8/10/2019 AWWA D100 Tension Table

1/1

WELDED CARBON STEEL TANKS FOR WATER STORAGE 21

Table 4 Material classes

Fy*

Class psi (MPa)

0 Fy< 27,000 (Fy< 186.2)

1 27,000 Fy34,000 (186.2 Fy234.4)

2 Fy> 34,000 (Fy> 234.4)

*Where Fyis the published minimum yield strength.

Table 5 Unit stressestension

Maximum Unit Stress

Item Class psi (MPa)

Plates in tank shell 1,2* 15,000 (103.4)

Structural steel, built-up structural members, structural details 0 12,000 (82.7)

1 15,000 (103.4)

2 18,000 (124.1)

Tension rings 1,2 15,000 (103.4)

Bolts and other nonupset threaded parts 15,000 (103.4)

Anchor bolts

Mild steel

ASTM A36 or ASTM F1554-36 15,000 (103.4)

ASTM F1554-55 (weldable) 18,750 (129.3)

High strength steel

ASTM A193-B7

11/4in. diameter 21/2in. 31,250 (215.5)

21/2in. < diameter 4 in. 28,750 (198.3)

ASTM F1554-105

11/4in. diameter 3 in. 31,250 (215.5)

Bracing rods with swedged (upset) or welded, enlarged stubends having threads with root area greater than the rod area

1 15,000 (103.4)

2 18,000 (124.1)Cast steel 11,250 (77.6)

*See exceptions in Sec. 4.5.

On area based on diameter at root of threads.

See Sec. 3.3.3.2 for additional requirements.

On area based on diameter at root of threads or an area of plain portion of rod, whichever is smaller.