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SUMMARY OF STRUCTURAL CALCULATION OF 1-BARREL BOX CULVER
1 Design Dimensions and Bar Arrangements Class III Road (BM50)
Type of box culvert B2.0 x H2.5
Clear width m 2.00Clear height m 2.50
Height of fillet m 0.20
Thickness Side wall cm 20.0
Top slab cm 20.0Bottom slab cm 20.0
Cover of reinforcement bar(between concrete surface and center of reinforcement bar)Side wall Outside cm 6.0
Inside cm 6.0Top slab Upper cm 6.0
Lower cm 6.0
Bottom slab Lower cm 6.0Upper cm 6.0
Bar arrangement (dia - spacing per unit length of 1.0 m)
Side wall Lower outside Tensile bar mm 16@250Distribution bar mm 12@250
Middle inside Tensile bar mm 12@250Distribution bar mm 12@250
Upper outside Tensile bar mm 16@250
Distribution bar mm 12@250
Top slab Upper edge Tensile bar mm 16@250
Distribution bar mm 12@250Lower middle Tensile bar mm 16@250
Distribution bar mm 12@250
Bottom sla Lower edge Tensile bar mm 16@250Distribution bar mm 12@250
Upper middle Tensile bar mm 12@125Distribution bar mm 12@250
Fillet Upper edge Fillet bar mm 12@250Lower edge Fillet bar mm 12@250
2 Design Parameters
Unit Weight Reinforced Concrete gc= 2.4 tf/m3
Backfill soil (wet) gs= 1.8 tf/m
(submerged) gs'= 1.0 tf/m3
Live Load Class of road Class III (BM50)
Truck load at rear wheel P= 5.0 tf Impact coefficien (for Class I to IV roa Ci= 0.3 (D4.0m)
Pedestrian load (for Class V roads) 0 tf/m2
Concrete Design Strength sck= 175 kgf/cm2
(K175) Allowable Compressive Stress sca= 60 kgf/cm2
Allowable Shearing Stress ta= 5.5 kgf/cm2
Reinforcement Bar Allowable Tensile Stress ssa= 1,400 kgf/cm2
(U24, deformed bar) Yielding Point of Reinforcement Bar ssy= 3,000 kgf/cm2
Young's Modulus Ratio n= 24
Coefficient of static earth pressure Ka= 0.5
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STRUCTURAL CALCULATION OF BOX CULVERT Type: B2.00m x H2.50m C
Soil Cover Depth: 1.0 m
1 Dimensions and ParametersBasic Parameters
Ka: Coefficient of static earth pressure 0.5gw: Unit weight of water (t/m3) 1.00 t/m
gd: Unit weight of soil (dry) (t/m3) 1.80 t/mgs: Unit weight of soil (saturated) (t/m3) 2.00 t/mgc: Unit weight of reinforced concrete (t/m3) 2.40 t/msck: Concrete Design Strength 175 kgsca Allowable Stress of Concrete 60 kgssa: Allowable Stress of Reinforcement Bar 1400 kgta: Allowable Stress of Shearing (Concrete) 5.5 kgssy: Yielding Point of Reinforcement Bar 3000 kgn: Young's Modulus Ratio 24Fa: Safety factor against uplift 1.2
Basic Dimensions
H: Internal Height of Box Culvert 2.50 mB: Internal Width of Box Culvert 2.00 mHf: Fillet Height 0.20 mt1: Thickness of Side Wall 0.20 mt2: Thickness of Top Slab 0.20 m
t3: Thickness of Invert (Bottom Slab) 0.20 mBT: Gross Width of Box Culvert 2.40 mHT: Gross Height of Box Culvert 2.90 mD: Covering Depth 1.00 mGwd: Underground Water Depth for Case 1, 2 1.00 mhiw: Internal Water Depth for Case 1, 2 0.00 m
for Case 3, 4 2.50 m
Cover of R-bar Basic ConditionsTop Slab d2 0.06 m Classification of Live load by truck Class 3Side Wall d1 0.06 m PTM: Truck load of Middle Tire 5.00 tBottom Slab d3 0.06 m Ii: Impact coefficient (D 4.0m:0, D
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Load distribution of truck tire
(1) Middle tire's acting point: center of the top slaba) distributed load of middle tire
Pvtm: distributed load of middle tire 2PTM(1+Ii)(2B0-bm')/(am'B0^2) = 1.5444 tf/m2,am': length of distributed load 2D+1.75+bm = 4.000 mbm': width of distributed load 2D+am = 2.100 m
b) distributed load of rear tirePvtr: distributed load of rear tire not reach to top slab 0.0000 tf/m2,ar': length of distributed load 2D+1.75+br = 4.000 mbr': width of distributed load 2D+ar = 2.100 m
c) distributed load of front tirePvtf: distributed load of front tire not reach to top slab 0.0000 tf/m2,af': length of distributed load 2D+1.75+bf = 4.000 mbf': width of distributed load 2D+af = 2.100 m
(2) Middle tire's acting point: on the side walla) distributed load of middle tire
Pvtm: distributed load of middle tire 2PTM(1+Ii)/(am'bm') = 1.5476 tf/m2,
am': length of distributed load 2D+1.75+bm = 4.000 mbm': width of distributed load 2D+am = 2.100 m
b) distributed load of rear tirePvtr: distributed load of rear tire not reach to top slab 0.0000 tf/m2,ar': length of distributed load 2D+1.75+br = 4.000 mbr': width of distributed load 2D+ar = 2.100 m
c) distributed load of front tirePvtf: distributed load of front tire not reach to top slab 0.0000 tf/m2,af': length of distributed load 2D+1.75+bf = 4.000 mbf': width of distributed load 2D+af = 2.100 m
(3) Rear tire's acting point: on the side walla) distributed load of rear tire
Pvtr: distributed load of rear tire 2PTR(1+Ii)/(ar'br') = 1.5476 tf/m2,ar': length of distributed load 2D+1.75+br = 4.000 mbr': width of distributed load 2D+ar = 2.100 m
b) distributed load of middle tirePvtm: distributed load of middle tire not reach to top slab 0.0000 tf/m2,am': length of distributed load 2D+1.75+bm = 4.000 mbm': width of distributed load 2D+am = 2.100 m
c) distributed load of front tire
Pvtf: distributed load of front tire not reach to top slab 0.0000 tf/m2,af': length of distributed load 2D+1.75+bf = 4.000 mbf': width of distributed load 2D+af = 2.100 m
(4) Combination of load distribution of track tire
Case.L1: Pvt1 = 1.5444 tf/m2, B = 2.200 m Combination for Case.L2 (2)Pvt2 = 0.0000 tf/m2, B = 0.000 m a) + b)
Case.L2: Pvt1 = 1.5476 tf/m2, B = 2.200 m Distributed load total 1.5476Pvt2 = 0.0000 tf/m2, B = 0.000 m Select the combination case of
for Case.L2, which is the largest load to
In case of covering depth (D) is over 3.0m, uniform load of 1.0 tf/m2 is applied on the top slab of culvert instead of live load calc
Distribution load by pedestrian load
Pvt1 = 0.000 tf/m2
2 Stability Analysis Against Uplift
Analysis is made considering empty inside of box culvert.Fs=Vd/U > Fa Fs= 1.3241 > 1.2 ok
where, Vd: Total dead weight (t/m) Vd= 9.216 tf/mU: Total uplift (t.m)
U=BT*HT*gw U= 6.960 tf/m
Ws: Weight of covering soil Ws = BT*{(D-Gwd)*(gs-gw)+Gwd*gd} = 4.320 tf/mWc: Self weight of box culvert Wc = (HT*BT-H*B+2*Hf^2)*gc = 4.896 tf/mFa: Safety factor against uplift Fa= 1.2
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3 Load calculation
Case 1: Box Culvert Inside is Empty, Underground Water up to Top slab, Track load Case. L1
1) vertical load against top slab
Acting Load (tf/m2)Wtop= (t2*BT+Hf^2)*gc/B0 Wtop= 0.5673Pvd=Gwd*gd+(D-Gwd)*gs Pvd= 1.8000Pvt1 Pvt1= 1.5444Pvt2 Pvt2= 0.0000
Pv1= 3.9117
2) horizontal load at top of side wall
Acting Load (tf/m2) Horizontal pressure by track tireP1=Ka*we1 P1= 0.0000 we1= 0.0000 tf/m2P2=Ka*we2 P2= 0.0000 we2= 0.0000 tf/m2P3=Ka*gd*Gwd P3= 0.9000P4=Ka*gs*(D1-Gwd) P4= 0.1000P5=gw*(D1-Gwd) P5= 0.1000
Ph1= 1.1000
3) horizontal load at bottom of side wallActing Load (tf/m2)
P1=Ka*we1 P1= 0.0000P2=Ka*we2 P2= 0.0000P3=Ka*gd*Gwd P3= 0.9000P4=Ka*gs*(D1+H0-Gwd) P4= 2.8000P5=gw*(D1+H0-Gwd) P5= 2.8000
Ph2= 6.5000
4) self weight of side wall
Acting Load (tf/m)Wsw=t1*H*gc Wsw= 1.2000
5) ground reactionActing Load (tf/m2)Wbot=(t3*BT+Hf^2)*gc/B0 Wbot= 0.5673Wtop Wtop= 0.5673Ws=Wsw*2/B0 Ws= 1.0909
Pvd Pvd= 1.8000Pvt1 Pvt1= 1.5444Pvt2 Pvt2= 0.0000Wiw=(hiw*B-2Hf^2)*gw/B0 Wiw= 0.0000 hiw: internal water dUp=-U/B0 U= -3.1636
Q= 2.4062
summary of resistance moment
Item V H x y M(tf/m) (tf/m) (m) (m) (tf.m/m) acting point of result
