2,5” 2,5” 2,5”

ua=2,5”

ub =2,5”

1,0”1,0”

ub =2,5”ua=2,5”

1,0”

x=1,08

1,0”x=1,081,0”1,0”

ub =2,5”ua=2,5”

1,0”ub =2,5”ua=2,5”

1,0”

Theme of 3rd discussion : Design of The Tension member

1. Determine the nominal tension strength of the W section which connected by plates at its

two flanges, as shown below. There are three bolts along each connection line in the

direction of loading.

The W sections are:

Groups 1-4: W 14x82 in BJ37 steel with 3/4 in. diameter Bolts

Groups 5-8: W 14x74 in BJ37 steel with 5/8 in. diameter Bolts

Groups 9-12: W 14x68 in BJ34 steel with 7/8 in. diameter Bolts

Groups 9-12: W 14x61 in BJ34 steel with 1/2 in. diameter Bolts

2. Design a plate as tention member to support a total ultimit loading of:

Groups 1-4: 100 KN. Use BJ 41 steel.

Groups 5-8 : 70 KN. Use BJ 37 steel.

Groups 9-12 : 60 KN. Use BJ 34 steel.

Groups 13-14 : 80 KN. Use BJ 50 steel.

3. Hitunglah luas bersih yang menentukan dan kapasitas (ΦNn) dari sambungan untuk profil batang tarik seperti gambar di bawah ini! Profil batang tarik: L 6 x 4 x 3/4; Diameter baut: ½”

Profil batang tarik: Group 1- 4: L 6 x 6 x 3/4; Diameter baut: ½” , baja mutu BJ 41Group 4 -8: L 6 x 4 x 3/4; Diameter baut: ½” , baja mutu BJ 37Group 9 - 12: L 7 x 4 x 1/2; Diameter baut: 3/4” , baja mutu BJ 41Group 13- 14: L 8 x 4 x 3/4; Diameter baut: 3/4” , baja mutu BJ 37