6,200 tons SAS 670 high strength rein­force­ment bars, Ø 43 mm to 75 mm with pla­tes, lock nuts and cou­plers, 450 tons SAS 835/1035 post-ten­sio­ning bars, Ø 75 mm as DCP-rock an­chors with an­chor heads and cou­pling sys­tems.

The twin towers of the ori­gi­nal world tra­de cen­ter we­re de­s­troy­ed on the Sep­tem­ber 11 2001. On the sa­me site a me­mo­ri­al and four new towers (1 WTC to 4 WTC) we­re built. The mas­ter plan ar­chi­tect for the re­buil­ding was Da­ni­el Li­bes­kind. One world tra­de cen­ter (for­mer Free­dom Tower) will reach ap­prox.. 540m and will be the hig­hest buil­ding of New York when it’s fi­nis­hed. SAS steel was used for foun­da­ti­on work (DCP-an­chors and cais­son-pi­les) and for the su­per­struc­tu­re (co­lumns and she­ar walls) of the new towers. Com­mon rein­force­ment was re­pla­ced by SAS 670 for cost re­duc­tion re­a­sons. Rein­force­ment ca­ges we­re used to im­pro­ve the work­flow for rein­forced con­cre­te co­lumns. The rein­force­ment for the com­po­si­te co­lumns was as­sem­bled bar by bar. The ea­sy, fast and hence eco­no­mic as­sem­bling of high strength thre­ad bars sa­tis­fied the rein­force­ment and con­struc­tion com­pa­ny as well as the ow­ner of the buil­ding.

SPORT CI­TY TOWER, Do­ha, Qa­tar

Sport Ci­ty Tower in Do­ha, Qa­tar. The ex­ter­nal fa­ca­de of the 320 m high sky scra­per is a com­bi­na­ti­on of ar­chi­tec­tu­ral stain­less steel and gla­zing pa­nels. Its struc­tu­re com­bi­nes rein­forced con­cre­te and struc­tu­ral steel, with de­ep pi­les and a slip-for­med con­cre­te co­re.

44 SAS 835/1035 thre­ad bars

At the ele­va­ti­on of 260 m above ground le­vel, this post-ten­sio­ning sys­tem is re­qui­red for the three-di­men­sio­nal ali­gn­ment of the 60 m high can­ti­le­ver steel con­struc­tion in form of a half-open tu­lip. In­si­de this con­struc­tion a 30 m high go­blet is pla­ced, in which the Olym­pic fla­me bur­ned du­ring the Asi­an Ga­mes 2006.

The old weir at the ri­ver Cou­es­non is re­pla­ced by a new spe­cial weir, in or­der to avo­id the sand sil­ting of the bay. The prin­ciple is sim­ple: at the ebb-ti­de the weir is opened, the dam­med up wa­ter shoots in­to the bay and flus­hes the al­lu­vi­al de­po­sits with it.

Scope of sup­p­ly:

5 4 pcs. SAS 835/1035 thre­ad bars Ø75 mm, l = 4,15 m and 54 pcs. SAS 835/1035 thre­ad bars Ø 75 mm, l = 4,48 m with ac­cess­ories. The ul­ti­ma­te load of each thre­ad bar is 4,572 kN.

Ap­p­li­ca­ti­on:

Du­ring flood-ti­de the weir is clo­sed and the ri­ver Cou­es­non is dam­med up. The pres­su­re force of the dam­med up wa­ter is held by the new spe­cial weir. The­re­fo­re the wa­ter­ga­tes of the weir are pre-stres­sed to the con­cre­te py­lons with two groups of ground an­chors of SAS 835/1035

Ø 75 mm ten­dons. The thre­ad bars are pre-stres­sed to a working load of 2,250 kN.

Gate­way up­grade pro­ject in Bris­bane, Aus­tra­lia

Scope of sup­p­ly:

150 tons SAS 835/1035 thre­ad bars of Ø 75 mm for the bridge pi­le foun­da­ti­on sys­tem. Me­cha­ni­cal spli­ces of the SAS thre­ad bars with SAS cou­plers al­low a full load trans­fer.

Ap­p­li­ca­ti­on:

The new Gate­way Bridge is sup­por­ted by rein­forced con­cre­te co­lumns with an ou­ter di­men­si­on of 15.0 m length and 2.5 m width. The loads of the rein­forced con­cre­te co­lumns are trans­fer­red to the rein­forced con­cre­te pi­le caps, which ha­ve an area of 19.5 m length, 17.6 m width and a thick­ness of 3.2 m and from the­re to the foun­da­ti­on pi­les with Øof 1.8 m. The pi­le heads are rein­forced with SAS 835/1035 thre­ad bars to pro­vi­de ver­ti­cal and ho­ri­zon­tal post ten­sio­ning in the main pier heads.