Self weight top slab 1.2480 - 1.1000 - 1.3728 X = SM/SV =side wall (left) 1.2000 - 0.0000 - 0.0000 e = B0/2 - X =side wall (right) 1.2000 - 2.2000 - 2.6400invert 1.2480 - 1.1000 - 1.3728 ground reaction
load on top slab Pvd 3.9600 - 1.1000 - 4.3560 q1 = SV/Bo + 6SVePvt1 3.3977 - 1.1000 - 3.7375 q2 = SV/Bo - 6SVe
Pvt2 0.0000 - 1.1000 - 0.0000soil pressure side wall (left) - 10.2600 - 1.0303 10.5705
side wall (right) - -10.2600 - 1.0303 -10.5705internal water 0.0000 - 1.1000 - 0.0000uplift -6.9600 - 1.1000 - -7.6560total 5.2937 5.8231
6) load against invert
Acting Load (tf/m2)Pvd 1.8000Pvt1 1.5444Pvt2 0.0000Wtop 0.5673Ws 1.0909
Pq= 5.0026
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Case 2: Box Culvert Inside is Empty, Underground Water up to Top slab, Track load Case. L2
1) vertical load against top slab
Acting Load (tf/m2)Wtop= (t2*BT+Hf^2)*gc/B0 Wtop= 0.5673Pvd=Gwd*gd+(D-Gwd)*gs Pvd= 1.8000Pvt1 Pvt1= 1.5476
Pvt2 Pvt2= 0.0000Pv1= 3.9149
2) horizontal load at top of side wall
Acting Load (tf/m2) Horizontal pressure by track tireP1=Ka*we1 P1= 0.7738 we1= 1.5476 tf/m2P2=Ka*we2 P2= 0.0000 we2= 0.0000 tf/m2P3=Ka*gd*Gwd P3= 0.9000P4=Ka*gs*(D1-Gwd) P4= 0.1000P5=gw*(D1-Gwd) P5= 0.1000
Ph1= 1.8738
3) horizontal load at bottom of side wall
Acting Load (tf/m2)P1=Ka*we1 P1= 0.7738P2=Ka*we2 P2= 0.0000P3=Ka*gd*Gwd P3= 0.9000P4=Ka*gs*(D1+H0-Gwd) P4= 2.8000P5=gw*(D1+H0-Gwd) P5= 2.8000
Ph2= 7.2738
4) self weight of side wall
Acting Load (tf/m)Wsw=t1*H*gc Wsw= 1.2000
5) ground reactionActing Load (tf/m2)Wbot=(t3*BT+Hf^2)*gc/B0 Wbot= 0.5673Wtop Wtop= 0.5673Ws=Wsw*2/B0 Ws= 1.0909Pvd Pvd= 1.8000Pvt1 Pvt1= 1.5476
Pvt2 Pvt2= 0.0000Wiw=(hiw*B-2Hf^2)*gw/B0 Wiw= 0.0000 hiw: internal waterUp=-U/B0 U= -3.1636
Q= 2.4094
summary of resistance moment
Item V H x y M(tf/m) (tf/m) (m) (m) (tf.m/m) acting point of resu
Self weight top slab 1.2480 - 1.1000 - 1.3728 X = SM/SV =
side wall (left) 1.2000 - 0.0000 - 0.0000 e = B0/2 - X =side wall (right) 1.2000 - 2.2000 - 2.6400invert 1.2480 - 1.1000 - 1.3728 ground reaction
load on top slab Pvd 3.9600 - 1.1000 - 4.3560 q1 = SV/Bo + 6SV
Pvt1 3.4048 - 1.1000 - 3.7452 q2 = SV/Bo - 6SVe
Pvt2 0.0000 - 1.1000 - 0.0000soil pressure side wall (left) - 12.3493 - 1.0844 13.3910
side wall (right) - -12.3493 - 1.0844 -13.3910
internal water 0.0000 - 1.1000 - 0.0000uplift -6.9600 - 1.1000 - -7.6560total 5.3008 5.8308
6) load against invert
Acting Load (tf/m2)Pvd 1.8000Pvt1 1.5476Pvt2 0.0000Wtop 0.5673Ws 1.0909total Pq= 5.0058
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Case 3: Box Culvert Inside is Full, Underground Water up to invert, Track load Case. L1
1) vertical load against top slab
Acting Load (tf/m2)Wtop= (t2*BT+Hf^2)*gc/B0 Wtop= 0.5673Pvd=D*gd Pvd= 1.8000Pvt1 Pvt1= 1.5444
Pvt2 Pvt2= 0.0000Pv1= 3.9117
2) horizontal load at top of side wall
Acting Load (tf/m2) Horizontal pressure by track tireP1=Ka*we1 P1= 0.0000 we1= 0.0000 tf/m2P2=Ka*we2 P2= 0.0000 we2= 0.0000 tf/m2P3=Ka*gd*D1 P3= 0.9900WP=-gw*0 P4= 0.0000
Ph1= 0.9900
3) horizontal load at bottom of side wall
Acting Load (tf/m2)P1=Ka*we1 P1= 0.0000P2=Ka*we2 P2= 0.0000P3=Ka*gd*(D1+H0) P3= 3.4200WP=-gw*H P4= -2.5000
Ph2= 0.9200
4) self weight of side wall
Acting Load (tf/m)Wsw=t1*H*gc Wsw= 1.2000
5) ground reaction
Acting Load (tf/m2)Wbot=(t3*BT+Hf^2)*gc/B0 Wbot= 0.5673Wtop Wtop= 0.5673Ws=Wsw*2/B0 Ws= 1.0909Pvd Pvd= 1.8000Pvt1 Pvt1= 1.5444Pvt2 Pvt2= 0.0000Wiw=(hiw*B-2Hf^2)*gw/B0 Wiw= 2.2364 hiw: internal water
Up=0 U= 0.0000Q= 7.8062
summary of resistance moment
Item V H x y M(tf/m) (tf/m) (m) (m) (tf.m/m) acting point of resu
Self weight top slab 1.2480 - 1.1000 - 1.3728 X = SM/SV =
side wall (left) 1.2000 - 0.0000 - 0.0000 e = B0/2 - X =side wall (right) 1.2000 - 2.2000 - 2.6400invert 1.2480 - 1.1000 - 1.3728 ground reaction
load on top slab Pvd 3.9600 - 1.1000 - 4.3560 q1 = SV/Bo + 6SV
Pvt1 3.3977 - 1.1000 - 3.7375 q2 = SV/Bo - 6SVe
Pvt2 0.0000 - 1.1000 - 0.0000soil pressure side wall (left) - 2.5785 - 1.3665 3.5235
side wall (right) - -2.5785 - 1.3665 -3.5235internal water 4.9200 - 1.1000 - 5.4120uplift 0.0000 - 1.1000 - 0.0000
total 17.1737 18.8911
6) load against invert
Acting Load (tf/m2)Pvd 1.8000Pvt1 1.5444Pvt2 0.0000Wtop 0.5673Ws 1.0909total Pq= 5.0026
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Case 4: Box Culvert Inside is Full, Underground Water up to invert, Track load Case. L2
1) vertical load against top slab
Acting Load (tf/m2)Wtop= (t2*BT+Hf 2)*gc/B0 Wtop= 0.5673Pvd=D*gd Pvd= 1.8000
Pvt1 Pvt1= 1.5476
Pvt2 Pvt2= 0.0000Pv1= 3.9149
2) horizontal load at top of side wall
Acting Load (tf/m2) Horizontal pressure by track tireP1=Ka*we1 P1= 0.7738 we1= 1.5476 tf/m2
P2=Ka*we2 P2= 0.0000 we2= 0.0000 tf/m2P3=Ka*gd*D1 P3= 0.9900WP=-gw*0 P4= 0.0000
Ph1= 1.7638
3) horizontal load at bottom of side wall
Acting Load (tf/m2)P1=Ka*we1 P1= 0.7738P2=Ka*we2 P2= 0.0000P3=Ka*gd*(D1+H0) P3= 3.4200WP=-gw*H P4= -2.5000
Ph2= 1.6938
4) self weight of side wall
Acting Load (tf/m)Wsw=t1*H*gc Wsw= 1.2000
5) ground reaction
Acting Load (tf/m2)Wbot=(t3*BT+Hf^2)*gc/B0 Wbot= 0.5673
Wtop Wtop= 0.5673Ws=Wsw*2/B0 Ws= 1.0909Pvd Pvd= 1.8000
Pvt1 Pvt1= 1.5476Pvt2 Pvt2= 0.0000Wiw=(hiw*B-2Hf^2)*gw/B0 Wiw= 2.2364 hiw: internal water d
Up=0 U= 0.0000Q= 7.8094
summary of resistance moment
Item V H x y M
(tf/m) (tf/m) (m) (m) (tf.m/m) acting point of resultSelf weight top slab 1.2480 - 1.1000 - 1.3728 X = SM/SV =
side wall (left) 1.2000 - 0.0000 - 0.0000 e = B0/2 - X =side wall (right) 1.2000 - 2.2000 - 2.6400invert 1.2480 - 1.1000 - 1.3728 ground reaction
load on top slab Pvd 3.9600 - 1.1000 - 4.3560 q1 = SV/Bo + 6SVe
Pvt1 3.4048 - 1.1000 - 3.7452 q2 = SV/Bo - 6SVe/
Pvt2 0.0000 - 1.1000 - 0.0000soil pressure side wall (left) - 4.6678 - 1.3591 6.3440
side wall (right) - -4.6678 - 1.3591 -6.3440internal water 4.9200 - 1.1000 - 5.4120
uplift 0.0000 - 1.1000 - 0.0000
total 17.1808 18.8988
6) load against invert
Acting Load (tf/m2)
Pvd 1.8000Pvt1 1.5476
Pvt2 0.0000Wtop 0.5673
Ws 1.0909total Pq= 5.0058
Summary of Load Calculation
Item Pv1 Ph1 Ph2 Pq Wsw q1Case (tf/m2) (tf/m2) (tf/m2) (tf/m2) (tf/m) (tf/m2)
Case.1 3.9117 1.1000 6.5000 5.0026 1.2000 2.4062
Case.2 3.9149 1.8738 7.2738 5.0058 1.2000 2.4094
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4 Analysis of Plane Frame
Case 1: Box Culvert Inside is Empty, Underground Water up to Top slab, Track load Case. L1
1) Calculation of Load Term
Ph1 Horizontal Pressure at top of side wall 1.100 tf/m2
Ph2 Horizontal Pressure at bottom of side wall 6.500 tf/m2
Pv1 Vertical Pressure(1) on top slab 3.912 tf/m2
Pv2 Vertical Pressure(2) on top slab 0.000 tf/m2
Pq Reaction to bottom slab 5.003 tf/m2
a Distance from joint B to far end of Pv2 2.200 mb Distance from joint B to near end of Pv2 0.000 mH0 Height of plane frame 2.700 mB0 Width of plane frame 2.200 mt1 Thickness of side wall 0.200 mt2 Thickness of top slab 0.200 mt3 Thickness of invert (bottom slab) 0.200 m
CAB = CDC = (2Ph1+3Ph2)H0
2
/60= 2.63655 tf m
CBA = CCD = (3Ph1+2Ph2)H02/60 = 1.98045 tf m
CBC = CCB = Pv1B02/12 + {(a
2-b
2)B0
2/2 - 2B0(a
3-b
3)/3 + (a
4-b
4)/4}Pv2/B0
2 = 1.57772 tf m
CDA = CAD = PqB02/12 = 2.01772 tf m
2) Calculation of Bending Moment at joint
k1 = 1.0
k2 = H0t23/(B0t1
3) = 1.2273
k3 = H0t33/(B0t1
3) = 1.2273
2(k1+k3) k1 0 k3 -3k1 qA CAB - CAD
k1 2(k1+k2)k2
0 -3k1 qB CBC - CBA0 k2 2(k1+k2) k1 -3k1 qC = CCD - CCB
k3 0 k1 2(k1+k3) -3k1 qD CDA - CDC
k1 k1 k1 k1 -4k1 R 0
As load has bilateral symmetry, the equation shown below is formed.
