DescriptionFreyssibar+ bars are produced using a heat treatment process that delivers enhanced mechanical performance.They offer a superior combination of mechanical strength and ductility to conventional prestressing bars.Freyssibar+ bars are especially suited to prestressing, strapping and lifting operations, where their mechanical strength can be leveraged to develop space-saving solutions.

BenefitsCompared to conventional prestressing bars, Freyssibar+ bars offer a number of benefits:

• Higher yield and breaking strength

• The steel's characteristics are distributed more evenly across the entire section of the bar

• Good fatigue resistance

Datasheet reference: FT En CIII 3.1

Freyssibar+

CNIT, France

FT E

n C

III 3

.1

Prestressing sheaves, Hammersmith Flyover, United Kingdom

The main run of the bar is smooth, while the ends are threaded.The cold-formed thread complies with ISO 965-1.

The main mechanical characteristics of Freyssibar+ bars are as follows:

Young elastic modulus: E = 200 GPa

Relaxation after 1,000 hrs: 4% at 0.7xRm

Elongation at maximum force*: Agt ≥ 6%

Elongation at break: A ≥ 10%

Technicalspecifications

Prestressing bars• Very high elastic limit• Ductility

* Measured on a specimen

Anchors and couplers

www.freyssinet.com

All rights reserved by FREYSSINET. Product names are trademarks of FREYSSINET. The information in this document is subject to change.Whilst it is as accurate as possible, it is not in any way binding on FREYSSINET.

FT E

n C

III 3

.1

Quality assuranceThe quality management system at the Freyssibar+ factory is certified to ISO 9001:2015.Every delivery is accompanied by a type 3.1 inspection certificate in accordance with EN 10204 for each batch of bars.Each bar is identified by its heat treatment batch number.

SpecificrequirementsFreyssibar+ bars are available in maximum lengths of 11.80 m. They are supplied with threaded ends, and the thread length can be adjusted on request.Freyssibar+ bars can be produced in larger diameters on special request.

ProtectionAs a general rule, bars are permanently protected on site by injecting a flexible product (petroleum wax, grease, etc.) or a rigid product (cement grout). Bars can also be supplied (such as precast elements) with different types of corrosion protection applied in the factory:

• Protection with anti-corrosion wax tape

• Anti-corrosion heat-shrink sleeve

• Wax injection

Freyssibar+

The range of bars

There are two types of anchor (flat and spherical) and a range of couplers that are scaled to withstand the bar's ultimate strength and transmit all the prestressing forces to the structure.

Flat washer

Straight nut

Anchor plate

Flat anchors

Spherical anchors

Spherical anchors comprise a plate, nut and spherical washer. They can be used to compensate for certain perpendicular alignment issues between the bar and the structure.

Flat anchors comprise an anchor plate, washer and straight nut.They are used in most cases.

Couplers are designed to connect bars together. They feature a central stop to ensure that both bars are screwed symmetrically.

Thread characteristics

Main run characteristics (smooth)

General characteristics

Name SteelNominal diameter

(mm)Thread Stress area

(mm²)Elastic limit(kN)

Ultimate strength

(kN)Diameter

(mm)Cross-section

(mm²)Mass(kg/m)

Maximum tensioning force

(kN)

Freys

sibar

+ 108

0 930/1080 55 M60 2,363 2,197 2,551 57 2,552 20.03 1,977930/1080 62 M68 3,056 2,841 3,300 65 3,318 26.05 2,557930/1080 72 M78 4,114 3,826 4,443 75 4,418 34.68 3,443930/1080 82* M88 5,329* 4,956* 5,755* 85 5,674 44.54 4,460*930/1080 92* M98 6,701* 6,232* 7,237* 95 7,088 55.63 5,609*930/1080 97* M103 7,447* 6,925* 8,042* 100 7,854 61.65 6,232*

* To be confirmed through testing

Couplers

EC plate** PTI plate*** Nut Washer Coupler

Name D (mm) L Tk L Tk SW H flat H sph D E flat E sph d I

Freys

sibar

+ 108

0 55 240 * 50 * 290 65 90 60 74 130 12 21 95 192.562 275 * 60 * 330 75 100 68 80 140 12 25 114 22072 315 * 70 * 385 90 114 78 92 160 14 29 127 25082 * 360 * 80 * 435 100 125 88 100 180 17 32 140 28092 * 405 * 90 * 490 115 140 98 112 200 18 35 168 31097 * 425 * 100 * 520 120 147 103 118 210 19 37 168 325

* Tobeconfirmedthroughtesting** PlatesaccordingtoEurocode.Thedimensionsmustbevalidatedthroughtesting*** PlatesvalidatedaccordingtoPTIguidelines

Tk

H flat

SW

L

D

L

E flat

Spherical washer

Spherical nut

Anchor plate

H sph

E sph

Bars

l

d

D

Tk L

L

SW