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Pad Foundation Design to Bs 81101997
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Project Spreadsheets to BS 8110
Client Advisory Group Made by Date Page
Location Level -1 Base B1 RMW 8-Apr-23 113
PAD FOUNDATION DESIGN to BS 8110:1997 Checked Revision Job No
chg - R68
MATERIALS fcu 35 N/mm² h agg 20 mm 1.5 concrete
fy 460 N/mm² cover 50 mm 1.05 steel
Densities - Concrete 23.6 kN/m³ Soil 18 kN/m³
Bearing pressure 200 kN/m² (net allowable increase)
BASE COLUMNL = 3300 h = 1200B = 1800 b = 250
450ex = 0 ey = 0
Key
DEAD IMPOSED WIND
1001.0 128.0-20.0
STATUS Err:520
CORNER 1 2 3 4
no wind 198.7 186.5 198.7 186.5with wind 198.7 186.5 198.7 186.5 Efficiency
REINFORCEMENT Err:520 Err:520
Mxx = 275.0 kNm Myy = 268.0 kNm
b = 1800 mm b = 3300 mm
d = Err:520 mm d = Err:520 mm
As = Err:520 mm² As = Err:520 mm²
PROVIDE Err:520 PROVIDE Err:520As prov = Err:520 mm² As prov = Err:520 mm²
Err:520 Err:520
BEAM SHEAR Err:520 Err:520
Vxx = 329.4 kN at d from col face Vyy = 361.4 kN at d from col face
v = Err:520 N/mm² v = Err:520 N/mm²
or Vxx = 135.2 kN at 2d from col face or Vyy = 31.2 kN at 2d from col face
v = Err:520 N/mm² v = Err:520 N/mm²
vc = Err:520 N/mm² vc = Err:520 N/mm²
PUNCHING SHEAR Err:520 Err:520
d ave = Err:520 mm u crit = Err:520 mm
As prov = Err:520 % v max = Err:520 N/mm² at col face
v = Err:520 N/mm² vc = Err:520 N/mm²
REINFORCED CONCRETE COUNCIL
Single column base
Originated from RCC81.xls on CD © 1999 BCA for RCC
gc
gs
DIMENSIONS mm
depth H =
COLUMN REACTIONS kN, kNm characteristic Plot (to scale)
Axial (kN)
Mx (kNm)
My (kNm) Hx (kN)
Hy (kN)
BEARING PRESSURES kN/m² characteristicpunching
v yy
Shear v xx
(As/Asprov) fsy
Bending fsx
Grnd Brg Pressure
0% 25% 50% 75% 100% 125%
99.4%
Project Spreadsheets to BS 8110 Location Level -1 Base B1 Made by RMW Job No R68
PAD FOUNDATION DESIGN to BS 8110:1997 Single column base Date 8-Jan-99Originated from RCC81.xls on CD © 1999 BCA for RCC sheet 1 of 3
CALCULATIONS - SINGLE BASE
Gross base wt 63.08 L= 3.3 B= 1.8
CHARACTERISTIC PRESSURESG + Q G + Q + W G + W
P kN 1192.08 1192.08 OK 1064.08 Text Asx increased Mx kNm -20.00 -20.00 -20.00 Asy increased My kNm 0.00 0.00 0.00ex m -0.017 -0.017 -0.019 FS o'turn 87.78683ey m 0.000 0.000 0.000 FS o'turn 100 0
6ex/L -0.0305 -0.0305 -0.0342if ex>L/6 1.3470 1.3470 1.3487 Rebar ares Area Dia
k 2-4 0.9695 0.9695 0.9658 50.3 8k 1-3 1.0305 1.0305 1.0342 78.5 10
6ey/B 0.0000 0.0000 0.0000 113.1 12if ey>B/6 1.3333 1.3333 1.3333 201.1 16
k 1-2 1.0000 1.0000 1.0000 314.2 20k 3-4 1.0000 1.0000 1.0000 490.9 25
P/A kN/m² 200.69 200.69 179.14 804.2 32corner 1 kN/m² 206.81 206.81 185.26 Gross 1256.6 40corner 2 kN/m² 194.57 194.57 173.02 Grosscorner 3 kN/m² 206.81 206.81 185.26 Grosscorner 4 kN/m² 194.57 194.57 173.02 Gross
ULTIMATE PRESSURES1.4G+1.6Q 1.2(G+Q+W) 1.0G+1.4W
N kN 1694.52 1430.50 OK 1089.32Mx kNm -28.00 -24.00 -20.00My kNm 0.00 0.00 0.00ex m -0.017 -0.017 -0.018 FS o'turn 89.86856ey m 0.000 0.000 0.000 FS o'turn 100 0
6ex/L -0.0300 -0.0305 -0.0334if ex>L/6 1.3468 1.3470 1.3483
k 2-4 0.9700 0.9695 0.9666k 1-3 1.0300 1.0305 1.0334
6ey/B 0.0000 0.0000 0.0000if ey>B/6 1.3333 1.3333 1.3333
k 1-2 1.0000 1.0000 1.0000k 3-4 1.0000 1.0000 1.0000