qA = -qD qB = -qC R =0
2k1+k3 k1 qA
k1 2k1+k2 qB
3.2273 1.0 qA
1.0 3.2273 qB
By solving above equation, the result is led as shown below.
qA = 0.25489 qC = 0.20377
qB = -0.20377 qD = -0.25489
=CAB - CAD
CBC - CBA
=
0.61883333
-0.40273333
B
A
(t2)
(t1)
B0
(t3)
(t1)
C
H0
D
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MAB = k1(2qA +qB) - CAB = -2.3305 tfm
MBA = k1(2qB+qA)+CBA = 1.8278 tfm
MBC = k2(2qB+qC) - CBC = -1.8278 tfm
MCB = k2(2qC+qB)+CCB = 1.8278 tfm
MCD = k1(2qC+qD) - CCD = -1.8278 tfm
MDC =k1 (2qD+ qC)+CDC = 2.3305 tf m
MDA = k3(2qD+qA) - CDA = -2.3305 tfm
MAD = k3(2qA+qD)+CAD = 2.3305 tfm
2) Calculation of Design Force
2-1) Side Wall in left
a) Shearing Force at joint
w1 Load at end A 6.500 tf/m2
w2 Load at end B 1.100 tf/m2
MAB Bending moment at end A -2.3305 tfm
MBA Bending moment at end B 1.8278 tfm
L Length of member (=H0) 2.700 mch Protective covering height 0.060 mt Thickness of member (height) 0.200 md Effective height of member 0.140 m
SAB = (2w1+w2)L/6 - (MAB+MBA)/L
= 6.531 tf
SBA = SAB - L(w1+w2)/2 = -3.729 tf
b) Shearing Force at 2d point from jointShearing force at the point with a distance of 2d from joint is calculated by following equation.
Sx = SAB - w1x - (w2 - w1)x2/(2L)
(i) In case of x1 = 0.280 m
Sx1 = 4.790 tf (ii) In case of x2 = 2.420 m
Sx2 = -3.342 tf
c) Bending Moment
MA = MAB = -2.331 tfm
MB = -MBA = -1.828 tfm
The maximum bending moment occurs at the point of that shearing force equal to zero.
Sx = 0 = SAB - w1x - (w2 - w1)x2/(2L)
= 6.5312 -6.5000 x + 1.0000 x2 , x = 5.258
1.242Bending moment at x 1.2422 m is;
Mmax = SABx - w1x2/2 - (w2-w1)x
3/(6L) + MAB = 1.407 tfm
w1
w2
A
B
Lx
MAB
MBA
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2-2) Top Slaba) Shearing Force at joint
w1 Uniform load 3.912 tf/m2
w2 Uniform load 0.000 tf/m2
a Distance from end B to near end of 0.000 m
b Length of uniform load w2 2.200 mMBC Bending moment at end B -1.8278 tf m
MCB Bending moment at end C 1.8278 tf m
L Length of member (=Bo) 2.200 mch Protective covering height 0.060 mt Thickness of member (height) 0.200 md Effective height of member 0.140 m
SBC = (w1L+w2b)/2-(MBC+MCB)/L = 4.303 tf
SCB = SBC -w1L - w2b = -4.303 tf
b) Shearing Force at 2d point from jointShearing force at the point with a distance of 2d from joint is calculated by following equation.
Sx = SBC - w1x - w2(x-a) in case of 0.000 m
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b) Shearing Force at 2d point from jointShearing force at the point with a distance of 2d from joint is calculated by following equation.
Sx = SCD - w1x - (w2 - w1)x2/(2L)
(i) In case of x1 = 0.280 mSx1 = 3.342 tf
(ii) In case of x2 = 2.420 mSx2 = -4.790 tf
c) Bending Moment
MC = MCD = -1.828 tfm
MD = -MDC = -2.331 tfm
The maximum bending moment occurs at the point of that shearing force equal to zero.
Sx = 0 = SCD - w1x - (w2 - w1)x2/(2L)
= 3.7288 -1.1000 x -1.0000 x2 , x = -2.5581.458
Bending moment at x 1.4578 m is;
Mmax = SCDx - w1x2/2 - (w2-w1)x
3/(6L) + MCD = 1.40650 tfm
2-4) Bottom Slaba) Shearing Force at joint
w1 Reaction at end D 5.003 tf/m2
w2 Reaction at end A 5.003 tf/m2
MDA Bending moment at end B -2.33054 tfm
MAD Bending moment at end C 2.33054 tfm
L Length of member (=B0) 2.200 mch Protective covering height 0.060 m
t Thickness of member (height) 0.200 md Effective height of member 0.140 m
SDA = (2w1+w2)L/6 - (MDA+MAD)/L
= 5.503 tf
SAD = SDA - L(w1+w2)/2 = -5.503 tf
b) Shearing Force at 2d point from jointShearing force at the point with a distance of 2d from joint is calculated by following equation.
Sx = SDA- w1x - (w2 - w1)x2/(2L)
(i) In case of x1 = 0.280 mSx1 = 4.102 tf
(ii) In case of x2 = 1.920 mSx2 = -4.102 tf
c) Bending Moment
MD = MDA
= -2.331 tf m
MA = -MAD = -2.331 tf m
The maximum bending moment occurs at the point of that shearing force equal to zero.
Sx = 0 = SDA - w1x - (w2 - w1)x2/(2L)
= 5.5029 -5.0026 x , x = 1.100
Bending moment at x 1.1000 m is;
Mmax = SDAx - w1x2/2 - (w2-w1)x
3/(6L) + MDA = 0.696 tfm
L
x
D
MDA
w1w2
A
MAD
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Case 2: Box Culvert Inside is Empty, Underground Water up to Top slab, Track load Case. L2
1) Calculation of Load Term
Ph1 Horizontal Pressure at top of side wall 1.874 tf/m2
Ph2 Horizontal Pressure at bottom of side wall 7.274 tf/m2
Pv1 Vertical Pressure(1) on top slab 3.915 tf/m2
Pv2 Vertical Pressure(2) on top slab 0.000tf/m
2
Pq Reaction to bottom slab 5.006 tf/m2
a Distance from joint B to far end of Pv2 2.200 mb Distance from joint B to near end of Pv2 0.000 mH0 Height of plane frame 2.700 mB0 Width of plane frame 2.200 mt1 Thickness of side wall 0.200 mt2 Thickness of top slab 0.200 mt3 Thickness of invert (bottom slab) 0.200 m
CAB = CDC = (2Ph1+3Ph2)H02/60 = 3.10664 tfm
CBA = CCD = (3Ph1+2Ph2)H02/60 = 2.45054 tfm
CBC = CCB = Pv1B02/12 + {(a
2-b
2)B0
2/2 - 2B0(a
3-b
3)/3 + (a
4-b
4)/4}Pv2/B0
2 = 1.57901 tfm
CDA = CAD = PqB02/12 = 2.01901 tfm
2) Calculation of Bending Moment at joint
k1 = 1.0
k2 = H0t23/(B0t1
3) = 1.22727
k3 = H0t33/(B0t1
3) = 1.22727
2(k1+k3) k1 0 k3 -3k1 qA CAB - CAD
k1 2(k1+k2) k2 0 -3k1 qB CBC - CBA
0 k2 2(k1+k2) k1 -3k1 qC = CCD - CCB
k3 0 k1 2(k1+k3) -3k1 qD CDA - CDC
k1 k1 k1 k1 -4k1 R 0
As load has bilateral symmetry, the equation shown below is formed.
qA = -qD qB = -qC R =0
2k1+k3 k1 qA
k1 2k1+k2 qB
3.2273 1.0 qA1.0 3.2273 qB
By solving above equation, the result is led as shown below.
qA = 0.46537 qC = 0.41425
qB = -0.41425 qD = -0.46537
=CAB - CAD
CBC - CBA
=1.08763294
-0.87153294
B
A
(t2)
(t1)
B0
(t3)
(t1)
C
H0
D
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MAB = k1(2qA +qB) - CAB = -2.5901 tfm
MBA = k1(2qB+qA)+CBA = 2.0874 tfm
MBC = k2(2qB+qC) - CBC = -2.0874 tfm
MCB = k2(2qC+qB)+CCB = 2.0874 tf m
MCD = k1(2qC+qD) - CCD = -2.0874 tfm
MDC =k1 (2qD+ qC)+CDC = 2.5901 tfm
MDA = k3(2qD+qA) - CDA = -2.5901 tfm
MAD = k3(2qA+qD)+CAD = 2.5901 tfm
2) Calculation of Design Force2-1) Side Wall in left
a) Shearing Force at joint
w1 Load at end A 7.274 tf/m2
w2 Load at end B 1.874 tf/m2
MAB Bending moment at end A -2.5901 tfm
MBA Bending moment at end B 2.0874 tfm
L Length of member (=H0) 2.700 m
ch Protective covering height 0.060 mt Thickness of member (height) 0.200 md Effective height of member 0.140 m
SAB = (2w1+w2)L/6 - (MAB+MBA)/L
= 7.5758 tf
SBA = SAB - L(w1+w2)/2 = -4.7734 tf
b) Shearing Force at 2d point from jointShearing force at the point with a distance of 2d from joint is calculated by following equation.
Sx = SAB - w1x - (w2 - w1)x2/(2L)
(i) In case of x1 = 0.280 mSx1 = 5.618 tf
(ii) In case of x2 = 2.42 mSx2 = -4.170 tf
c) Bending Moment
MA = MAB = -2.590 tfm
MB = -MBA = -2.087 tfm
The maximum bending moment occurs at the point of that shearing force equal to zero.
Sx = 0 = SAB - w1x - (w2 - w1)x2/(2L)
= 7.5758 -7.2738 x + 1.0000 x2 , x = 6.0141.260
Bending moment at x 1.2597 m is;Mmax = SABx - w1x
2/2 - (w2-w1)x
3/(6L) + MAB = 1.848 tfm
w1
w2
A
B
Lx
MAB
MBA
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2-2) Top Slaba) Shearing Force at joint
w1 Uniform load 3.915 tf/m2
w2 Uniform load 0.000 tf/m2
a Distance from end B to near end of 0.000 m
b Length of uniform load w2 2.200 mMBC Bending moment at end B -2.0874 tfm
MCB Bending moment at end C 2.0874 tfm
L Length of member (=Bo) 2.200 mch Protective covering height 0.060 mt Thickness of member (height) 0.200 md Effective height of member 0.140 m
SBC = (w1L+w2b)/2-(MBC+MCB)/L = 4.306 tf
SCB = SBC -w1L - w2b = -4.306 tf
b) Shearing Force at 2d point from jointShearing force at the point with a distance of 2d from joint is calculated by following equation.
