Influence of the Force Arm on the Flexural Performance of Prestressed Glulam Beams

Table 1

Basic parameters for test components.

Group	Beam no.	Prestress value (N/mm^2)	Number of steel wires	End^1 (mm)	String^2 (mm)	Number of beams
A	SPF-1.1	99	2	10	90	3
	SPF-1.2^3	99	2	10	130	3
	SPF-1.3	99	2	10	170	3
B	SPF-1.2^4	99	2	10	130	3
	SPF-2.2	99	2	30	130	3
	SPF-3.2	99	2	50	130	3

¹Distance from the reinforcement at the end to the bottom of the glued laminated timber; ²distance from the reinforcement at the string to the bottom of the glued laminated timber; ^3,4test under the same condition with the same test data.