N/L kN/m 513.49 433.48 330.10edge 2-4 kN/m 498.06 420.26 319.08edge 1-3 kN/m 528.92 446.71 341.12
N/B kN/m 941.40 794.72 605.18edge 1-2 kN/m 941.40 794.72 605.18edge 3-4 kN/m 941.40 794.72 605.183(L/2-ex) m 4.900 4.900 4.8953(B/2-ey) m 2.700 2.700 2.700
XX MOMENTS 1.4G+1.6Q 1.2(G+Q+W) 1.0G+1.4W
LEFT RIGHT LEFT RIGHT LEFT RIGHT
from right m 2.250 1.050 3.11.2.2
from left m 1.050 2.250 3.11.2.2
to zero press m 3.850 3.850 3.850 3.850 3.845 3.845local press kN/m 519.10 507.88 438.29 428.68 334.10 326.09
M1 kNm 289.8 276.4 244.7 233.2 186.8 177.2M2 kNm 1282.7 1255.0 1082.6 1058.8 823.2 803.5
choose M kNm 275.0 261.6 232.1 220.6 176.2 166.6Design Mxx kNm 275.0
XX SHEARS @ d from col facefrom right m 2.640 0.660 3.4.5.10
from left m 0.660 2.640 3.4.5.8
to zero press m 2.260 4.240 2.260 4.240 2.255 4.235local press kN/m 522.75 504.23 441.42 425.55 336.71 323.48
V1 kN 347.0 330.8 293.1 279.1 223.7 212.0V2 kN 1108.3 1069.1 935.7 902.1 713.0 685.0
choose V kN 329.4 313.1 277.9 264.0 211.1 199.4Design Vxx kN 329.4
@ 2d from col facefrom right m 3.030 0.270 3.4.5.10
from left m 0.270 3.030 3.4.5.8
to zero press m 1.870 4.630 1.870 4.630 1.865 4.625local press kN/m 526.39 500.59 444.54 422.43 339.31 320.88
V1 kN 142.5 134.8 120.3 113.8 91.9 86.4V2 kN 1218.7 1159.0 1029.0 977.8 784.6 742.0
choose V kN 135.2 127.6 114.1 107.6 86.7 81.2
Project Spreadsheets to BS 8110 Location Level -1 Base B1 Made by RMW Job No R68
PAD FOUNDATION DESIGN to BS 8110:1997 Single column base Date 8-Jan-99Originated from RCC81.xls on CD © 1999 BCA for RCC sheet 2 of 3
YY MOMENTSfrom top m 1.025 0.775 3.11.2.2
from btm m 0.775 1.025 3.11.2.2
to zero press m 1.925 1.925 1.925 1.925 1.925 1.925local press kN/m 941.40 941.40 794.72 794.72 605.18 605.18
M1 kNm 282.7 282.7 238.7 238.7 181.7 181.7M2 kNm 581.4 581.4 490.8 490.8 373.8 373.8
choose M kNm 268.0 268.0 226.0 226.0 171.2 171.2Design Myy kNm 268.0
YY SHEARS @ d from col facefrom top m 1.395 0.405 3.4.5.10
from btm m 0.405 1.395 3.4.5.8
to zero press m 2.295 2.295 2.295 2.295 2.295 2.295local press kN/m 941.40 941.40 794.72 794.72 605.18 605.18
V1 kN 381.3 381.3 321.9 321.9 245.1 245.1V2 kN 1080.3 1080.3 911.9 911.9 694.4 694.4
choose V kN 361.4 361.4 304.8 304.8 230.9 230.9Design Vyy kN 361.4
@ 2d from col facefrom top m 1.765 0.035 3.4.5.10
from btm m 0.035 1.765 3.4.5.8
to zero press m 2.665 2.665 2.665 2.665 2.665 2.665local press kN/m 941.40 941.40 794.72 794.72 605.18 605.18
V1 kN 32.9 32.9 27.8 27.8 21.2 21.2V2 kN 1254.4 1254.4 1059.0 1059.0 806.4 806.4
choose V kN 31.2 31.2 26.3 26.3 20.0 20.0Design Vyy kN 31.2
REINFORCEMENT min As 0.13%X-X Y-Y
b mm 1800 choose dia 3300 choose dia
dia mm Err:520 20 Err:520 20
d mm Err:520 390 Err:520 370
K' 0.1558 0.1558K Err:520 0.0287 Err:520 0.0169
z mm Err:520 Err:520 Err:520 Err:520 PunchingAs mm² Err:520 Err:520 Err:520 Err:520 0.00054 Err:520
As shear mm² Err:520 Err:520 Err:520 Err:520 As X Err:520 Err:520
required mm² Err:520 Err:520 Err:520 Err:520 As Y Err:520 Err:520
No Err:520 6.17 Err:520 Err:520 Err:520 Err:520
ave centres mm Err:520 325 Err:520 325 As X Err:520 Err:520
As prov mm² Err:520 Err:520 As Y Err:520 Err:520
= % Err:520 Err:520Lc mm 900 1650
Lc max mm Err:520 Err:520 Err:520 Err:520b central mm Err:520 Err:520
Final centres mm Err:520 Err:520