Sx = SBC - w1x - w2(x-a) in case of 0.000 m
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b) Shearing Force at 2d point from jointShearing force at the point with a distance of 2d from joint is calculated by following equation.
Sx = SCD - w1x - (w2 - w1)x2/(2L)
(i) In case of x1 = 0.280 m
Sx1 = 4.170 tf (ii) In case of x2 = 2.420 m
Sx2 = -5.618 tf
c) Bending Moment
MC = MCD = -2.087 tfm
MD = -MDC = -2.590 tf m
The maximum bending moment occurs at the point of that shearing force equal to zero.
Sx = 0 = SCD - w1x - (w2 - w1)x2/(2L)
= 4.7734 -1.8738 x -1.0000 x2 , x = -3.3141
1.4403
Bending moment at x 1.4403 m is;
Mmax = SCDx - w1x2/2 - (w2-w1)x
3/(6L) + MCD = 1.8483 tfm
2-4) Bottom Slaba) Shearing Force at joint
w1 Reaction at end D 5.006 tf/m2
w2 Reaction at end A 5.006 tf/m2
MDA Bending moment at end B -2.5901 tfm
MAD Bending moment at end C 2.5901 tfm
L Length of member (=B0) 2.200 mch Protective covering height 0.060 mt Thickness of member (height) 0.200 md Effective height of member 0.140 m
SDA = (2w1+w2)L/6 - (MDA+MAD)/L
= 5.506 tf
SAD = SDA - L(w1+w2)/2 = -5.506 tf
b) Shearing Force at 2d point from jointShearing force at the point with a distance of 2d from joint is calculated by following equation.
Sx = SDA- w1x - (w2 - w1)x2/(2L)
(i) In case of x1 = 0.280 mSx1 = 4.105 tf
(ii) In case of x2 = 1.920 mSx2 = -4.105 tf
c) Bending Moment
MD = MDA = -2.590 tfm
MA = -MAD = -2.590 tfmThe maximum bending moment occurs at the point of that shearing force equal to zero.
Sx = 0 = SDA - w1x - (w2 - w1)x2/(2L)
= 5.5064 -5.0058 x , x = 1.1000
Bending moment at x 1.1000 m is;
Mmax = SDAx - w1x2/2 - (w2-w1)x
3/(6L) + MDA = 0.438 tfm
L
x
D
MDA
w1w2
A
MAD
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Case 3: Box Culvert Inside is Full, Underground Water up to invert, Track load Case. L1
1) Calculation of Load Term
Ph1 Horizontal Pressure at top of side wall 0.990 tf/m2
Ph2 Horizontal Pressure at bottom of side wall 0.920 tf/m2
Pv1 Vertical Pressure(1) on top slab 3.912 tf/m2
Pv2 Vertical Pressure(2) on top slab 0.000tf/m
2
Pq Reaction to bottom slab 5.003 tf/m2
a Distance from joint B to far end of Pv2 2.200 mb Distance from joint B to near end of Pv2 0.000 mH0 Height of plane frame 2.700 mB0 Width of plane frame 2.200 mt1 Thickness of side wall 0.200 mt2 Thickness of top slab 0.200 mt3 Thickness of invert (bottom slab) 0.200 m
CAB = CDC = (2Ph1+3Ph2)H02/60 = 0.57591 tfm
CBA = CCD = (3Ph1+2Ph2)H02/60 = 0.58442 tfm
CBC = CCB = Pv1B02/12 + {(a
2-b
2)B0
2/2 - 2B0(a
3-b
3)/3 + (a
4-b
4)/4}Pv2/B0
2 = 1.57772 tfm
CDA = CAD = PqB02/12 = 2.01772 tfm
2) Calculation of Bending Moment at joint
k1 = 1.0
k2 = H0t23/(B0t1
3) = 1.22727
k3 = H0t33/(B0t1
3) = 1.22727
2(k1+k3) k1 0 k3 -3k1 qA CAB - CAD
k1 2(k1+k2) k2 0 -3k1 qB CBC - CBA
0 k2 2(k1+k2) k1 -3k1 qC = CCD - CCB
k3 0 k1 2(k1+k3) -3k1 qD CDA - CDC
k1 k1 k1 k1 -4k1 R 0
As load has bilateral symmetry, the equation shown below is formed.
qA = -qD qB = -qC R =0
2k1+k3 k1 qA
k1 2k1+k2 qB
3.2273 1.0 qA
1.0 3.2273 qB
By solving above equation, the result is led as shown below.
qA = -0.59971 qC = -0.49361
qB = 0.49361 qD = 0.59971
=CAB - CAD
CBC - CBA
=-1.44180667
0.99330167
B
A
(t2)
(t1)
B0
(t3)
(t1)
C
H0
D
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MAB = k1(2qA +qB) - CAB = -1.28171 tfm
MBA = k1(2qB+qA)+CBA = 0.97193 tfm
MBC = k2(2qB+qC) - CBC = -0.97193 tfm
MCB = k2(2qC+qB)+CCB = 0.97193 tf m
MCD = k1(2qC+qD) - CCD = -0.97193 tfm
MDC =k1 (2qD+ qC)+CDC = 1.28171 tfm
MDA = k3(2qD+qA) - CDA = -1.28171 tfm
MAD = k3(2qA+qD)+CAD = 1.28171 tfm
2) Calculation of Design Force2-1) Side Wall in left
a) Shearing Force at joint
w1 Load at end A 0.920 tf/m2
w2 Load at end B 0.990 tf/m2
MAB Bending moment at end A -1.2817 tfm
MBA Bending moment at end B 0.9719 tfm
L Length of member (=H0) 2.700 m
ch Protective covering height 0.060 mt Thickness of member (height) 0.200 md Effective height of member 0.140 m
SAB = (2w1+w2)L/6 - (MAB+MBA)/L
= 1.388 tf
SBA = SAB - L(w1+w2)/2 = -1.190 tf
b) Shearing Force at 2d point from jointShearing force at the point with a distance of 2d from joint is calculated by following equation.
Sx = SAB - w1x - (w2 - w1)x2/(2L)
(i) In case of x1 = 0.280 m
Sx1 = 1.130 tf
(ii) In case of x2 = 2.420 m
Sx2 = -0.914 tf
c) Bending Moment
MA = MAB = -1.282 tfm
MB = -MBA = -0.972 tfm
The maximum bending moment occurs at the point of that shearing force equal to zero.
Sx = 0 = SAB - w1x - (w2 - w1)x2/(2L)
= 1.3882 -0.9200 x + -0.0130 x2 , x = -72.4501.478
Bending moment at x 1.4782 m is;Mmax = SABx - w1x
2/2 - (w2-w1)x
3/(6L) + MAB = -0.249 tfm
w1
w2
A
B
Lx
MAB
MBA
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2-2) Top Slaba) Shearing Force at joint
w1 Uniform load 3.912 tf/m2
w2 Uniform load 0.000 tf/m2
a Distance from end B to near end of 0.000 m
b Length of uniform load w2 2.200 mMBC Bending moment at end B -0.972 tfm
MCB Bending moment at end C 0.972 tfm
L Length of member (=Bo) 2.200 mch Protective covering height 0.060 mt Thickness of member (height) 0.200 md Effective height of member 0.140 m
SBC = (w1L+w2b)/2-(MBC+MCB)/L = 4.303 tf
SCB = SBC -w1L - w2b = -4.303 tf
b) Shearing Force at 2d point from jointShearing force at the point with a distance of 2d from joint is calculated by following equation.
Sx = SBC - w1x - w2(x-a) in case of 0.000 m
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b) Shearing Force at 2d point from jointShearing force at the point with a distance of 2d from joint is calculated by following equation.
Sx = SCD - w1x - (w2 - w1)x2/(2L)
(i) In case of x1 = 0.280 m
Sx1 = 0.914 tf (ii) In case of x2 = 2.420 m
Sx2 = -1.130 tf
c) Bending Moment
MC = MCD = -0.972 tfm
MD = -MDC = -1.282 tf m
The maximum bending moment occurs at the point of that shearing force equal to zero.
Sx = 0 = SCD - w1x - (w2 - w1)x2/(2L)
= 1.1903 -0.9900 x + 0.0130 x2 , x = 75.15
1.222
Bending moment at x 1.2218 m is;
Mmax = SCDx - w1x2/2 - (w2-w1)x
3/(6L) + MCD = -0.249 tfm
2-4) Bottom Slaba) Shearing Force at joint
w1 Reaction at end D 5.003 tf/m2
w2 Reaction at end A 5.003 tf/m2
MDA Bending moment at end B -1.282 tfm
MAD Bending moment at end C 1.282 tfm
L Length of member (=B0) 2.200 mch Protective covering height 0.060 mt Thickness of member (height) 0.200 md Effective height of member 0.140 m
SDA = (2w1+w2)L/6 - (MDA+MAD)/L
= 5.503 tf SAD = SDA - L(w1+w2)/2 = -5.503 tf
b) Shearing Force at 2d point from jointShearing force at the point with a distance of 2d from joint is calculated by following equation.
Sx = SDA- w1x - (w2 - w1)x2/(2L)
(i) In case of x1 = 0.280 mSx1 = 4.102 tf
(ii) In case of x2 = 1.920 mSx2 = -4.102 tf
c) Bending Moment
MD = MDA = -1.282 tfm
MA = -MAD = -1.282 tfm
The maximum bending moment occurs at the point of that shearing force equal to zero.
