Friction Characteristics of Post-Tensioned Tendons of Full-Scale Structures Based on Site Tests

Table 1

Recommended friction coefficients.

Provisions	Provisions wobble friction coefficient (k)/m	Curvature friction coefficient (µ)/rad
ACI 318-08 [21]	0.0016–0.0066	0.15–0.25
ACI 318-14 [2]	Not specified but can refer to post-tensioning manual
AASHTO LRFD bridge design specifications [3]	0.00066	0.15–0.25
Bridge design manual [22]	0.00066	0.2
Post-tensioning manual [4]	0.0010–0.0023 with 0.0016 recommended	0.14–0.22 with 0.18 recommended
JTG 3362-2018 [1]	0.0015	0.20–0.25