Pro­ject:

OPE­RA TOWER, FRANK­FURT, 
Ger­ma­ny

Cli­ent:

Opern­platz Pro­per­ty Hol­dings GmbH & Co. KG

Con­struc­tion pe­ri­od:

Ja­nu­a­ry 2007 - De­cem­ber 2009

Main contrac­tor:

Ed. Züb­lin AG

Ow­ner:

Tish­man Spey­er

Scope of sup­p­ly:

SAS thre­ad bars of steel gra­de 670/800 and con­tact cou­plers,

Ø 30 - 75 mm, with a to­tal amount of 320 to SAS thre­ad bars and 3,700 pcs. con­tact cou­plers.

Ap­p­li­ca­ti­on:

The high-strength SAS thre­ad bars 670/800 and con­tact cou­plers are used for rein­for­cing the co­lumns of a high-ri­se buil­ding (to­tal height of the buil­ding ~170 m) in Ger­ma­ny for the first ti­me. The to­tal lon­gi­tu­di­nal rein­force­ment of the high load ca­pa­ci­ty and edge co­lumns is de­si­gned with the high-strength SAS thre­ad bars 670/800. The ra­tio of rein­force­ment is up to 13 %. This high ra­tio of rein­force­ment at no con­ges­ti­on of steel in the co­lumns is pos­si­ble due to the rebar

Ø of up to 75 mm. Me­cha­ni­cal spli­ces of SAS thre­ad bars by con­tact cou­plers al­low the trans­fer­ring of high com­pres­si­ve forces.

LC CORP S.A., Po­len.

De­cem­ber 2007 - No­vem­ber 2012

500 tons SAS 500 thre­ad bars, Ø 16, 20 and 25 mm and 40 000 ac­cess­ories for cou­pler and end an­cho­r­a­ge.

SAS 500 thre­ad bars we­re used in this buil­ding as rein­force­ment steel in she­ar walls and co­lumns as part of the she­ar co­re. Due to high wind loads on tall struc­tu­res she­ar walls con­tain con­cen­tra­ti­on of rein­for­cing steel ma­de pos­si­ble by using cou­plers spli­ces.

49 tons SAS 835/1035 pre-stres­sing bars Ø 65 mm, length 16 m, 160 pcs. an­chor pla­tes co­ne, 30°, 195 pcs. bull no­se nuts, 30°, 160 pcs. cou­plers, stan­dard stres­sing cou­plers and stres­sing an­cho­ra­ges

Due to the high dy­na­mic loads of the Ca­pi­tal Gate Tower, the bas­e­ment le­vel co­re walls of the buil­ding are rein­forced and pre-stres­sed with SAS stress bars 835/1035. In or­der to re­du­ce the re­qui­red quan­ti­ty of bars, the con­ven­tio­nal reb­ars are suc­cess­ful­ly re­pla­ced by the high-strength SAS stress bars. With 35 floors and a to­tal area of 50,000 m², the Ca­pi­tal Gate Tower is used as of­fices and as ho­tel.

850 pcs. SAS 950/1050 post-ten­sio­ning bars Ø 36 mm, length 3.00 m, un­bond­ed ten­don with an­chor pla­tes and do­me nuts at both ends of the bars

The new Soc­cer Ci­ty Sta­di­um in Jo­han­nes­burg, for the foot­ball world cup in South Af­ri­ca, has a sea­ting ca­pa­ci­ty for 94,000 fans. The SAS post-ten­sio­ning bars 950/1050 are used for the ver­ti­cal an­cho­ring of the roof struc­tu­re to the con­cre­te co­lumns. The to­tal area of the roof struc­tu­re is 370,000 m². The an­cho­r­a­ge of the SAS 950/1050 bars is rea­li­zed with an­chor pla­tes and do­me nuts cast in­to the con­cre­te co­lumns. Due to the ea­sy, fast and safe hand­ling of the SAS thre­ad bar sys­tem an ef­fi­ci­ent con­struc­tion ti­me is gua­ran­te­ed.

Slab track sys­tem Bögl, ICE high speed rail­way li­ne Nürn­berg-In­gol­stadt & Er­furt-Ill­men­au

1865 tons thre­ad bars SAS 500 Ø 20 mm with fix lenght of 6,44 m

Thre­ad bars SAS 500 are used for cou­pling the pre­fa­bri­ca­ted com­po­n­ents of fi­xed track­way sys­tem, ma­nu­fac­tu­red on the pro­duc­tion sites of the pre­cas­ting plants of Max Bögl. Each pre cast sl­abs con­sist of six bars. The fi­xed track­way ele­ments with a no­mi­nal length of 6,50 m was con­nec­ted and stres­sed via ex­po­sed ends of thre­ad bars to­ge­ther with turn­buck­les and do­me nuts. In fact of force-lo­cked con­nec­tion bet­ween the pre cast sl­abs with thre­ad bars dy­na­mic loads cau­sed by high-speed trains can be ab­sor­bed safe­ly.