BEAM SHEARv @ d N/mm² Err:520 0.4692 Err:520 0.2960
v @ 2d N/mm² Err:520 0.1927 Err:520 0.0256
vc N/mm² Err:520 Err:520 Err:520 Err:520
As enhanced % Err:520 Err:520 Err:520 Err:520
PUNCHING SHEARd ave mm Err:520 .5 x d ave Err:520 380
L R B T 570
to edges mm 1650 1650 900 900 Err:520to 1.5d per mm Err:520 Err:520 Err:520 Err:520 Err:520
standard perimeter? Y,N Err:520 Err:520 Err:520 Err:520 Err:520 1170 1170
U mm Err:520 Err:520 Err:520 Err:520 695
within base? Y,N Err:520 Err:520 Err:520 Err:520 Err:520 Err:520 1 1 1
perimeter falls Err:520U crit mm Err:520 7460
Area m² Err:520 3.253
As prov % Err:520vc N/mm² Err:520
1.4G+1.6Q 1.2(G+Q+W) 1.0G+1.4W
N kN 1694.5 1430.5 1089.3v max N/mm² Err:520 Err:520 Err:520 Err:520 Err:520 Err:520 2 1 1
ave press kN/m² 285.27 240.82 183.39V kN Err:520 Err:520 Err:520 766.6 647.2 492.8
v N/mm² Err:520 Err:520 Err:520 Err:520 Err:520 Err:520 0.2704 0.2283 0.1739
ave r
ave r
Project Spreadsheets to BS 8110 Location Level -1 Base B1 Made by RMW Job No R68
PAD FOUNDATION DESIGN to BS 8110:1997 Single column base Date 8-Jan-99Originated from RCC81.xls on CD © 1999 BCA for RCC sheet 3 of 3
SIZING TIPS Net press = 197.5
G + Q G + Q + W G + W
N kN 1129.0 1129.0 1001.0Mx kNm -20.0 -20.0 -20.0My kNm 0.0 0.0 0.0ex m -18 -18 -20ey m 0 0 0
min A m² 5.72 4.57 4.06min L mm 1200min B mm 250
sq base iteration 0 2.391 2.391 2.2510 0 0
-120 -120 -120sq base iteration 1 4.782 4.782 4.503
16197 16197 1352216077 16077 13402
sq base iteration 2 2.438 2.438 2.303110 110 106-10 -10 -14
sq base iteration 3 2.442 2.442 2.308118 118 118-2 -2 -2
SQUARE SIZE L & B mm 2442 2442 2309 2445 SQif L = 3300
331 331 292B mm 1677 1341 1184 or 3300 x 1680
if B = 1800627 627 556
L mm 3066 2430 2126 or 3070 x 1800
Project Spreadsheets to BS 8110
Client Advisory Group Made by Date Page
Location Base B3/B4 Combined base RMW 8-Apr-23 114
PAD FOUNDATION DESIGN to BS 8110:1997 Checked Revision Job No
Originated from RCC81.xls on CD © 1999 BCA for RCC chg - R68
MATERIALS fcu 35 N/mm² h agg 20 mm 1.5 steel
fy 460 N/mm² cover 50 mm 1.05 concrete
Densities - Concrete 23.6 kN/m³ Soil 18 kN/m³
Bearing pressure 125 kN/m² (net allowable)
DEAD IMPOSED WIND DEAD IMPOSED WIND
Axial 225.0 225.0 112.5 Axial 225.0 225.0 112.5Mx MxMy My 50.0Hx HxHy Hy 25.0
BASE
L = 3000 h1 = 300 h2 = 300B = 3000 b1 = 300 b2 = 300
750300 ex1 = 150 ex2 = 1501000 ey1 = 500 ey2 = 500
STATUS Err:520
CORNER 1 2 3 4
no wind 104.2 104.2 104.2 104.2with wind 144.5 144.5 113.9 113.9
REINFORCEMENT405.0 kNm Myy - 251.7
b = 3000 mm b = 3000d = Err:520 mm d = Err:520
As = Err:520 mm² As = Err:520
Err:520 Err:520 Efficiency'
As prov = Err:520 mm² As prov = Err:520Err:520 Err:520
0.0 kNm Myy + Err:520d = Err:520 mm d = Err:520
As = Err:520 mm² As = Err:520
Err:520 Err:520As prov = Err:520 mm² As prov = Err:520
Err:520 Err:520
BEAM SHEAR Err:520 Err:520 Mx Diagram
Vxx = Err:520 kN at d Vyy = Err:520v = Err:520 N/mm² v = Err:520
or Vxx = Err:520 kN at 2d or Vyy = Err:520v = Err:520 N/mm² v = Err:520
vc = Err:520 N/mm² vc = Err:520
PUNCHING SHEAR Err:520 Err:520
d ave = Err:520 mm u crit = Err:520 mm
REINFORCED CONCRETE COUNCIL
gc
gs
COLUMN REACTIONS kN, kNm characteristic
Column 1 (rhs) Column 2 (lhs)
DIMENSIONS mmCOLUMN 1 (rhs) COLUMN 2 (lhs)