Sx = 0 = SDA - w1x - (w2 - w1)x2/(2L)
= 5.5029 -5.0026 x , x = 1.100
Bending moment at x 1.1000 m is;
Mmax = SDAx - w1x2/2 - (w2-w1)x
3/(6L) + MDA = 1.745 tfm
L
x
D
MDA
w1w2
A
MAD
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Case 4: Box Culvert Inside is Full, Underground Water up to invert, Track load Case. L2
1) Calculation of Load Term
Ph1 Horizontal Pressure at top of side wall 1.764 tf/m2
Ph2 Horizontal Pressure at bottom of side wall 1.694 tf/m2
Pv1 Vertical Pressure(1) on top slab 3.915 tf/m2
Pv2 Vertical Pressure(2) on top slab 0.000 tf/m2
Pq Reaction to bottom slab 5.006 tf/m2
a Distance from joint B to far end of Pv2 2.200 m
b Distance from joint B to near end of Pv2 0.000 mH0 Height of plane frame 2.700 mB0 Width of plane frame 2.200 mt1 Thickness of side wall 0.200 mt2 Thickness of top slab 0.200 mt3 Thickness of invert (bottom slab) 0.200 m
CAB = CDC = (2Ph1+3Ph2)H02/60 = 1.04600 tfm
CBA = CCD = (3Ph1+2Ph2)H02/60 = 1.05450 tfm
CBC
= CCB
= Pv1B0
2/12 + {(a
2-b
2)B
0
2/2 - 2B
0(a
3-b
3)/3 + (a
4-b
4)/4}Pv2/B
0
2 = 1.57901 tfm
CDA = CAD = PqB02/12 = 2.01901 tfm
2) Calculation of Bending Moment at joint
k1 = 1.0
k2 = H0t23/(B0t1
3) = 1.22727
k3 = H0t33/(B0t1
3) = 1.22727
2(k1+k3) k1 0 k3 -3k1 qA CAB - CAD
k1 2(k1+k2) k2 0 -3k1 qB CBC - CBA
0 k2 2(k1+k2) k1 -3k1 qC = CCD - CCB
k3 0 k1 2(k1+k3) -3k1 qD CDA - CDC
k1 k1 k1 k1 -4k1 R 0
As load has bilateral symmetry, the equation shown below is formed.
qA = -qD qB = -qC R =0
2k1+k3 k1 qA
k1 2k1+k2 qB
3.2273 1.0 qA
1.0 3.2273 qB
By solving above equation, the result is led as shown below.
qA = -0.38922 qC = -0.28313
qB = 0.28313 qD = 0.38922
=CAB - CAD
CBC - CBA
=-0.97300706
0.52450206
B
A
(t2)
(t1)
B0
(t3)
(t1)
C
H0
D
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MAB = k1(2qA +qB) - CAB = -1.54132 tfm
MBA = k1(2qB+qA)+CBA = 1.23153 tfm
MBC = k2(2qB+qC) - CBC = -1.23153 tfm
MCB = k2(2qC+qB)+CCB = 1.23153 tfm
MCD = k1(2qC+qD) - CCD = -1.23153 tfm
MDC =k1 (2qD+ qC)+CDC = 1.54132 tf m
MDA = k3(2qD+qA) - CDA = -1.54132 tfm
MAD = k3(2qA+qD)+CAD = 1.54132 tfm
2) Calculation of Design Force2-1) Side Wall in left
a) Shearing Force at joint
w1 Load at end A 1.694 tf/m2
w2 Load at end B 1.764 tf/m2
MAB Bending moment at end A -1.541 tfm
MBA Bending moment at end B 1.232 tfm
L Length of member (=H0) 2.700 mch Protective covering height 0.060 mt Thickness of member (height) 0.200 md Effective height of member 0.140 m
SAB = (2w1+w2)L/6 - (MAB+MBA)/L
= 2.433 tf
SBA = SAB - L(w1+w2)/2 = -2.235 tf
b) Shearing Force at 2d point from jointShearing force at the point with a distance of 2d from joint is calculated by following equation.
Sx = SAB - w1x - (w2 - w1)x2/(2L)
(i) In case of x1 = 0.280 m
Sx1 = 1.958 tf (ii) In case of x2 = 2.42 m
Sx2 = -1.742 tf
c) Bending Moment
MA = MAB = -1.541 tfm
MB = -MBA = -1.232 tfm
The maximum bending moment occurs at the point of that shearing force equal to zero.
Sx = 0 = SAB - w1x - (w2 - w1)x2/(2L)
= 2.4329 -1.6938 x + -0.0130 x2 , x = -132.086
1.421
Bending moment at x 1.4209 m is;
Mmax = SABx - w1x2/2 - (w2-w1)x
3/(6L) + MAB = 0.193 tfm
w1
w2
A
B
L
x
MAB
MBA
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2-2) Top Slaba) Shearing Force at joint
w1 Uniform load 3.915 tf/m2
w2 Uniform load 0.000 tf/m2
a Distance from end B to near end of 0.000 m
b Length of uniform load w2 2.200 mMBC Bending moment at end B -1.232 tfm
MCB Bending moment at end C 1.232 tfm
L Length of member (=Bo) 2.200 mch Protective covering height 0.060 mt Thickness of member (height) 0.200 md Effective height of member 0.140 m
SBC = (w1L+w2b)/2-(MBC+MCB)/L = 4.306 tf
SCB = SBC -w1L - w2b = -4.306 tf
b) Shearing Force at 2d point from jointShearing force at the point with a distance of 2d from joint is calculated by following equation.
Sx = SBC - w1x - w2(x-a) in case of 0.000 m
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b) Shearing Force at 2d point from jointShearing force at the point with a distance of 2d from joint is calculated by following equation.
Sx = SCD - w1x - (w2 - w1)x2/(2L)
(i) In case of x1 = 0.280 mSx1 = 1.7421 tf
(ii) In case of x2 = 2.420 m
Sx2 = -1.9576 tf
c) Bending Moment
MC = MCD = -1.232 tfm
MD = -MDC = -1.541 tfm
The maximum bending moment occurs at the point of that shearing force equal to zero.
Sx = 0 = SCD - w1x - (w2 - w1)x2/(2L)
= 2.2349 -1.7638 x + 0.0130 x2 , x = 134.8
1.279
Bending moment at x 1.2791 m is;
Mmax = SCDx - w1x2/2 - (w2-w1)x
3/(6L) + MCD = 0.193 tfm
2-4) Bottom Slaba) Shearing Force at joint
w1 Reaction at end D 5.006 tf/m2
w2 Reaction at end A 5.006 tf/m2
MDA Bending moment at end B -1.541 tfm
MAD Bending moment at end C 1.541 tfm
L Length of member (=B0) 2.200 mch Protective covering height 0.060 mt Thickness of member (height) 0.200 md Effective height of member 0.140 m
SDA = (2w1+w2)L/6 - (MDA+MAD)/L
= 5.506 tf
SAD = SDA - L(w1+w2)/2 = -5.506 tf
b) Shearing Force at 2d point from jointShearing force at the point with a distance of 2d from joint is calculated by following equation.
Sx = SDA- w1x - (w2 - w1)x2/(2L)
(i) In case of x1 = 0.280 mSx1 = 4.105 tf
(ii) In case of x2 = 1.920 mSx2 = -4.105 tf
c) Bending Moment
MD = MDA = -1.541 tfm
MA = -MAD = -1.541 tfm
The maximum bending moment occurs at the point of that shearing force equal to zero.
Sx = 0 = SDA - w1x - (w2 - w1)x2/(2L)
= 5.5064 -5.0058 x , x = 1.100
Bending moment at x 1.1000 m is;
Mmax = SDAx - w1x2/2 - (w2-w1)x
3/(6L) + MDA = 1.487 tfm
L
x
D
MDA
w1w2
A
MAD
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Summary of Internal forces
M N
(tfm) (tf) at joint at 2dSide wall A -2.331 5.503 6.531 4.790
(left) Case.1 Middle 1.407 4.951 0.000 -B -1.828 4.303 -3.729 -3.342A -2.590 5.506 7.576 5.618
Case.2 Middle 1.848 4.947 0.000 -B -2.087 4.306 -4.773 -4.170A -1.282 5.503 1.388 1.130
Case.3 Middle -0.249 4.846 0.000 -B -0.972 4.303 -1.190 -0.914A -1.541 5.506 2.433 1.958
Case.4 Middle 0.193 4.875 0.000 -B -1.232 4.306 -2.235 -1.742
Top slab B -1.828 3.729 4.303 3.208Case.1 Middle 0.539 3.729 0.000 -
C -1.828 3.729 -4.303 -3.208
B -2.087 4.773 4.306 3.210Case.2 Middle 0.281 4.773 0.000 -
C -2.087 4.773 -4.306 -3.210B -0.972 1.190 4.303 3.208
Case.3 Middle 1.395 1.190 0.000 -C -0.972 1.190 -4.303 -3.208B -1.232 2.235 4.306 3.210
Case.4 Middle 1.137 2.235 0.000 -C -1.232 2.235 -4.306 -3.210
Side wall C -1.828 4.303 3.729 3.342(right) Case.1 Middle 1.407 4.951 0.000 -
D -2.331 5.503 -6.531 -4.790C -2.087 4.306 4.773 4.170
Case.2 Middle 1.848 4.947 0.000 -D -2.590 5.506 -7.576 -5.618C -0.972 4.303 1.190 0.914
Case.3 Middle -0.249 4.846 0.000 -D -1.282 5.503 -1.388 -1.130C -1.232 4.306 2.235 1.742
Case.4 Middle 0.193 4.875 0.000 -D -1.541 5.506 -2.433 -1.958
Invert D -2.331 6.531 5.503 4.102Case.1 Middle 0.696 6.531 0.000 -
A -2.331 6.531 -5.503 -4.102D -2.590 7.576 5.506 4.105
Case.2 Middle 0.438 7.576 0.000 -A -2.590 7.576 -5.506 -4.105D -1.282 1.388 5.503 4.102
Case.3 Middle 1.745 1.388 0.000 -
A -1.282 1.388 -5.503 -4.102D -1.541 2.433 5.506 4.105
Case.4 Middle 1.487 2.433 0.000 -A -1.541 2.433 -5.506 -4.105
S (tf)Member Case
Check
Point
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5 Calculation of Required Reinforcement Bar5-1 Calculation of Required Reinforcement Bar
1) At Joint "A" of side wall
Case.1
M= 2.3305 tfm sca = 60 kgf/m2 h = 20 cm (height of membeN= 5.5029 tf ssa = 1400 kgf/m2 d = 14 cm (effective height
S0= 6.5312 tf n = 24 d' = 6 cm (protective coverS2d= 4.7896 tf c = 4.00 cm (distance from ne
b = 100 cm
e = M/N = 42.35 cmSolving the formula shown below, sc 38.729 kgf/cm2 ( -178470 kgf/cm2) check sc^3+{3ssa/(2n) - 3N(e+c)/(bd^2)}sc^2 - 6N(e+c)ssasc/(nbd^2) - 3N(e+c)ssa^2/(n^2bd^2) = 0
0 = sc^3 +48.46 sc^2 -4554.7 sc -132846.49s = nsc/(nsc+ssa) = 0.3990Asreq = (sc*s/2 - N/(bd))bd/ssa = 3.7960 cm2
Case.2
M= 2.5901 tfm sca = 60 kgf/m2 h = 20 cm (height of membe
N= 5.5064 tf ssa = 1400 kgf/m2 d = 14 cm (effective height
S0= 7.5758 tf n = 24 d' = 6 cm (protective coverS2d= 5.6176 tf c = 4.00 cm (distance from ne
b = 100 cm
e = M/N = 47.04 cmSolving the formula shown below, sc 39.304 kgf/cm2 ( -214195 kgf/cm2) check sc^3+{3ssa/(2n) - 3N(e+c)/(bd^2)}sc^2 - 6N(e+c)ssasc/(nbd^2) - 3N(e+c)ssa^2/(n^2bd^2) = 0 0 = sc^3 +44.48 sc^2 -5018.6 sc -146375.06s = nsc/(nsc+ssa) = 0.4026Asreq = (sc*s/2 - N/(bd))bd/ssa = 3.9778 cm2
Case.3M= 1.2817 tfm sca = 60 kgf/m2 h = 20 cm (height of membe
N= 5.5029 tf ssa = 1400 kgf/m2 d = 14 cm (effective height
S0= 1.3882 tf n = 24 d' = 6 cm (protective cover
S2d= 1.1296 tf c = 4.00 cm (distance from ne
b = 100 cme = M/N = 23.29 cmSolving the formula shown below, sc 34.762 kgf/cm2 ( -51486 kgf/cm2) check sc^3+{3ssa/(2n) - 3N(e+c)/(bd^2)}sc^2 - 6N(e+c)ssasc/(nbd^2) - 3N(e+c)ssa^2/(n^2bd^2) = 0
0 = sc^3 +64.51 sc^2 -2681.8 sc -78220.23s = nsc/(nsc+ssa) = 0.3734Asreq = (sc*s/2 - N/(bd))bd/ssa = 2.5595 cm2
Case.4
M= 1.5413 tfm sca = 60 kgf/m2 h = 20 cm (height of membeN= 5.5064 tf ssa = 1400 kgf/m2 d = 14 cm (effective height
S0= 2.4329 tf n = 24 d' = 6 cm (protective cover
S2d= 1.9576 tf c = 4.00 cm (distance from ne
b = 100 cm
e = M/N = 27.99 cmSolving the formula shown below, sc 35.359 kgf/cm2 ( -83078 kgf/cm2) check sc^3+{3ssa/(2n) - 3N(e+c)/(bd^2)}sc^2 - 6N(e+c)ssasc/(nbd^2) - 3N(e+c)ssa^2/(n^2bd^2) = 0
0 = sc^3 +60.54 sc^2 -3145.7 sc -91748.80s = nsc/(nsc+ssa) = 0.3774Asreq = (sc*s/2 - N/(bd))bd/ssa = 2.7390 cm2
The maximum requirement of reinforcement bar is 3.9778 cm2 in Case2 from above calculation.
