Residential two-section five-story building

Contents

Contents

Characteristics of the building

1. Design Solutions

1.1 Foundations

1.2 Columns and girders

1.3 Walls and partitions

1.4 Overlaps

1.5 Stairs

1.6 Coating (roof)

1.7 Floors

1.8 Windows and doors

1.9 Wall Finishes

2. Construction thermophysics

2.1 Heat Engineering Calculation

2.2 Sanitary equipment

3. Technical and economic indicators (TEP) of volume planning solutions

4. Specification of precast reinforced concrete products

Literature

Characteristics of the building

The building of a five-story residential building is designed on the basis of

SNB 3.02.04 - 03 "Residential buildings." The construction site is Pinsk.

The building has a rectangular plan shape with dimensions of 50 m by 15.4 m.

The building has 5 floors. The height of the floor is 2.8m. The building is designed with a basement.

The building is framed. Structural diagram of the building with transverse arrangement of girders. The spatial rigidity and stability of the building is ensured by the rigid conjugation of the frame elements in the nodes; installation of stiffening vent diaphragms connected to columns and ceilings; by laying bond and wall slabs between the columns of the building. Roof of separate structure with warm attic, with internal organized drainage.

In case of fire, people will be evacuated from the building through the stairwell.

In terms of durability, the building belongs to the III degree, since its structural elements are designed for a service life of up to 100 years.

In terms of fire resistance in accordance with NSS 2.02.01 - 98 "Fire-technical classification of buildings, structural rooms and materials" the building refers to the II degree of fire resistance.

Functional Fire Safety Class-F1.1.

The responsibility class of the building is II.

Safe operation of the building is ensured by the following measures: the use of load-bearing elements of the building, inter-floor floors, external self-bearing walls, internal walls, stairways, with a fire resistance rating of the 1st group; clearances of 100mm are provided for passing fire hoses between stairs marches; access to the roof is provided from the staircase, along the metal ladder-ladder.

Design Solutions

1.1 Foundations

In the building, prefabricated cast-in-situ reinforced concrete columnar foundations were designed according to the 1.0201 series.

Elevation of foundation cut 2.600, foundation feet under the columns of the extreme row 4.200 mm, elevation of foundation foot under the columns of the middle row 4.500 mm. Foundation depth is 3.1 and 3.4 m.

Lay the foundations on a carefully planned and sealed surface of the base.

The foundation consists of a sub-column and one (under the columns of the extreme row), two (under the columns of the middle row) stages of the slab part .

The height of the steps is 300 mm.

Foundations have two types of dimensions:

1500 × 1500 mm with a sub-column 900 × 900 mm.

2100 × 2100 mm with a sub-column 900 × 900 mm.

Clearance between column faces and cup walls is accepted along the top 75 mm, along the bottom 50 mm, and between the bottom of columns and the bottom of the cup 50 mm. The minimum thickness of the cup wall at the top is 175 mm.

Foundation beams are used to support the basement panel

series 1.4151 issue 1 trapezoidal section 400 mm high. Foundation beams rest on concrete columns arranged with a section of 300 × 600 mm, within the columns. Elevation of foundation beams top 0.030. The length of the foundation beams is coordinated with the pitch of the columns, the dimensions of the sub-column, and the place of laying. To prevent the beams from deformations in case of soil bundling, coarse sand is filled from below and from sides .

Horizontal waterproofing consisting of two ruberoid layers according to P8 - 2000 shall be laid on foundation beams at the resting point of walls.

to SNB 5.01.0199.

To protect the foundations from surface water along the perimeter of the building, asphalt concrete paving with a width of 1 m along the crushed stone base with a thickness of 120 mm with a slope of more than 3% from the building.

1.2 Columns and girders

In the building, columns are designed with a single section of 400 × 400 mm according to the series 1.0201. Columns are divided into lower, middle and upper. All columns have a central reference to the main layout axes of the building. Single-cantilever columns are designed along extreme axes, and two-cantilever columns are designed along middle axes.

Joints of columns in height contact with welding of lengthwise reinforcement outlets and with monolinking of coupling unit.

