Prestressed reinforcement is defined using the following parameters. It is also important to select the bar type to get the correct geometrical properties.

f_yk: Characteristic yield stress [MPa]

f_uk: Ultimate tensile strength [MPa]

E_sk: Ultimate tensile strength [MPa]

ε_ud: Elongation of reinforcement at maximum load [-]

ε_limit: Limit elongation [-]

γ_s: Partial factor for steel materials [-]

Bar type

For prestressed reinforcement of Wire and Single wire types, it is possible to set a reinforcement diameter of the following dimensions:

• 6.90 mm (Area: 29 mm²)
• 7.00 mm (Area: 30 mm²)
• 8.00 mm (Area: 38 mm²)
• 9.00 mm (Area: 50 mm²)
• 9.30 mm (Area: 52 mm²)
• 9.60 mm (Area: 55 mm²)
• 11.00 mm (Area: 70 mm²)
• 11.30 mm (Area: 75 mm²)
• 12.50 mm (Area: 93 mm²)
• 12.90 mm (Area: 100 mm²)
• 13.00 mm (Area: 102 mm²)
• 15.20 mm (Area: 139 mm²)
• 15.70 mm (Area: 150 mm²)

Bar type	Picture	Description	Also known as
Wire		Used for prestressing steel
Single Wire		Used for prestressing steel

Material name	no. of wires	Diameter [mm]	Tensile strength [MPa]	Cross sectional area [mm2]	Description	Source
SS3615LR					Prestressing strand 3615	SS 21 36 15
SS3620LR					Prestressing strand 3620	SS 21 36 20
Y1770S2	2	5.6	1770	9.7		SS 21 25 53:2013
		6.0	1770	15.1		SS 21 25 53:2013
Y1770S3	3	7.5	1770	29.0		SS 21 25 53:2013
Y1860S2	2	4.5	1860	7.95		SS 21 25 53:2013
Y1860S3	3	4.85	1860	11.9		SS 21 25 53:2013
		6.5	1860	21.2		SS 21 25 53:2013
		6.9	1860	23.4		SS 21 25 53:2013
		7.5	1860	29.0
		8.6	1860	37.4
Y1920S3	3	6.3	1920	19.8
		6.5	1920
Y1960S3	3	4.8	1960
		5.2	1960
		6.5	1960
		6.85	1960
Y2060S3	3	5.2	2060
Y2160S3	3	5.2	2160
Y1670S7	7
Y1700S7G	7
Y1770S7	7
Y1820S7G	7
Y1860S7	7
Y1860S7G	7
Y1960S7	7
Y2060S7	7
Y2160S7	7