Case. 1 2 3 4
Requirement 3.7960 3.9778 2.5595 2.7390 (cm2)
2) At Joint "B" of side wall
Case.1
M= 1.8278 tfm sca = 60 kgf/m2 h = 20 cm (height of membeN= 4.3029 tf ssa = 1400 kgf/m2 d = 14 cm (effective height
S0= 3.7288 tf n = 24 d' = 6 cm (protective cover
S2d= 3.3424 tf c = 4.00 cm (distance from ne
b = 100 cm
e = M/N = 42.48 cmSolving the formula shown below, sc 34.350 kgf/cm2 ( -119177 kgf/cm2) check sc^3+{3ssa/(2n) - 3N(e+c)/(bd^2)}sc^2 - 6N(e+c)ssasc/(nbd^2) - 3N(e+c)ssa^2/(n^2bd^2) = 0
0 = sc^3 +56.89 sc^2 -3571.3 sc -104162.18s = nsc/(nsc+ssa) = 0.3706Asreq = (sc*s/2 - N/(bd))bd/ssa = 3.2920 cm2
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Case.3
M= 0.9719 tfm sca = 60 kgf/m2 h = 20 cm (height of memb
N= 4.3029 tf ssa = 1400 kgf/m2 d = 14 cm (effective height
S0= 1.1903 tf n = 24 d' = 6 cm (protective cove
S2d= 0.9141 tf c = 4.00 cm (distance from n
b = 100 cm
e = M/N = 22.59 cmSolving the formula shown below, sc 30.914 kgf/cm2 ( -26310 kgf/cm2) check sc^3+{3ssa/(2n) - 3N(e+c)/(bd^2)}sc^2 - 6N(e+c)ssasc/(nbd^2) - 3N(e+c)ssa^2/(n^2bd^2) = 0
0 = sc^3 +69.99 sc^2 -2042.9 sc -59585.39s = nsc/(nsc+ssa) = 0.3464Asreq = (sc*s/2 - N/(bd))bd/ssa = 2.2805 cm2
Case.4
M= 1.2315 tfm sca = 60 kgf/m2 h = 20 cm (height of memb
N= 4.3064 tf ssa = 1400 kgf/m2 d = 14 cm (effective height
S0= 2.2349 tf n = 24 d' = 6 cm (protective cove
S2d= 1.7421 tf c = 4.00 cm (distance from n
b = 100 cm
e = M/N = 28.60 cmSolving the formula shown below, sc 31.538 kgf/cm2 ( -55148 kgf/cm2) check sc^3+{3ssa/(2n) - 3N(e+c)/(bd^2)}sc^2 - 6N(e+c)ssasc/(nbd^2) - 3N(e+c)ssa^2/(n^2bd^2) = 0
0 = sc^3 +66.01 sc^2 -2506.8 sc -73113.96s = nsc/(nsc+ssa) = 0.3509Asreq = (sc*s/2 - N/(bd))bd/ssa = 2.4577 cm2
The maximum requirement of reinforcement bar is 3.4713 cm2 in Case2 from above calculation.
Case. 1 2 3 4
Requirement 3.2920 3.4713 2.2805 2.4577 (cm2)
3) At Joint "B" of top slab
Case.1
M= 1.8278 tfm sca = 60 kgf/m2 h = 20 cm (height of memb
N= 3.7288 tf ssa = 1400 kgf/m2 d = 14 cm (effective height
S0= 4.3029 tf n = 24 d' = 6 cm (protective cove
S2d= 3.2076 tf c = 4.00 cm (distance from n
b = 100 cm
e = M/N = 49.02 cm
Solving the formula shown below, sc 32.854 kgf/cm2 ( -121704 kgf/cm2) check sc^3+{3ssa/(2n) - 3N(e+c)/(bd^2)}sc^2 - 6N(e+c)ssasc/(nbd^2) - 3N(e+c)ssa^2/(n^2bd^2) = 0
0 = sc^3 +57.24 sc^2 -3530.3 sc -102966.22s = nsc/(nsc+ssa) = 0.3603Asreq = (sc*s/2 - N/(bd))bd/ssa = 3.2550 cm2
Case.2
M= 2.0874 tfm sca = 60 kgf/m2 h = 20 cm (height of memb
N= 4.7734 tf ssa = 1400 kgf/m2 d = 14 cm (effective height
S0= 4.3064 tf n = 24 d' = 6 cm (protective cove
S2d= 3.2102 tf c = 4.00 cm (distance from n
b = 100 cm
e = M/N = 43.73 cmSolving the formula shown below, sc 33.391 kgf/cm2 ( -158603 kgf/cm2) check sc^3+{3ssa/(2n) - 3N(e+c)/(bd^2)}sc^2 - 6N(e+c)ssasc/(nbd^2) - 3N(e+c)ssa^2/(n^2bd^2) = 0
0 = sc^3 +52.63 sc^2 -4068.5 sc -118663.80
s = nsc/(nsc+ssa) = 0.3640Asreq = (sc*s/2 - N/(bd))bd/ssa = 2.6683 cm2
Case.3
M= 0.9719 tfm sca = 60 kgf/m2 h = 20 cm (height of memb
N= 1.1903 tf ssa = 1400 kgf/m2 d = 14 cm (effective height
S0= 4.3029 tf n = 24 d' = 6 cm (protective cove
S2d= 3.2076 tf c = 4.00 cm (distance from n
b = 100 cm
e = M/N = 81.66 cmSolving the formula shown below, sc 28.090 kgf/cm2 ( -25354 kgf/cm2) check sc^3+{3ssa/(2n) - 3N(e+c)/(bd^2)}sc^2 - 6N(e+c)ssasc/(nbd^2) - 3N(e+c)ssa^2/(n^2bd^2) = 0
0 = sc^3 +71.89 sc^2 -1820.6 sc -53100.81s = nsc/(nsc+ssa) = 0.3250Asreq = (sc*s/2 - N/(bd))bd/ssa = 3.7147 cm2
Case.4
M= 1.2315 tfm sca = 60 kgf/m2 h = 20 cm (height of membN= 2.2349 tf ssa = 1400 kgf/m2 d = 14 cm (effective height
S0= 4.3064 tf n = 24 d' = 6 cm (protective cove
S2d= 3 2102 tf c = 4 00 cm (distance from n
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4) At Joint "A" of invert
Case.1
M= 2.3305 tfm sca = 60 kgf/m2 h = 20 cm (height of memb
N= 6.5312 tf ssa = 1400 kgf/m2 d = 14 cm (effective height
S0= 5.5029 tf n = 24 d' = 6 cm (protective cove
S2d= 4.1021 tf c = 4.00 cm (distance from n
b = 100 cme = M/N = 35.68 cmSolving the formula shown below, sc 37.763 kgf/cm2 ( -187704 kgf/cm2) check sc^3+{3ssa/(2n) - 3N(e+c)/(bd^2)}sc^2 - 6N(e+c)ssasc/(nbd^2) - 3N(e+c)ssa^2/(n^2bd^2) = 0
0 = sc^3 +47.83 sc^2 -4628.2 sc -134988.86s = nsc/(nsc+ssa) = 0.3930Asreq = (sc*s/2 - N/(bd))bd/ssa = 2.7547 cm2
Case.2
M= 2.5901 tfm sca = 60 kgf/m2 h = 20 cm (height of memb
N= 7.5758 tf ssa = 1400 kgf/m2 d = 14 cm (effective height
S0= 5.5064 tf n = 24 d' = 6 cm (protective cove
S2d= 4.1048 tf c = 4.00 cm (distance from n
b = 100 cm
e = M/N = 34.19 cmSolving the formula shown below, sc 38.275 kgf/cm2 ( -229043 kgf/cm2) check
sc^3+{3ssa/(2n) - 3N(e+c)/(bd^2)}sc^2 - 6N(e+c)ssasc/(nbd^2) - 3N(e+c)ssa^2/(n^2bd^2) = 0 0 = sc^3 +43.22 sc^2 -5166.4 sc -150686.44s = nsc/(nsc+ssa) = 0.3962Asreq = (sc*s/2 - N/(bd))bd/ssa = 2.1706 cm2
Case.3
M= 1.2817 tfm sca = 60 kgf/m2 h = 20 cm (height of memb
N= 1.3882 tf ssa = 1400 kgf/m2 d = 14 cm (effective height
S0= 5.5029 tf n = 24 d' = 6 cm (protective cove
S2d= 4.1021 tf c = 4.00 cm (distance from n
b = 100 cm
e = M/N = 92.33 cmSolving the formula shown below, sc 31.398 kgf/cm2 ( -47590 kgf/cm2) check sc^3+{3ssa/(2n) - 3N(e+c)/(bd^2)}sc^2 - 6N(e+c)ssasc/(nbd^2) - 3N(e+c)ssa^2/(n^2bd^2) = 0
0 = sc^3 +67.03 sc^2 -2387.9 sc -69648.09s = nsc/(nsc+ssa) = 0.3499Asreq = (sc*s/2 - N/(bd))bd/ssa = 4.5017 cm2
Case.4
M= 1.5413 tfm sca = 60 kgf/m2 h = 20 cm (height of memb
N= 2.4329 tf ssa = 1400 kgf/m2 d = 14 cm (effective height
S0= 5.5064 tf n = 24 d' = 6 cm (protective cove
S2d= 4.1048 tf c = 4.00 cm (distance from n
b = 100 cm
e = M/N = 63.35 cmSolving the formula shown below, sc 31.945 kgf/cm2 ( -82522 kgf/cm2) check sc^3+{3ssa/(2n) - 3N(e+c)/(bd^2)}sc^2 - 6N(e+c)ssasc/(nbd^2) - 3N(e+c)ssa^2/(n^2bd^2) = 0
0 = sc^3 +62.42 sc^2 -2926.1 sc -85345.67s = nsc/(nsc+ssa) = 0.3539Asreq = (sc*s/2 - N/(bd))bd/ssa = 3.9142 cm2
The maximum requirement of reinforcement bar is 4.5017 cm2 in Case3 from above calculation.
