Dr. N. Subramanian

Alternate Transverse ReinforcementIn Beams

Fig. 1 Types and arrangement of stirrups

Fig. 3 Performance of different types of webreinforcement (Source: Leonhardt 1964)

Fig. 2 Headed shear stud reinforcement conforming to ASTM A1044/A1044M (Source: ACI 421.1 R-08. Reprinted

with permission from the American Concrete Institute).

Fig. 4 Types of vertical stirrups

Fig. 5 Flow of forces in beams with stirrups (Leonhardt and Walther 1964)

Fig. 6 Vertical stirrups- Note the two different alternate arrangements of providing inner stirrups

Fig. 7 Performance of bent-up bars in shear (Source: Leonhardt and Mönnig 1977)

Fig. 8 Spirals (Source: Jaafar, 2007)

Table1 Details of Shearail® system

Stud dia, mm

10 12 14 16 20

Head dia, mm

30

36

42 48 60

Twin rail width

2x16 mm

2x16 mm

2x16 mm

2x16 mm

3x16 mm

Stud lengths available in increments of 10 mm; rail thickness 3mm; overhangs of twin rails are kept as same at both ends to eliminate site fixing errors

Fig. 9 Headed stud with deformed stem and heads at both ends

(1a)ckn f6.0=t

(1b)ckn f6.0=t

(2a)ckn f45.0=t

ckc flt15.0= (2b)

Fig. 10 Conventional single-leg stirrup and headed stud