depth H =Sex =Sey =
PLOT (to scale)
BEARING PRESSURES kN/m² characteristic
Btm Mxx -
Top Mxx +
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
-450-400-350-300-250-200-150-100-50
0
Moment Columns Zero axis
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
-250
-200
-150
-100
-50
0
punching
v yy
Shear v xx
(As/Asprov) fsy
Bending fsx
Grnd Brg Pressure
0% 133%
92.5%
document.xls 06:29:51 04/08/2023 10
Project Spreadsheets to BS 8110 Location Base B3/B4 Made by RMW Job No R68
PAD FOUNDATION DESIGN to BS 8110:1997 Combined base Date 8-Apr-23Originated from RCC81.xls on CD © 1999 BCA for RCC sheet 1 of 5
CALCULATIONS - DOUBLE BASE
Gross base wt 159.30 L= 3.00 B= 3.00
CHARACTERISTIC PRESSURESG + Q G + Q + W G + W
N1 kN 450.0 562.5 337.5 Dims clear x
N2 kN 450.0 562.5 337.5 clear y
Total N kN 1059.3 1284.3 OK 834.3Mx1 kNm 67.5 84.4 50.6 Rebar areas AreaMx2 kNm -67.5 -84.4 -50.6 50.3
Total Mx kNm 0.0 0.0 0.0 78.5ex m 0.000 0.000 0.000 FS o'turn 100 113.1
My1 kNm 225.0 281.3 168.8 201.1My2 kNm -225.0 -212.5 -100.0 314.2
Total My kNm 0.0 68.8 68.8 490.9ey m 0.000 0.054 0.082 FS o'turn 18.20291 0 804.2
6ex/L 0.0000 0.0000 0.0000 1256.6if ex>L/6 1.3333 1.3333 1.3333
k 2-4 1.0000 1.0000 1.0000 Suggested values for 'e'k 1-3 1.0000 1.0000 1.0000 N = 900.0
6ey/B 0.0000 0.1071 0.1648 Mx = 0 My =if ey>B/6 1.3333 1.3827 1.4108 ex' = 0 ey' =
k 1-2 1.0000 1.1071 1.1648 300k 3-4 1.0000 0.8929 0.8352 ex1 ex2 ey1
N/A kN/m² 117.70 142.70 92.70 150 150 500corner 1 kN/m² 117.70 157.98 107.98 Grosscorner 2 kN/m² 117.70 157.98 107.98 Grosscorner 3 kN/m² 117.70 127.42 77.42 Gross Text Asx increased corner 4 kN/m² 117.70 127.42 77.42 Gross Asy increased
ULTIMATE PRESSURES1.4G+1.6Q 1.2(G+Q+W) 1.0G+1.4W
N1 kN 675.0 675.0 382.5N2 kN 675.0 675.0 382.5
Total N kN 1573.0 1541.2 OK 924.3Mx1 kNm 0.0 0.0 0.0Mx2 kNm 0.0 0.0 0.0
kNm 0.0 0.0 0.0My1 kNm 0.0 0.0 0.0My2 kNm 0.0 82.5 96.3
kNm 0.0 82.5 96.3ex m 0.000 0.000 0.000 FS o'turn 100ey m 0.000 0.054 0.104 FS o'turn 14.40468 0
6ex/L 0.0000 0.0000 0.0000if ex>L/6 1.3333 1.3333 1.3333
k 2-4 1.0000 1.0000 1.0000k 1-3 1.0000 1.0000 1.0000
6ey/B 0.0000 0.1071 0.2083if ey>B/6 1.3333 1.3827 1.4328
k 1-2 1.0000 1.1071 1.2083k 3-4 1.0000 0.8929 0.7917
N/L kN/m 524.34 513.72 308.10edge 2-4 kN/m 524.34 513.72 308.10edge 1-3 kN/m 524.34 513.72 308.10
N/B kN/m 524.34 513.72 308.10edge 1-2 kN/m 524.34 568.72 372.27edge 3-4 kN/m 524.34 458.72 243.933(L/2-ex) m 4.500 4.500 4.5003(B/2-ey) m 4.500 4.339 4.188
XX MOMENTS 1.4G+1.6Q 1.2(G+Q+W) 1.0G+1.4W
Column 1 LEFT RIGHT LEFT RIGHT LEFT RIGHT
from right m 1.500 1.200 3.11.2.2
from left m 1.500 1.800 3.11.2.2
to zero press m 3.000 3.300 3.000 3.300 3.000 3.300local press kN/m 524.34 524.34 513.72 513.72 308.10 308.10
M1 kNm 589.9 377.5 577.9 369.9 346.6 221.8M2 kNm 0.0 -471.9 0.0 -462.3 0.0 -277.3
add kNm -101.3 -101.3 -57.4choose M kNm 405.0 324.0 405.0 324.0 229.5 183.6
Column 2from right m 1.800 1.500 3.11.2.2
from left m 1.200 1.500 3.11.2.2
to zero press m 3.300 3.000 3.300 3.000 3.300 3.000local press kN/m 524.34 524.34 513.72 513.72 308.10 308.10
M1 kNm 377.5 589.9 369.9 577.9 221.8 346.6
Sex = Sey =
SMx
SMy
document.xls 06:29:51 04/08/2023 11
M2 kNm -471.9 0.0 -462.3 0.0 -277.3 0.0add kNm -101.3 -101.3 -57.4