Case. 1 2 3 4Requirement 2.7547 2.1706 4.5017 3.9142 (cm2)
5) At Middle of side wall
Case.1
M= 1.4065 tfm sca = 60 kgf/m2 h = 20 cm (height of memb
N= 4.9508 tf ssa = 1400 kgf/m2 d = 14 cm (effective height
n = 24 d' = 6 cm (protective cove
c = 4.00 cm (distance from n
b = 100 cm
e = M/N = 28.41 cmSolving the formula shown below, sc 21.9840 kgf/cm2 ( -105515 kgf/cm2) check sc^3+{3ssa/(2n) - 3N(e+c)/(bd^2)}sc^2 - 6N(e+c)ssasc/(nbd^2) - 3N(e+c)ssa^2/(n^2bd^2) = 0
0 = sc^3 +62.94 sc^2 -2865.2 sc -83569.35s = nsc/(nsc+ssa) = 0.2737
Asreq = (sc*s/2 - N/(bd))bd/ssa = 0.0000 cm2 Tensile is on inside of member
Case.2
M= 1.8483 tfm sca = 60 kgf/m2 h = 20 cm (height of memb
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Case.3
M= 0.2487 tfm sca = 60 kgf/m2 h = 20 cm (height of memb
N= 4.8459 tf ssa = 1400 kgf/m2 d = 14 cm (effective height
n = 24 d' = 6 cm (protective cove
c = 4.00 cm (distance from n
b = 100 cm
e = M/N = 5.13 cmSolving the formula shown below, sc 16.634 kgf/cm2 ( -9256 kgf/cm2) check sc^3+{3ssa/(2n) - 3N(e+c)/(bd^2)}sc^2 - 6N(e+c)ssasc/(nbd^2) - 3N(e+c)ssa^2/(n^2bd^2) = 0
0 = sc^3 +80.73 sc^2 -790.27 sc -23049.47s = nsc/(nsc+ssa) = 0.2219Asreq = (sc*s/2 - N/(bd))bd/ssa = 0.0000 cm2 Tensile is on outside of member
Case.4
M= 0.1933 tfm sca = 60 kgf/m2 h = 20 cm (height of memb
N= 4.8749 tf ssa = 1400 kgf/m2 d = 14 cm (effective height
n = 24 d' = 6 cm (protective cove
c = 4.00 cm (distance from n
b = 100 cm
e = M/N = 3.97 cmSolving the formula shown below, sc 16.839 kgf/cm2 ( -3998 kgf/cm2) check sc^3+{3ssa/(2n) - 3N(e+c)/(bd^2)}sc^2 - 6N(e+c)ssasc/(nbd^2) - 3N(e+c)ssa^2/(n^2bd^2) = 0
0 = sc^3 +81.56 sc^2 -693.38 sc -20223.53
s = nsc/(nsc+ssa) = 0.2240Asreq = (sc*s/2 - N/(bd))bd/ssa = 0.0000 cm2 Tensile is on inside of member
The maximum requirement of reinforcement bar is 0.0000 cm2 in Case1 from above calculation.
Case. 1 2 3 4
Requirement 0.0000 0.0000 - 0.0000 (cm2)
Side inside inside outside inside
6) At Middle of top slab
Case.1
M= 0.5388 tfm sca = 60 kgf/m2 h = 20 cm (height of memb
N= 3.7288 tf ssa = 1400 kgf/m2 d = 14 cm (effective height
n = 24 d' = 6 cm (protective cove
c = 4.00 cm (distance from n
b = 100 cm
e = M/N = 14.45 cmSolving the formula shown below, sc 27.583 kgf/cm2 ( 9834 kgf/cm2) check sc^3+{3ssa/(2n) - 3N(e+c)/(bd^2)}sc^2 - 6N(e+c)ssasc/(nbd^2) - 3N(e+c)ssa^2/(n^2bd^2) = 0
0 = sc^3 +76.97 sc^2 -1228.4 sc -35829.57s = nsc/(nsc+ssa) = 0.3210Asreq = (sc*s/2 - N/(bd))bd/ssa = 1.7643 cm2 Tensile is on inside of member
Case.2
M= 0.2811 tfm sca = 60 kgf/m2 h = 20 cm (height of memb
N= 4.7734 tf ssa = 1400 kgf/m2 d = 14 cm (effective height
n = 24 d' = 6 cm (protective cove
c = 4.00 cm (distance from n
b = 100 cm
e = M/N = 5.89 cmSolving the formula shown below, sc 28.160 kgf/cm2 ( 37662 kgf/cm2) check sc^3+{3ssa/(2n) - 3N(e+c)/(bd^2)}sc^2 - 6N(e+c)ssasc/(nbd^2) - 3N(e+c)ssa^2/(n^2bd^2) = 0
0 = sc^3 +80.27 sc^2 -842.93 sc -24585.42
s = nsc/(nsc+ssa) = 0.3256Asreq = (sc*s/2 - N/(bd))bd/ssa = 1.1745 cm2 Tensile is on inside of member
Case.3
M= 1.3946 tfm sca = 60 kgf/m2 h = 20 cm (height of memb
N= 1.1903 tf ssa = 1400 kgf/m2 d = 14 cm (effective height
n = 24 d' = 6 cm (protective cove
c = 4.00 cm (distance from n
b = 100 cm
e = M/N = 117.17 cmSolving the formula shown below, sc 29.939 kgf/cm2 ( -66752 kgf/cm2) check sc^3+{3ssa/(2n) - 3N(e+c)/(bd^2)}sc^2 - 6N(e+c)ssasc/(nbd^2) - 3N(e+c)ssa^2/(n^2bd^2) = 0
0 = sc^3 +65.42 sc^2 -2575.5 sc -75117.73s = nsc/(nsc+ssa) = 0.3392Asreq = (sc*s/2 - N/(bd))bd/ssa = 4.2268 cm2 Tensile is on inside of member
Case.4
M= 1.1370 tfm sca = 60 kgf/m2 h = 20 cm (height of membN= 2.2349 tf ssa = 1400 kgf/m2 d = 14 cm (effective height
n = 24 d' = 6 cm (protective cove
c = 4 00 cm (distance from n
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7) At Middle of invert
Case.1
M= 0.6960 tfm sca = 60 kgf/m2 h = 20 cm (height of memb
N= 6.5312 tf ssa = 1400 kgf/m2 d = 14 cm (effective height
n = 24 d' = 6 cm (protective cove
c = 4.00 cm (distance from n
b = 100 cme = M/N = 10.66 cmSolving the formula shown below, sc 31.3560 kgf/cm2 ( -1005 kgf/cm2) check sc^3+{3ssa/(2n) - 3N(e+c)/(bd^2)}sc^2 - 6N(e+c)ssasc/(nbd^2) - 3N(e+c)ssa^2/(n^2bd^2) = 0
0 = sc^3 +72.85 sc^2 -1709.4 sc -49858.59s = nsc/(nsc+ssa) = 0.3496Asreq = (sc*s/2 - N/(bd))bd/ssa = 0.8160 cm2 Tensile is on inside of member
Case.2
M= 0.4384 tfm sca = 60 kgf/m2 h = 20 cm (height of memb
N= 7.5758 tf ssa = 1400 kgf/m2 d = 14 cm (effective height
n = 24 d' = 6 cm (protective cove
c = 4.00 cm (distance from n
b = 100 cm
e = M/N = 5.79 cmSolving the formula shown below, sc 31.902 kgf/cm2 ( 29116 kgf/cm2) check
sc^3+{3ssa/(2n) - 3N(e+c)/(bd^2)}sc^2 - 6N(e+c)ssasc/(nbd^2) - 3N(e+c)ssa^2/(n^2bd^2) = 0 0 = sc^3 +76.15 sc^2 -1323.9 sc -38614.44s = nsc/(nsc+ssa) = 0.3535
Asreq = (sc*s/2 - N/(bd))bd/ssa = 0.2279 cm2 Tensile is on inside of member
Case.3
M= 1.7449 tfm sca = 60 kgf/m2 h = 20 cm (height of memb
N= 1.3882 tf ssa = 1400 kgf/m2 d = 14 cm (effective height
n = 24 d' = 6 cm (protective cove
c = 4.00 cm (distance from n
b = 100 cm
e = M/N = 125.69 cmSolving the formula shown below, sc 33.146 kgf/cm2 ( -98063 kgf/cm2) check sc^3+{3ssa/(2n) - 3N(e+c)/(bd^2)}sc^2 - 6N(e+c)ssasc/(nbd^2) - 3N(e+c)ssa^2/(n^2bd^2) = 0
0 = sc^3 +59.94 sc^2 -3215 sc -93770.34s = nsc/(nsc+ssa) = 0.3623Asreq = (sc*s/2 - N/(bd))bd/ssa = 5.0134 cm2 Tensile is on inside of member
Case.4
M= 1.4872 tfm sca = 60 kgf/m2 h = 20 cm (height of memb
N= 2.4329 tf ssa = 1400 kgf/m2 d = 14 cm (effective height
n = 24 d' = 6 cm (protective cove
c = 4.00 cm (distance from n
b = 100 cm
e = M/N = 61.13 cmSolving the formula shown below, sc 33.682 kgf/cm2 ( -67860 kgf/cm2) check
sc^3+{3ssa/(2n) - 3N(e+c)/(bd^2)}sc^2 - 6N(e+c)ssasc/(nbd^2) - 3N(e+c)ssa^2/(n^2bd^2) = 0
0 = sc^3 +63.25 sc^2 -2829.5 sc -82526.20s = nsc/(nsc+ssa) = 0.3660Asreq = (sc*s/2 - N/(bd))bd/ssa = 4.4269 cm2 Tensile is on inside of member
The maximum requirement of reinforcement bar is 5.0134 cm2 in Case3 from above calculation.
