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PROJECT : PAGE :
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 CLIENT :
DESIGN BY :
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JOB NO. : DATE :
REVIEW BY :
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Existing Concrete Beam Enhancement Based on 2015 IEBC, ASCE 41-17 & ACI 318-14
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DESIGN CRITERIA
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1. The new shotcrete strength can be either higher or lower than existing. The capacity of existing shear reinforcement ignored conservatively.
<== Tips:
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2. Before new shotcrete, to rough, clear and wet the existing surface is required.
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The NEW REINFORCEMENT can be replaced by steel plate with EXPOXY to existing, and input (T - thk plate) as COVER value.
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INPUT DATA & DESIGN SUMMARY
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EXISTING BEAM SECTION SIZE
bw =24
in, (610 mm).
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hf =6
in, (152 mm).
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b =60
in, (1524 mm), (ACI 318-14 6.3.2.1 & 9.2.4.4)
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h =30
in, (762 mm).
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EXISTING BEAM STRENGTH
old fc' =2,79
ksi, (19 MPa)
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old Fy =40
ksi, (276 MPa)
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NEW SHOTCRETE THICKNESS
T =7
in, (178 mm).
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NEW STEEL YIELD STRESS
Fy =60
ksi, (414 MPa)
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NEW SHOTCRETE STRENGTH
fc' =5
ksi, (34 MPa)
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THE MAX CONCRETE STRESS
b =0,85
fc' (0.85 on ACI, 1.0 on AISC)
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THE MAX CONCRETE STRAINS
emax =0,003
, (ASCE 41-17 10.3.3.1)
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The b, emax, C, fc' & Ec all coupled together, but ACI 318-14, ASCE 41-17, and AISC 341-16 have their different values, which may not be adequate, even on single code self.
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THE DESIGN IS ADEQUATE.
If purchaser got comments that our results different with other famous/big software, please directly email us the comments and the checker's contact information.
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SECTION FORCES
Vu =196
kips, (872 kN)
We do prompt response to save your time.
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(Strength Level, LRFD)
Pu =350
kips, (1557 kN)
<== For this Pu, the max fMn =
761,0
ft-kips, (1032 kN-m).
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Mu =300
ft-kips, (407 kN-m)
<== For this Mu, the max fPn =4156,1
kips, (18487 kN),
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( Pu / fPn =
0,084)
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OLD TOP REINFORCEMENT (zero for not sure)
3#8
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OLD BOTTOM REINFORCEMENT (zero for not sure)
4#8
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NEW BOTTOM REINFORCEMENT
5#7
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NEW SHEAR REINFORCEMENT
#4@8
in. (203 mm), o.c.
Cover =0,75
in, (19 mm)
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ANALYSIS
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CHECK FLEXURAL & AXIAL CAPACITY
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Pn
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Mn .
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Pu / f =538,5
kips, (2395 kN)
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Mnc @ Pu / f =
1170,8
ft-kips, (1587 kN-m)
Solid Line - Tension Controlled
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>Mu / f =461,5
ft-kips, (626 kN-m)
Dash Line - Compression Controlled
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[Satisfactory]
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wheref =0,650
, (TMS 402-16 9.1.4.1, ACI 318-14 21.2 & AISC 341-16 B3.2)
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CHECK SHEAR CAPACITY (ACI 318-14 10 & 22.5)
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Vu / f =261,3
kips, (1162 kN)
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Vc + Vs =
311,2
kips, (1384 kN)
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wheref =0,75
, (ACI 318-11 21.2)
[Satisfactory]
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Vc =205,8
kips, (915 kN)
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Vs =105,4
kips, (469 kN)
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LICENSE NUMBER: Package License Including New Software Based on ASCE 41-17, ASCE 7-16, AISC 360/341/358-16
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www.Engineering-International.com
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