choose M kNm 324.0 405.0 324.0 405.0 183.6 229.5Design Mxx+ kNm 405.0
document.xls 06:29:51 04/08/2023 12
BETWEENclear span m 0.000
End V kN 0.0 0.0 0.0 0.0 0.0 0.0local press kN/m Err:520 Err:520 Err:520 Err:520 Err:520 Err:520
quad a Err:520 Err:520 Err:520 Project Spreadsheets to BS 8110if ex<=L/6 m Err:520 Err:520 Err:520 Location Base B3/B4
quad a Err:520 Err:520 Err:520 Err:520 Err:520 Err:520 PAD FOUNDATION DESIGN to BS 8110:1997 Combined baseotherwise m 0.000 Err:520 0.000 Err:520 0.000 Err:520 Originated from RCC81.xls on CD
choose X bar m Err:520 Err:520 Err:520 Made by RMW Job No R68
from left/right m Err:520 Err:520 Err:520 Err:520 Err:520 Err:520 Date 8-Apr-23
local press kN/m Err:520 Err:520 Err:520M1 kNm Err:520 Err:520 Err:520M2 kNm Err:520 Err:520 Err:520
choose M kNm 0.0 0.0 0.0Design Mxx- kNm 0.0
XX SHEARS 1.4G+1.6Q 1.2(G+Q+W) 1.0G+1.4W
Column 1 @ d LEFT RIGHT LEFT RIGHT LEFT RIGHT
from right m Err:520 Err:520 3.4.5.10
from left m Err:520 Err:520 3.4.5.8
to zero press m Err:520 Err:520 Err:520 Err:520 Err:520 Err:520local press kN/m Err:520 Err:520 Err:520 Err:520 Err:520 Err:520
V1 kN Err:520 Err:520 Err:520 Err:520 Err:520 Err:520V2 kN 1573.0 1573.0 1541.2 1541.2 924.3 924.3
add kN -675.0 -675.0 -382.5choose V kN 0.0 Err:520 0.0 Err:520 0.0 Err:520
@ 2d from col facefrom right m Err:520 Err:520 3.4.5.10
from left m Err:520 Err:520 3.4.5.8
to zero press m Err:520 Err:520 Err:520 Err:520 Err:520 Err:520local press kN/m Err:520 Err:520 Err:520 Err:520 Err:520 Err:520
V1 kN Err:520 Err:520 Err:520 Err:520 Err:520 Err:520V2 kN 1573.0 1573.0 1541.2 1541.2 924.3 924.3
add kN -675.0 -675.0 -382.5choose V kN 0.0 Err:520 0.0 Err:520 0.0 Err:520Column 2 @ d from col facefrom right m Err:520 Err:520 3.4.5.10
from left m Err:520 Err:520 3.4.5.8
to zero press m Err:520 Err:520 Err:520 Err:520 Err:520 Err:520local press kN/m Err:520 Err:520 Err:520 Err:520 Err:520 Err:520
V1 kN Err:520 Err:520 Err:520 Err:520 Err:520 Err:520V2 kN 1573.0 1573.0 1541.2 1541.2 924.3 924.3
add kN -675.0 -675.0 -382.5choose V kN Err:520 0.0 Err:520 0.0 Err:520 0.0
Design Vxx (d) kN Err:520@ 2d from col face
from right m Err:520 Err:520 3.4.5.10
from left m Err:520 Err:520 3.4.5.8
to zero press m Err:520 Err:520 Err:520 Err:520 Err:520 Err:520local press kN/m Err:520 Err:520 Err:520 Err:520 Err:520 Err:520
V1 kN Err:520 Err:520 Err:520 Err:520 Err:520 Err:520V2 kN 1573.0 1573.0 1541.2 1541.2 924.3 924.3
add kN -675.0 -675.0 -382.5choose V kN Err:520 0.0 Err:520 0.0 Err:520 0.0
Design Vxx (2d) kN Err:520
YY MOMENTS 1.4G+1.6Q 1.2(G+Q+W) 1.0G+1.4W
Column 1 LEFT RIGHT LEFT RIGHT LEFT RIGHT
from top m 1.150 0.850 3.11.2.2
from btm m 1.850 2.150 3.11.2.2
to zero press m 2.650 3.650 2.489 3.489 2.338 3.338local press kN/m 524.34 524.34 526.55 537.55 323.07 335.91
M1 kNm 897.3 189.4 823.7 201.7 462.6 130.1M2 kNm 550.6 -1022.5 823.7 -919.3 462.6 -504.5
add kNm -573.8 -491.3 -228.9choose M kNm 196.3 162.6 223.4 178.7 142.8 110.9
Column 2from top m 2.150 1.850 3.11.2.2
from btm m 0.850 1.150 3.11.2.2
to zero press m 3.650 2.650 3.489 2.489 3.338 2.338local press kN/m 524.34 524.34 489.89 500.89 280.29 293.13
M1 kNm 189.4 897.3 169.5 934.5 92.5 591.9M2 kNm -1022.5 550.6 169.5 621.9 92.5 419.8
add kNm -573.8 -573.8 -325.1choose M kNm 162.6 196.3 146.4 251.7 73.3 175.9
