Area of use

Beam - beam, T-connection Connection used to connect two concrete elements in a T-shaped configuration.	Beam - beam, Gerber connection Construction method used to connect two concrete beams, to form a longer section.	Adapt angels, horizontal Can be adjusted at angels up to 15°.
Adapt angels, vertical Can be adjusted at angels up to 15°.	Double connections BSF can be used in pairs to take heavy vertical loads.	Beam - round column BSF provides an efficient and elegant connection between beam and round columns.

Product serie BSF

All BSF units are marked with a color code and CE number.

BSF 225 kN

Article no	Description	Capacity	Picture
B 225	Beam unit Cast into the concrete beam and anchored with specified anchoring reinforcement.	225 kN
S 225	Knife Connecting the beam to the column. This is made of solid steel, and is the part of the connection that transfers the load from the beam to the column. Before beam assembly, the knife is retracted and hidden inside the beam unit.	225 kN
SF 225 B-B	Beam-beam unit Cast into the concrete beam and anchored with specified anchoring reinforcement.	225 kN
SF 225	Column unit Cast into the concrete column and anchored with specified anchoring reinforcement.	225 kN

BSF 300 kN

Article no	Description	Capacity	Picture
B 300	Beam unit Cast into the concrete beam and anchored with specified anchoring reinforcement.	300 kN
S 300	Knife Connecting the beam to the column. This is made of solid steel, and is the part of the connection that transfers the load from the beam to the column. Before beam assembly, the knife is retracted and hidden inside the beam unit.	300 kN
SF 300 B-B	Beam-beam unit Cast into the concrete beam and anchored with specified anchoring reinforcement.	300 kN
SF 300	Column unit Cast into the concrete column and anchored with specified anchoring reinforcement.	300 kN

BSF 450 kN

Article no	Description	Capacity	Picture
B 450	Beam unit Cast into the concrete beam and anchored with specified anchoring reinforcement.	450 kN
S 450	Knife Connecting the beam to the column. This is made of solid steel, and is the part of the connection that transfers the load from the beam to the column. Before beam assembly, the knife is retracted and hidden inside the beam unit.	450 kN
SF 450 B-B	Beam-beam unit Cast into the concrete beam and anchored with specified anchoring reinforcement.	450 kN
SF 450	Column unit Cast into the concrete column and anchored with specified anchoring reinforcement.	450 kN

BSF 700 kN

Artikkel nr	Beskrivelse	Kapasitet	Bilde
B 700	Beam unit Cast into the concrete beam and anchored with specified anchoring reinforcement.	700 kN
S 700	Knife Connecting the beam to the column. This is made of solid steel, and is the part of the connection that transfers the load from the beam to the column. Before beam assembly, the knife is retracted and hidden inside the beam unit.	700 kN
SF 700 B-B	Beam-beam unit Cast into the concrete beam and anchored with specified anchoring reinforcement.	700 kN
SF 700	Column unit Cast into the concrete column and anchored with specified anchoring reinforcement.	700 kN

BSF 1100 kN

Article no	Description	Capacity	Picture
B 1100	Beam unit Cast into the concrete beam and anchored with specified anchoring reinforcement.	1100 kN
S 1100	Knife Connecting the beam to the column. This is made of solid steel, and is the part of the connection that transfers the load from the beam to the column. Before beam assembly, the knife is retracted and hidden inside the beam unit.	1100 kN
SF 1100 B-B	Beam-beam unit Cast into the concrete beam and anchored with specified anchoring reinforcement.	1100 kN
SF 1100	Column unit Cast into the concrete column and anchored with specified anchoring reinforcement.	1100 kN

Memo/Technical information

Memo no 501	BSF, capacities and minimum beam and column dimensions.
Memo no 502	BSF, main dimensions.
Memo no 551	BSF, a short guide to BSF sliding inserts.

Reference levels- height difference

Hight differences between the reference level in the beam and column

Design principles

Table 1: Vertical forces (nominal)

The table is for “ideal” values of a, b and c.

Table 2: Vertical forces (maximum)

Larger forces arise when including unfavorable tolerances on location of anchorage reinforcement (± 5mm) as well as construction site deviation (10mm).

For calculation, use memo BSF Calculating XL.

More info, see memo no. 551 and 521.

