Job: Bridge Sungai Muda Job No.
: 148
Beam: TMbeam- 26m Calc. By: Aqila
Checked:
Data File: \\zar-storage\Eng\2. PROJECTS\31. Paya Keladi\TMBeam26mRev.sam 6/5/2025 2:25:09 PM
Design code: BS 5400-4:1990
Analysis: Erection stage stresses
Ultimate Limit State Load Combination 1
Prestress Classification: Class 1 - clause 4.1.1.1.
Section Ref 1 at 13m from left end of beam
Section details:
Ref 1 "Section 1"
at 0.5 x span = 13 m from left end of beam
Analysis:
Erection stage stresses
Ultimate Limit State
Load Combination 1
—————————————————————————————————————————————————————————————————
ULS Stress / Strain summary for section with HOGGING moment
—————————————————————————————————————————————————————————————————
height of neutral axis = 393.398 mm
at centroid of outermost 25% of tendon area:
height = 1040.0 mm
strain in PC concrete = -0.0153
initial strain in tendon = -0.0058
total strain in tendon = -0.0212
yield strain = -0.005 - fpu /Es .γm = -0.0131
Tendons are fully yielded, therefore the full ultimate capacity may be applied
to the section. (clause 6.3.3.1)
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Location strain stress height
N/mm² mm
————————————————————————————————————————————————————————————
Precast beam - top -0.016769 0.0 1120.0
- bottom 0.0035 26.8 0.0
In situ stage 1 - top -0.020389 0.0 1320.0
- bottom -0.016769 0.0 1120.0
Tendon - top -0.022149 -1617.4 1040.0
- bottom -0.003415 -682.98 60.0
Ultimate capacity of section = -474.373 kN.m
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SAM v6.60e
Copyright © 2025 Bestech Systems Ltd 6/5/2025 15:30 1
Job: Bridge Sungai Muda Job No.: 148
Beam: TMbeam- 26m Calc. By: Aqila
Checked:
Data File: \\zar-storage\Eng\2. PROJECTS\31. Paya Keladi\TMBeam26mRev.sam 6/5/2025 2:25:09 PM
Design code: BS 5400-4:1990
Analysis: Erection stage stresses
Ultimate Limit State Load Combination 1
Prestress Classification: Class 1 - clause 4.1.1.1.
Section Ref 1 at 13m from left end of beam
ULS Stress / Strain summary for section with SAGGING moment
—————————————————————————————————————————————————————————————————
height of neutral axis = 405.93 mm
at centroid of outermost 25% of tendon area:
height = 60.0 mm
strain in PC concrete = -0.0017
initial strain in tendon = -0.0058
total strain in tendon = -0.0075
yield strain = -0.005 - fpu /Es .γm = -0.0131
Tendons are not fully yielded, therefore the section must be adequate for 1.15
times the ultimate applied loads. (clause 6.3.3.1)
————————————————————————————————————————————————————————————
Location strain stress height
N/mm² mm
————————————————————————————————————————————————————————————
Precast beam - top 0.0035 26.8 1120.0
- bottom -0.00199 0.0 0.0
In situ stage 1 - top 0.0044803 28.6296 1320.0
- bottom 0.0035 17.8667 1120.0
Tendon - top -0.00372 -744.04 1040.0
- bottom -0.007525 -1345.5 60.0
Ultimate capacity of section = 5432.904/1.15
= 4724.264 kN.m
End
SAM v6.60e
Copyright © 2025 Bestech Systems Ltd 6/5/2025 15:30 2