Design Mxx+ kNm 251.7
document.xls 06:29:51 04/08/2023 13
BETWEENclear span m 0.700
End V kN Err:520 Err:520 Err:520 Err:520 Err:520 Err:520 Spreadsheets to BS 8110
local press kN/m Err:520 Err:520 Err:520 Err:520 Err:520 Err:520 Base B3/B4
quad a Err:520 Err:520 Err:520 PAD FOUNDATION DESIGN to BS 8110:1997 Combined base
if ex<=L/6 m Err:520 Err:520 Err:520 Originated from RCC81.xls on CD © 1999 BCA for RCC
quad a Err:520 Err:520 Err:520 Err:520 Err:520 Err:520otherwise m 0.000 Err:520 0.000 Err:520 0.000 Err:520 Made by RMW Job No R68
choose X bar m Err:520 Err:520 Err:520 Date 8-Apr-23
from left/right m Err:520 Err:520 Err:520 Err:520 Err:520 Err:520local press kN/m Err:520 Err:520 Err:520
M1 kNm Err:520 Err:520 Err:520M2 kNm Err:520 Err:520 Err:520
choose M kNm Err:520 Err:520 Err:520Design Myy- kNm Err:520
YY SHEARS 1.4G+1.6Q 1.2(G+Q+W) 1.0G+1.4W
Column 1 @ d LEFT RIGHT LEFT RIGHT LEFT RIGHT
from top m Err:520 Err:520 3.4.5.10
from btm m Err:520 Err:520 3.4.5.8
to zero press m Err:520 Err:520 Err:520 Err:520 Err:520 Err:520local press kN/m Err:520 Err:520 Err:520 Err:520 Err:520 Err:520
V1 kN Err:520 Err:520 Err:520 Err:520 Err:520 Err:520V2 kN 1573.0 1573.0 Err:520 1541.2 Err:520 924.3
add kN -675.0 -675.0 -382.5choose V kN Err:520 Err:520 Err:520 Err:520 Err:520 Err:520
@ 2d from col facefrom top m Err:520 Err:520 3.4.5.10
from btm m Err:520 Err:520 3.4.5.8
to zero press m Err:520 Err:520 Err:520 Err:520 Err:520 Err:520local press kN/m Err:520 Err:520 Err:520 Err:520 Err:520 Err:520
V1 kN Err:520 Err:520 Err:520 Err:520 Err:520 Err:520V2 kN 1573.0 1573.0 Err:520 1541.2 Err:520 924.3
add kN -675.0 -675.0 -382.5choose V kN Err:520 Err:520 Err:520 Err:520 Err:520 Err:520Column 2 @ d from col facefrom right m Err:520 Err:520 3.4.5.10
from left m Err:520 Err:520 3.4.5.8
to zero press m Err:520 Err:520 Err:520 Err:520 Err:520 Err:520local press kN/m Err:520 Err:520 Err:520 Err:520 Err:520 Err:520
V1 kN Err:520 Err:520 Err:520 Err:520 Err:520 Err:520V2 kN 1573.0 1573.0 Err:520 1541.2 Err:520 924.3
add kN -675.0 -675.0 -382.5choose V kN Err:520 Err:520 Err:520 Err:520 Err:520 Err:520
Design Vyy (d) kN Err:520@ 2d from col face
from right m Err:520 Err:520from left m Err:520 Err:520
to zero press m Err:520 Err:520 Err:520 Err:520 Err:520 Err:520local press kN/m Err:520 Err:520 Err:520 Err:520 Err:520 Err:520
V1 kN Err:520 Err:520 Err:520 Err:520 Err:520 Err:520V2 kN 1573.0 1573.0 Err:520 1541.2 Err:520 924.3
add kN -675.0 -675.0 -382.5choose V kN Err:520 Err:520 Err:520 Err:520 Err:520 Err:520
Design Vyy (2d) kN Err:520
REINFORCEMENT min As 0.13%Bottom steel X-X Y-Y
b mm 3000 choose dia 3000 choose dia Err:520
dia mm Err:520 20 Err:520 20
d mm Err:520 690 Err:520 Err:520
K' 0.1558 0.1558K Err:520 0.0081 Err:520 Err:520 X-X Y-Y
z mm Err:520 Err:520 Err:520 Err:520 Min 0.13%bd Err:520 Err:520
As mm² Err:520 Err:520 Err:520 Err:520 As as as % Err:520 Err:520
As shear mm² Err:520 Err:520 Err:520 Err:520
required mm² Err:520 Err:520 Err:520 Err:520
No Err:520 9.86 Err:520 Err:520
ave centres mm Err:520 325 Err:520 Err:520
As prov mm² Err:520 Err:520= % Err:520 Err:520 Err:520 Err:520 Err:520 Err:520
Lc mm 1000 1350 3.11.1
Lc max mm Err:520 Err:520 Err:520 Err:520 3.11.3.2