Memo no 552	BSF, production
Memo no 521	BSF, design of reinforcement
	BSF Calculations

Standard reinforcement - Beam

e.g.: Reinforcement in beam ends BSF 225 with ultimate load 225 kN

The amount of reinforcement and final shape in several of the bars must be determined in each case. This can be done accordance to procedures given in Memo. Concrete Quality C35 and beam dimension: W × H = 300 × 450 is used in the example. This beam dimension corresponds approximately to minimum beam cross-section in order to exploit the unit’s capacity. For more information see memo 522a-e.

Memo no 522a BSF 225	BSF 225, reinforcement in beam end
Memo no 522b BSF 300	BSF 300, reinforcement in beam end
Memo no 522c BSF 450	BSF 450, reinforcement in beam end
Memo no 522d BSF 700	BSF 700, reinforcement in beam end
Memo no 522e BSF 1100	BSF 1100, reinforcement in beam end

Standard reinforcement - Column

The figure illustrates the recommended principal reinforcement localy to the column unit. A portion of the vertical force will spread into the column thru the reinforcement bar welded to the bottom of the steel plate, while the remaining force will go into the column thru distributed concrete stress underneath the steel plate. Splitting forces will occur due to horizontal spreading of the forces into the cross section of the column. The amount of reinforcement in Zone 1 can be calculated in accordance with Memo 521. An example of the amount of stirrups in Zone 1 based on calculations in Memo 521 is given in below Table 1.

Memo no 521	BSF, design of reinforcement.
Memo no 523	BSF, example reinforcement pattern in column

Standard reinforcement- horizontal anchoring

Memo no 502

BSF, main dimensions

1. BSF (Beam-column connection)

2. B (Beam-unit)

3. SF (Column-unit)

4. SF B-B (Beam-beam-unit)

Beam - beam, T-connection

Beam cross-section and secondary beam suspension point in the longitudinal direction of the main beam will vary. This may produce different varieties of force once the main beam and the exact load bearing behavior must be assessed in each case. This will vary depending on the geometry of the compound and may arise at the transmission which is not covered by example in the calculations.

For more information, see memo 526.

Memo no 526

BSF, design of reinforcement T-connection beam-beam

Beam - beam, Gerber-connection

This section deals with BSF used for beam-beam joints on long beam spans (Gerber joints). Reinforcement of the beam end with a simple BSF knife is given in memo 521, so only reinforcement of the beam end with a simple BSF beam box is dealt with here. As beam geometry, concrete quality and load application will vary from case to case there may be aspects of the load transfer that are not covered in this memo.

For more information, see memo 525.

Memo no 525

BSF, design of reinforcement cantilivered beam-beam

Double connections

As an alternative for large connections, it is possible to use BSF in pairs.

For more information, see memo no 524 and 550.

Memo no 524	BSF, design of reinforcement, units used in pairs
Memo no 550	BSF, practical advice for units in pairs

Diagonal connections

For more information, see memo no 508.

Memo no 508

BSF connection solution

Fire protection, corrosion and winter conditions

The sides and bottom perimeter of the space between the beam end and the column can be sealed with a
backing strip, and the joint concreted. If it is desirable, a fire resistant sealant can be used to cover the backing
strip. Alternatively, the backing strip can be removed.

For more information, see memo no 509.

Memo no 509

BSF, winter conditions fire protection & corrosion.

Installation

Torsion – propping. More info, see memo no. 505. Temporary support. Must be calculated in each individual case.
Vertical position of the beams. More info, see memo no. 541. Pulley for adjustment of the beam.
Adjustment of joints. More info, see memo no. 540.
Filling and sealing of joints. More info, see memo no. 540.

For more information about installation, see memo/technical information:

Memo no 505	BSF, torsion
Memo no 540	BSF, installation on site and sealing of joint
Memo no 541	BSF, plumb position of beams

Fly Seismic - solutions for earthquake Advantages of the Fly Seismic system
Moment connection between beam and column. Shorter construction time with precast. Fast and efficient installation. No propping needed. Less concrete consumption. No corbels = freedom in design. Tested and approved. Design tools and software.

Area of use

Commercial buildings/office with Fly Seismic.

The system can be used in high buildings.

Fly Seismic can be used in apartment buildings.

Brochures for downloading

					BSF Connections
					BSF Calculations