Thermotec A, A1

Download

Thermotec is a safe and easy to install method of connecting the ceiling with the balcony slab. Its main advantages are:

a small amount of space for transport and storage,
simple installing thanks to the possibility of screwing bars into the connector,
sleeves and the lack of welded transverse bars,
easy adaptation to new applications,
sleeves made of stainless steel with a yield point not less than 210 MPa and,
a tensile strength not less than 500 MPa.

Thermotec A balcony connectors enable the transfer of transverse forces and bending moments acting in the connection.

Characteristics of the Thermotec A connector:

Slab thickness: h=160 – 250 mm,
Insulation thickness of 80 mm – resole foam with the coefficient λ=0.021,
Minimum concrete strength class: C20/25,
- Fire resistance: REI60 in a variant with a top firestop plate,
  REI240 in a variant with two plates,
It is possible to manufacture bars in the A1 version with bent reinforcing bars.

Thermotec A - designation scheme

For the correct operation of Thermotec A balcony connectors, the minimum ratio of the moment and the shear force specified in the table is required

convering c =30 mm
h [mm]	160	170	180	190	200	210	220	230	240	250
e_min [m]	0,13	0,15	0,17	0,19	0,21	0,24	0,26	0,26	0,28	0,30
convering c =35 mm
h [mm]	165	170	180	190	200	210	220	230	240	250
e_min [m]	0,13	0,14	0,16	0,18	0,20	0,21	0,23	0,25	0,26	0,29
convering c =50 mm
h [mm]	-	-	180	190	200	210	220	230	240	250
e_min [m]	-	-	0,13	0,15	0,17	0,19	0,21	0,22	0,24	0,26

Connector dimension

Connector type	Number of sleeves	Number of bars	Number of bearings	c	L	H	L_bd
Connector type	Number of sleeves	Number of bars	Number of bearings	mm	mm	mm	mm
4x14-1000	4	8	4	30-50	1000	160-250	As a standard, 75 cm for a straight bar. The anchorage/overlap length is a always selected individually for Thermotec A1 connectors.
5x14-1000	5	10	5		1000
6x14-1000	6	12	6		1000
7x14-1000	7	14	7		1000
8x14-1000	8	16	8		1000
2x14-500	2	4	2		500
3x14-500	3	6	3		500
4x14-500	4	8	4		500
2x14-250	2	4	2		250

Lambda equivalent table of Thermotec A connectors

Connector height	160		170		180		190		200		210		220		230		240		250
Typ	λ_eq	Req	λ_eq	Req	λ_eq	Req	λ_eq	Req	λ_eq	Req	λ_eq	Req	λ_eq	Req	λ_eq	Req	λ_eq	Req	λ_eq	Req
4x14-1000	0,32	0,25	0,31	0,26	0,29	0,27	0,28	0,29	0,26	0,30	0,25	0,32	0,24	0,33	0,23	0,34	0,22	0,36	0,22	0,37
5x14-1000	0,40	0,20	0,38	0,21	0,36	0,22	0,34	0,23	0,32	0,25	0,31	0,26	0,30	0,27	0,29	0,28	0,27	0,29	0,26	0,30
6x14-1000	0,48	0,17	0,45	0,18	0,43	0,19	0,40	0,20	0,39	0,21	0,37	0,22	0,35	0,23	0,34	0,24	0,32	0,25	0,31	0,26
7x14-1000	0,55	0,14	0,52	0,15	0,49	0,16	0,47	0,17	0,45	0,18	0,43	0,19	0,41	0,20	0,39	0,20	0,38	0,21	0,36	0,22
8x14-1000	0,63	0,13	0,59	0,13	0,56	0,14	0,53	0,15	0,51	0,16	0,48	0,17	0,46	0,17	0,44	0,18	0,43	0,19	0,41	0,20
2x14-500	0,32	0,25	0,31	0,26	0,29	0,27	0,28	0,29	0,26	0,30	0,25	0,32	0,24	0,33	0,23	0,34	0,22	0,36	0,22	0,37
3x14-500	0,48	0,17	0,45	0,18	0,43	0,19	0,40	0,20	0,39	0,21	0,37	0,22	0,35	0,23	0,34	0,24	0,32	0,25	0,31	0,26
4x14-500	0,63	0,13	0,59	0,13	0,56	0,14	0,53	0,15	0,51	0,16	0,48	0,17	0,46	0,17	0,44	0,18	0,43	0,19	0,41	0,20
2x14-250	0,63	0,13	0,59	0,13	0,56	0,14	0,53	0,15	0,51	0,16	0,48	0,17	0,46	0,17	0,44	0,18	0,43	0,19	0,41	0,20

Assembly instructions- Thermotec A

Installation of balcony connectors when balconies are made on site.

Installation and levelling of formwork.
Installation of bottom reinforcement.
Installation of Thermotec connectors body.
Installation of screwed reinforcement (bars should be screwed inas far as it will go - min. 14 mm).

Installation of balcony connectors when balconies are made in prefabrication workshop

Preparation of the slab in the prefabrication workshop.
Installation of the prefabricated element at the destination place after it has been transported to the construction site.
Installation of reinforcing bars of the Thermotec system.
Binding the reinforcement and pouring the ceiling slab.

Notes:
- strictly observe the assembly direction marked on the connector,
- the presented diagram is a recommendation that draws attention to the most important aspects of connector assembly.

Specific cases and solutions used on the construction site may need to be completed. The contractor is responsible for the correct installation method. In order to clarify any questions or doubts, please contact the EXTREA technical department.

Thermotec A – retrofitting

Tensile reinforcement section of connectors (in cm²/m)

Connector	Tensile reinforcement	Minimum reinforcement of the edge of the balcony/slab
Connector	cm²/m	Minimum reinforcement of the edge of the balcony/slab
A-4x14-1000	6,16	Φ 8 every 25
A-5x14-1000	7,70	Φ 8 every 20
A-6x14-1000	9,24	Φ 8 every 15
A-7x14-1000	10,78	Φ 8 every 13
A-8x14-1000	12,32	Φ 8 every 12,5
A-2x14-500	6,16	Φ 8 every 25
A-3x14-500	9,24	Φ 8 every 15
A-4x14-500	12,32	Φ 8 every 12,5
A-2x14-250	12,32	Φ 8 every 12,5