Girders are designed with a T-section with a height of 450 mm according to the 1.0201 series with a lower shelf to support the floor slabs, which reduces the total height .

The choice of the type of crossbar is due to the load on the floor and the type of plates of its components. Coupling of the crossbar with the column is hinged with a hidden cantilever and welding of the bottom of the crossbar to the embedded part of the column console.

For double-sided and one-sided support of floor slabs, double-shelf and single-shelf girders and girders for supporting stair marches are designed. There are also designed non-ceiling girders installed in the stairwell along the external walls, designed to work as elements of the slab disk at the points of its rupture by the stairwell.

1.3 Walls and partitions

The external walls in the building are made of three-layer wall panels, the thickness of the walls is selected in accordance with the thermal design on the basis of TKP 452.04-43-2006 "Construction heat engineering" and is 300 mm. The cutting of the walls is single-row. Snap panels to single axes - 200 mm.

Panel joint is drained. The design of this joint allows floor-by-floor removal of moisture entering the joint. Moisture flows down through the decompression channel, here through the drainage hole at the intersection of vertical and horizontal joints with a water discharge apron is discharged to the outside.

Inter-apartment partitions are made of cellular blocks with thickness of 200 mm, inter-room partitions are designed of cellular blocks with thickness of 100 mm.

Ventilation diaphragms are designed for the ventilation ducts device. They are mounted from concrete panels with a height of 260 mm thick, having cantilever shelves on both sides for supporting floor slabs. In vertical joints, diaphragms are connected to each other by welding embedded parts with subsequent grouting. Horizontal joint of diaphragms is contact.

1.4 Overlaps

In the building, prefabricated reinforced concrete floors from multi-pillar slabs according to the series 1.020 - 1/83, 220mm thick are designed.

The floor elements are divided into row and joint (spacer plates), transmitting horizontal forces to the columns. The main coordination dimensions of the floor elements in width: for ordinary multistage plates 1.2 and 1.5 m, for wall and connected 1.5 m.

Seams between slabs are filled with concrete of class B15 on fine aggregate. Anchoring of slabs between failures is performed by welding of steel rods from reinforcement of class S240.

Flooring operation as horizontal stiffening diaphragms is provided by welding of girders to column consoles, welding of connected floor panels to each other and to the girder, by grouting of keyways between all floor elements with concrete.

1.5 Stairs

Stairways are designed according to the 1.0201 series of stairways with half-sites 1.35 m wide, located in staircases.

In case of fire, people will be evacuated from the building through the stairwell.

A clearance of 100 mm is provided between the marches to allow free passage of the fire hose.

Stairways have fences 0.9 m high. The handrail is polyvinyl chloride and is attached to the steel strip of the fence. The slope of the marches is 1:2, the width of the steps is 300 mm, the height is 150 mm.

The entrance platform and porch in the building have metal handrails 0.9 m high. At the entrance platforms, gratings are provided for wiping legs according to the B1.156.2-1 RN7.5 series with a size of 1000 × 500 mm.

External porches are made of monolithic concrete B20. The width of the stages is 300mm, the height is 150mm.

For access to the roof there is a metal ladder-ladder.

1.6 Coating (roof)

The roof structure is designed in accordance with SNB 5.08.01 - 2000 "Roofs" and Appendix P1 - 03 "Roofing Design and Construction."

In the building, a separate roof with a warm attic is designed.

Roof composition (top to bottom):

- one layer K- St - Be - K/PP - 4.0 (STB 1107-98);

- two layers K - St - Be - M/PP - 3.0 (STB 1107-98);

- trimming of MBPB STB 12622001 surface - 2 mm.

- bracing from cement-sand mortar M100 - 30 mm;

- heat insulation from PTJ boards p = 400 kg/m3 as per STB 103496 - 400 mm;

- expanded clay p = 600 kg/m3 0-200mm;

- vapor insulation layer 1 of polyethylene film - 2 mm;

- base - reinforced concrete slab - 220 mm.

The internal drainage is organized, arranged with a slope of i = 0.03. In the lowered places there are two water intake funnels with risers that enter the storm sewer. The diameter of the funnel is 100 mm.

On the roof of the tambours, an external organized drainage along the gutters is designed.

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