks are laid at a depth of 2,4-0,5 m. The heat supply source is an electric boiler installed in the gas station building (in a separate room). The heat carrier is water with a temperature of 80-60 ° C. The heating system of administrative and amenity premises is a two-pipe horizontal radiator with a dead-end movement of the coolant. Heating devices - panel radiators. To balance the heating system, automatic valves of the Danfoss type are installed. For the installation of heating systems, steel water-gas and electric-welded pipes (mains and risers) were selected. In the premises of the trading floor, an air heating system combined with ventilation was designed. To provide emergency heating, it is planned to install mobile oil-filled electric radiators stored at the gas station. Ventilation - forced-air and exhaust with mechanical and natural motivation. The air flow rates for the premises are determined by calculation, according to the sanitary standard and according to the frequency of air exchanges. Placement of equipment - in the false ceiling of the corridor and serviced premises. A ventilation unit with heat recovery installed on the roof of the building is provided for the trading floor and in the staff's amenity premises. Air exchange in the trading floor is determined by the calculation for air heating. To maintain the air temperature in the trading floor and in the amenity premises, the installation of air conditioners is provided. Indoor units - cassette for the trading floor - are installed in the construction of a false ceiling, wall-mounted for the staff's amenity rooms - on the wall.