b central mm Err:520 Err:520Final centres mm Err:520 Err:520
document.xls 06:29:51 04/08/2023 14
Top steel X-X Y-Y
b mm 3000 choose dia 3000 choose dia
dia mm Err:520 20 Err:520 20 Spreadsheets to BS 8110
d mm Err:520 690 Err:520 Err:520 Base B3/B4
K' 0.1558 0.1558 PAD FOUNDATION DESIGN to BS 8110:1997 Combined base
K Err:520 0.0000 Err:520 Err:520 Originated from RCC81.xls on CD © 1999 BCA for RCC
z mm Err:520 Err:520 Err:520 Err:520 Made by RMW Job No R68
As mm² Err:520 Err:520 Err:520 Err:520 Date 8-Apr-23
As shear mm² Err:520 Err:520required mm² Err:520 Err:520 Err:520 Err:520 Err:520 Err:520
No Err:520 9.86 Err:520 Err:520 Err:520 Err:520
ave centres mm Err:520 325 Err:520 Err:520 Err:520 Err:520
As prov mm² Err:520 Err:520= % Err:520 Err:520 Err:520 Err:520 Err:520 Err:520
Lc mm 1000 1350 3.11.1
Lc max mm Err:520 Err:520 Err:520 Err:520 3.11.3.2
b central mm Err:520 Err:520Final centres mm Err:520 Err:520
BEAM SHEARv @ d N/mm² Err:520 Err:520 Err:520 Err:520
v @ 2d N/mm² Err:520 Err:520 Err:520 Err:520
vc N/mm² Err:520 Err:520 Err:520 Err:520
As enhanced % Err:520 Err:520 Err:520 Err:520 Err:520
PUNCHING SHEAR Err:520
d ave mm Err:520 .5 x d ave Err:520As prov % Err:520
vc N/mm² Err:520COLUMN 1 L R B T
to edges mm 1650 1350 2000 1000 Err:520to 1.5d per mm Err:520 Err:520 Err:520 Err:520 Err:520
standard perimeter? Y,N Err:520 Err:520 Err:520 Err:520 Err:520U mm Err:520 Err:520 Err:520 Err:520
within base? Y,N Err:520 Err:520 Err:520 Err:520 Err:520 Err:520perimeter falls Err:520
U crit mm Err:520Area m² Err:520
1.4G+1.6Q 1.2(G+Q+W) 1.0G+1.4W
N kN 675.0 675.0 382.5v max N/mm² Err:520 Err:520 Err:520 Err:520 Err:520 Err:520
ave press kN/m² 174.78 174.30 106.26V kN Err:520 Err:520 Err:520v N/mm² Err:520 Err:520 Err:520 Err:520 Err:520 Err:520 Err:520
COLUMN 2 L R B T
to edges mm 1350 1650 1000 2000 Err:520to 1.5d per mm Err:520 Err:520 Err:520 Err:520 Err:520
standard perimeter? Y,N Err:520 Err:520 Err:520 Err:520 Err:520U mm Err:520 Err:520 Err:520 Err:520
within base? Y,N Err:520 Err:520 Err:520 Err:520 Err:520 Err:520perimeter falls Err:520
U crit mm Err:520Area m² Err:520
1.4G+1.6Q 1.2(G+Q+W) 1.0G+1.4W
N kN 675.0 675.0 382.5v max N/mm² Err:520 Err:520 Err:520 Err:520 Err:520 Err:520
ave press kN/m² 174.78 168.18 99.14V kN Err:520 Err:520 Err:520v N/mm² Err:520 Err:520 Err:520 Err:520 Err:520 Err:520 Err:520
COMBINED L R B T
to edges mm 1350 1350 1000 1000 Err:520to 1.5d per mm Err:520 Err:520 Err:520 Err:520 Err:520
standard perimeter? Y,N Err:520 Err:520 Err:520 Err:520 Err:520U mm Err:520 Err:520 Err:520 Err:520
within base? Y,N Err:520 Err:520 Err:520 Err:520 Err:520 Err:520perimeter falls Err:520
U crit mm Err:520Area m² Err:520
1.4G+1.6Q 1.2(G+Q+W) 1.0G+1.4W
N kN 1573.0 1541.2 924.3ave press kN/m² 174.78 171.24 102.70
V kN Err:520 Err:520 Err:520v N/mm² Err:520 Err:520 Err:520 Err:520 Err:520 Err:520 Err:520
document.xls 06:29:51 04/08/2023 15
SIZING TIPS Net press = 120.8G + Q G + Q + W G + W
N kN 900.0 1125.0 675.0Mx kNm 0.0 0.0 0.0 Spreadsheets to BS 8110
My kNm 0.0 68.8 68.8 Base B3/B4
ex m 0 0 0 PAD FOUNDATION DESIGN to BS 8110:1997 Combined base
ey m 0 61 102 Originated from RCC81.xls on CD © 1999 BCA for RCC
min A m² 7.45 7.45 4.47min L mm 600 Made by RMW Job No R68
1500 1875 1125 Date 8-Apr-23
