RU2472906C1 - Heat-saving abutment of insulated wall to insulated coating - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: heat-saving abutment of an insulated wall to an insulated coating comprises an external facing, an internal carrying and a middle insulating layers of the wall, a cover slab. The cover slab rests against the carrying layer of the wall or adjoins it. A steam insulation layer is laid onto the cover slab, as well as an insulant layer, a screed layer with sloping and hydraulic insulation. A parapet is arranged in the form of separate precast reinforced concrete L-shaped elements, which are mounted by one side onto a previously laid layer of the coating insulant with the required stiffness, at the same time the second side of the precast element forms a parapet fence.

EFFECT: increased heat resistance of a place of three-layer wall abutment to a coating with parapet organisation.

3 cl, 3 dwg

Description

The invention relates to the field of construction, in particular to the construction of stone and panel walls, and can be used in the construction of walls of buildings.

The known design of the adjacency of the wall insulation to the insulation covering the building with the organization of the parapet of wooden structures (DE 3203199, IPC E04D 13/15, publ. 04.08.1983).

The disadvantage of the invention is the fragility of the wooden products of the parapet and their limited strength for attaching the parapet fence of standard height.

Known heat-saving adjacency of a three-layer wall to the insulated coating at the location of the parapet, containing the outer facing, the wall layer, the inner bearing layer of the wall, the middle insulation layer of the wall, the coating plate, leaning on the adjacent wall layer or adjacent to it, a layer of insulation laid on the coating plate , a layer of vapor barrier on the coating plate, a layer of screed and waterproofing over the insulation in the coating. In the inner bearing layer of the wall, openings are arranged, the lower mark of which coincides with the mark of the vapor barrier layer laid on the coating plate, and the height of the openings is less than or equal to the thickness of the insulation. The width of the piers between the openings is determined by their bearing capacity to absorb loads from the parapet, and the openings themselves are filled with insulation (RU 2190734, IPC E04B 1/38, E04D 13/15, published March 10, 2002). Known design is the closest analogue of the claimed invention.

The disadvantages of the invention is the low thermal resistance associated with the presence of cold bridges in the inner bearing layer of the wall between the openings filled with thermal insulation.

The objective of the invention is to increase the thermal resistance of the junction of the three-layer wall to the wall of the coating with the organization of the parapet having a durability equal to the design durability of the supporting structures of buildings.

To solve this problem, the parapet is made in the form of separate precast concrete elements of the L-shaped form, which are mounted on one side on a pre-laid layer of insulation of the coating of the required stiffness, while the second side of the precast element forms a parapet fence.

The center of gravity of the parapet prefabricated element is outside the boundary of the bearing area and is offset from the side that forms the parapet itself, due to the combination of the thickness and width of the sides of the parapet, i.e. due to the increase in mass of the side resting on the layer of insulation of the coating in comparison with the side that forms the actual parapet fence, which ensures the stability of the precast element after its installation. In addition, the supporting side of the parapet is fastened with dowels through the insulation layer to the coating plates. The absence of cold bridges in the form of piers provides greater thermal resistance in comparison with the prototype.

This design makes it possible to use locally under the supporting side of the prefabricated parapet not only a rigid insulation in the form of extruded polystyrene foam, but also less rigid insulation. If their compressive strength is insufficient and to prevent their deformation under load in the form of creep in the area of the fixing dowels, point supports are arranged in the insulation layer, for which the point volume of the insulation is filled, which is filled with a solution. These point supports, being cold bridges, unlike the prototype, are not located in the corner zone of the building, which in itself is characterized by increased heat loss, but is distributed in the coverage area and have a smaller cross section in comparison with the prototype. In addition, these point supports can be excluded in the case of insufficiently rigid insulation under the supporting side of the prefabricated parapet due to the use of dowels, the design of which allows them to work not only in tension, but also in compression with shear.

Part of the height of the side of the precast concrete element, which is actually the parapet fence, can be replaced by a metal grill, which provides the required height of the fence with its minimum weight. At the same time, part of the height of the parapet fence made in reinforced concrete is determined taking into account the height of the ramp on the roof with an internal drain and the standard height of the roof covering on the vertical surface of the parapet fence. The fastening of the fence to the reinforced concrete parapet is carried out using electric welding or metal household joints, which ensures their strength at the joints, and the presence of reinforced concrete and metal products in the parapet design ensures their durability. In this case, there will be no cold bridges in the inner bearing layer of the wall.

The essence of the invention is illustrated by drawings, where Fig. 1 shows a cross section of the abutment of a three-layer wall to the insulated coating at the location of the parapet, Fig. 2 shows a longitudinal section of the parapet, and Fig. 3 shows a transverse section of the abutment of the three-layer wall to the insulated coating at the location of the device parapet in the case of soft insulation with its reinforcement with point supports.

The heat-saving adjacency of the wall to the insulated coating contains the outer, facing layer of the wall 1, the middle insulating layer of the wall 2, the inner supporting layer of the wall 12, the covering plate 11, leaning on or adjacent to the supporting layer of the wall, the insulation layer 9 laid on the coating plate, layer vapor barrier on the coating plate 10, a layer of screed with a ramp 5 and waterproofing 8 over the insulation. The parapet is made in the form of a separate precast concrete element of the L-shaped form 4, which is mounted on one side on a pre-laid layer of insulation with the required stiffness 7. Additionally, the supporting side of the parapet is fixed with dowels 6 through the insulation layer to the coating plates. The height of the parapet can be increased using a metal fence 3.

In the case of a soft insulation (Fig. 3) in the region of the fixing dowels, point supports 13 are arranged in the layer of insulation, for which a point volume of insulation is cut, which is filled with cement mortar.

Claims (3)

1. The heat-saving adjacency of the insulated wall to the insulated coating, containing the outer facing layer of the wall, the inner continuous bearing layer of the wall, the middle insulating layer of the wall, the coating plate resting on or adjacent to the bearing layer of the wall, the insulation layer laid on the coating plate, vapor barrier layer on the coating plate, a layer of screed and waterproofing over the insulation in the coating, characterized in that the parapet is made in the form of separate precast concrete elements of the L-shaped form, which are based on the insulation in PTFE coating. 2. The heat-saving adjacency of the insulated wall to the insulated coating according to claim 1, characterized in that, in the case of soft insulation, it can contain point supports in the area of the fixing dowels. 3. The heat-saving adjacency of the insulated wall to the insulated coating according to claim 1, characterized in that part of the height of the parapet fence can be replaced with a metal grill.

Images