Case. 1 2 3 4Requirement 0.8160 0.2279 5.0134 4.4269 (cm2)
Side inside inside inside inside
8) Summary of required reinforcement
Required reinforcement for design is the maximum required reinforcement calculated above in 1) - 4).
Item Side wall Side wall Top slab Invert Side wall Top slab Invert
Point bottom top end end middle middle middle
Side outside outside outside outside inside inside inside
Calculation 1) 2) 3) 4) 5) 6) 7)
Requirement 3.978 3.471 3.715 4.502 0.000 4.227 5.013 (cm2)
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6 Bar Arrangement and Calculation of StressType: B2.00m x H2.50m
bottom middle top end middle end middle
outside inside outside outside inside outside inside
Bending moment M kgfcm 259,015 140,650 208,741 97,193 139,465 128,171 174,486
Shearing force (joint) S kgf 7,576 0 4,773 4,306 0 5,506 0
Shearing force (2d) S2d kgf 5,618 - 4,170 3,210 - 4,105 -Axial force N kgf 5,506 4,951 4,306 1,190 1,190 1,388 1,388
Height of member h cm 20 20 20 20 20 20 20
Covering depth d' cm 6 6 6 6 6 6 6
Effective height d cm 14 14 14 14 14 14 14
Effective width b cm 100 100 100 100 100 100 100
Effective area bd cm2 1400 1400 1400 1400 1400 1400 1400
Young's modulus ratio n - 24 24 24 24 24 24 24
Required R-bar Asreq cm2 3.98 0.00 3.47 3.71 4.23 4.50 5.01
R-bar arrangement 16@250 12@250 16@250 16@250 16@250 16@250 12@125
Reinforcement As cm2 8.04 4.52 8.04 8.04 8.04 8.04 9.05
Perimeter of R-bar U 20.11 15.08 20.11 20.11 20.11 20.11 30.16
M/N e cm 47.039 28.410 48.472 81.656 117.172 92.327 125.689
Dist. from neutral axis c cm 4.00 4.00 4.00 4.00 4.00 4.00 4.00
a' 111.1 55.2 115.4 215.0 321.5 247.0 347.1
b' 590.9 210.9 607.5 991.7 1402.9 1115.2 1690.1
c' -8272.7 -2953.3 -8505.1 -13883.7 -19640.3 -15613.3 -23661.5
x 10.16 17.62 10.19 9.38 8.92 9.69 9.27
######## ######## ######## ######## ######## ######## ########
(check) check check check check check check check
Compressive stress sc kgf/cm2 12.7 5.5 9.9 3.2 3.5 3.5 3.9
Allowable stress sca kgf/cm2 60.0 60.0 60.0 60.0 60.0 60.0 60.0
ok ok ok ok ok ok ok
Tensile stress ss kgf/cm2 115.0 0.0 88.6 37.6 48.4 37.2 48.3
Allowable stress ssa kgf/cm2 1400.0 1400.0 1400.0 1400.0 1400.0 1400.0 1400.0
ok ok ok ok ok ok ok
Shearing stress at joint t kgf/cm2 5.41 0.00 3.41 3.08 0.00 3.93 0.00
Allowable stress ta kgf/cm2 11.00 11.00 11.00 11.00 11.00 11.00 11.00ok ok ok ok ok ok ok
Shearing stress at 2d t2d kgf/cm2 4.01 - 2.98 2.29 - 2.93 -
Allowable stress t2da kgf/cm2 5.50 - 5.50 5.50 - 5.50 -
ok - ok ok - ok -
Resisting Moment Mr kgfcm 206,044 173,378 205,852 205,817 205,817 205,798 213,308
Mr for compression Mrc kgfcm 206,044 173,378 205,852 205,817 205,817 205,798 213,308
x for Mrc cm 6.408 5.258 6.238 5.820 5.820 5.846 6.096 ss for Mrc kgf/cm2 1706.1 2394.3 1791.9 2023.7 2023.7 2008.6 1867.3
Mr for tensile Mrs kgfcm 372,070 204,735 334,555 251,307 251,307 256,073 297,721
x for Mrs cm 8.970 7.358 8.643 7.729 7.729 7.791 8.215 sc for Mrs kgf/cm2 104.0 64.6 94.1 71.9 71.9 73.2 82.8
Distribution bar (>As/6 and >Asmin) 12@250 12@250 12@250 12@250 12@250 12@250 12@250
Reinforcement As cm2 4.52 4.52 4.52 4.52 4.52 4.52 4.52ok ok ok ok ok ok ok
Reinforcement bar for fillet 12@250 12@250
Reinforcement As cm2 4.52 4.52
Minimum requirement of reinforcement bar As min = 4.5 cm2
Side wall Top slab Invert
36/41 (5)168023748.xls.ms_officeR-bar stress
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DATA PLOT PEMBESIAN
1. Design Data
b1 = m b2 = m
h1 = m h2 = m h3 = m d = m
Bb = m Ha = m Fillet = m
2. Data PembesianBottom slab : Tulangan bagi :
As1 (cm ) : O 16 @ O 12 @ O 12 @
As2 (cm ) : O 12 @ O 16 @
Side wall : Tulangan bagi :
As1 (cm ) : O 16 @ O 12 @ O 12 @
As2 (cm ) : O 12 @ O 16 @
Top slab : Tulangan bagi :
As1 (cm ) : O 16 @ O 16 @ O 12 @
As2 (cm ) : O 16 @ O 16 @
3. Tulangan Miring (fillet) :
Bottom slab : O 12 @
Top slab : O 12 @
4. Nama Bangunan : Culvert Type 1 (2 m x 2 m)
Lokasi : . Irrigation Project
250
125 250
Section of Culvert
0.200 2.000
0.200 2.500 0.200 0.06
Tumpuan Lapangan
2.400 2.900 0.20
Tumpuan Lapangan
250 125
Tumpuan Lapangan
250 250 250
250 250
250
250 250
250
250
250 250
b1b1 b2
h3
h2
h1
Bb
Ha
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DATA PLOT MOMENT AND SHEAR FORCE DIAGRAM
1. Design Data
b1 = m b2 = m
h1 = m h2 = m h3 = m
Bb = m Ha = m
2. Result Calculation
Side wall (left)
Case 1Case 2
Side wall (right)
Case 1
Case 2
Top slab
Case 1
Case 2
Bottom slab
Case 1
Case 2
3. Nama Bangunan : Culvert Type 1 (2 m x 2 m)
Lokasi : . Irrigation Project
Case 1MmaxMab =Mcd =
Sb
Section of Culvert
0.200 2.000
0.200 2.500 0.200
Na Nb
2.200 2.700
Ma Mmax Mb Sa
-2.331 1.407 -1.828 6.531 -3.729 5.503 4.303
Nc
-1.282 -0.249 -0.972 1.388 -1.190 5.503 4.303
Mc Mmax Md Sd Sc Nd
-1.828 1.407 -2.331 -6.531 3.729 5.503 4.303
-0.972 -0.249 -1.282 -1.388 1.190 5.503 4.303
3.729
Mb Mmax Mc Sb Sc Nb Nc
-1.828 0.539 -1.828 4.303 -4.303 3.729
-0.972 1.395 -0.972 4.303 -4.303 1.190 1.190
Ma Mmax Md Sa Sd Na Nd
1.388
-2.331 0.696 -2.331 -5.503 5.503 6.531 6.531
-1.282 1.745 -1.282 -5.503 5.503 1.388
x x1 x2 x3 x4 x5 x6 x71.242 -0.48 0.70 1.30 1.38 1.04 0.34 -0.641.458 -0.48 0.70 1.30 1.38 1.04 0.34 -0.64
b1b1 b2
h3
h2
h1
Bb
Ha
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MmaxMbc =Mad =
Ha =
Bb =
Sab
Case 2MmaxMab =Mcd =MmaxMbc =Mad =
Ha =
Bb =
Sab
-0.05 -0.79y1 y2 y3 y4 y5 y6 y7
1.1 -0.79 -0.05 0.39 0.54 0.391.1 -1.01 -0.06 0.51 0.70 0.51 -0.06 -1.01
0.550 0.275
2.700 0.338 0.675 1.013 1.350 1.688 2.025 2.363
2.200 0.275 0.550 0.825 1.100 0.825
-2.53 -3.24x x1 x2 x3 x4 x5 x6 x7
2.700 4.45 2.60 0.98 -0.42 -1.59
-0.63x x1 x2 x3 x4 x5 x6 x7
-0.631.242 -0.87 -0.56 -0.35 -0.26 -0.27 -0.39
y71.458 -0.87 -0.56 -0.35 -0.26 -0.27 -0.39
0.80 0.06y1 y2 y3 y4 y5 y6
1.1 0.06 0.80 1.25 1.39 1.251.1 0.04 0.99 1.56 1.74 1.56 0.99 0.04
0.550 0.275
2.700 0.338 0.675 1.013 1.350 1.688 2.025 2.363
2.200 0.275 0.550 0.825 1.100 0.825
-0.53 -0.86x x1 x2 x3 x4 x5 x6 x7
2.700 1.08 0.76 0.44 0.12 -0.20
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MAB MBA
-1.282 0.972-2.331
MCD
1.828
MDC
-1.828 2.331
MBC MCB
-0.972
-1.828
1.282
1.828
-0.972 0.972
2.331 -2.331
MAD
1.282
MDA
-1.282
q1 q26.500 1.1001.100 6.500
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q1
q1
3.9125.003
q1 q20.920 0.9900.990 0.920
3.9125.003