12417 12774 8018min B mm 1300
692 1109 7635731 7347 5055
MINIMUM SIZE L mm 5731 7347 5055B mm 1300 1300 1300 5735 x 1300
if L = 3000300 375 225
B mm 2483 2808 1956 3000 x 2810if B = 3000
300 421 271L mm 2483 2787 1794 2790 x 3000
document.xls 06:29:51 04/08/2023 16
0700
Dia8
10121620253240
Suggested values for 'e'
001000
ey2500
Asx increased Asy increased
document.xls 06:29:51 04/08/2023 17
PAD FOUNDATION DESIGN to BS 8110:1997 Combined base
Originated from RCC81.xls on CD sheet 2 of 5
document.xls 06:29:51 04/08/2023 18
PAD FOUNDATION DESIGN to BS 8110:1997 Combined base
Originated from RCC81.xls on CD © 1999 BCA for RCC
sheet 3 of 5
for punching
document.xls 06:29:51 04/08/2023 19
PAD FOUNDATION DESIGN to BS 8110:1997 Combined base
Originated from RCC81.xls on CD © 1999 BCA for RCC
sheet 4 of 5+M138
for punching
document.xls 06:29:51 04/08/2023 20
PAD FOUNDATION DESIGN to BS 8110:1997 Combined base
Originated from RCC81.xls on CD © 1999 BCA for RCC
sheet 5 of 5+M237
document.xls 06:29:51 04/08/2023 21
Project Spreadsheets to BS 8110 Location Base B3/B4 AND Level -1 Base B1 Made by RMW Job No R68
PAD FOUNDATION DESIGN to BS 8110:1997 Date 8-Apr-23Originated from RCC81.xls on CD © 1999 BCA for RCC sheet 1 of 2
For Graphs
SINGLE PAD USAGE DOUBLE PAD USAGE
punching Err:520 punching Err:520v yy Err:520 v yy Err:520
Err:520 Err:520Err:520 Err:520Err:520 Err:520
Grnd Brg Pressure 99.4% Grnd Brg Pressure 92.5%
Mx DIAGRAM 74.3 diff 0.0 length 3.000 1.4 diff col MLeft 2L c/l 2R 0.000 0.0
distance 0.000 0.120 0.240 0.360 0.480 0.600 0.720 0.840 0.960 1.080 1.200 1.350 1.500 1.500 1.500 1.500pressure 524.3 524.3 524.3 524.3 524.3 524.3 524.3 524.3 524.3 524.3 524.3 524.3 524.3press M 0.0 3.2 13.0 29.2 51.8 81.0 116.6 158.8 207.4 262.4 506.3 506.3 506.3Col M 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 101.2 101.2 101.2
M 0.0 -3.2 -13.0 -29.2 -51.8 -81.0 -116.6 -158.8 -207.4 -262.4 -324.0 -364.5 -405.0 -405.0 -405.0 -405.0Base 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
1.2 1.2 1.5 1.5 1.5 1.5 1.8 1.80.0 -405.0 0.0 -405.0 0.0 -405.0 0.0 -405.0
My DIAGRAM 74.3 diff 0.0 length 3.000 1.0 diff col MLeft 2L c/l 2R 0.070 0.0
distance 0.000 0.085 0.170 0.255 0.340 0.425 0.510 0.595 0.680 0.765 0.850 1.000 1.150 1.220 1.290 1.360pressure 524.3 524.3 524.3 524.3 524.3 524.3 524.3 524.3 524.3 524.3 524.3 524.3 524.3press M 0.0 1.6 6.5 14.6 26.0 40.6 58.5 79.7 104.0 131.7 334.9 374.4 416.2Col M 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 148.5 195.8 243.0
M 0.0 -1.6 -6.5 -14.6 -26.0 -40.6 -58.5 -79.7 -104.0 -131.7 -162.6 -179.4 -196.3 -186.4 -178.7 -173.20.9 0.9 1.2 1.2 1.9 1.9 2.2 2.20.0 -196.3 0.0 -196.3 0.0 -196.3 0.0 -196.3
Shear v xx Shear v xx
(As/Asprov) fsy (As/Asprov) fsy
Bending fsx Bending fsx
document.xls 06:29:51 04/08/2023 22
Project Spreadsheets to BS 8110 Location Base B3/B4 AND Level -1 Base B1 Made by RMW Job No R68
PAD FOUNDATION DESIGN to BS 8110:1997 Date 8-Apr-23Originated from RCC81.xls on CD © 1999 BCA for RCC sheet 2 of 2
For Graphs
2L c/l 2R 1L 1R1.200 1.350 1.500 1.500 1.800 1.7 diff col M-324.0 -364.5 -405.0 -405.0 -324.0 1L 1R 0.120 0.0 Right
1.500 1.500 1.500 1.500 1.500 1.500 1.500 1.800 1.920 2.040 2.160 2.280 2.400 2.520 2.640 2.760 2.880 3.000524.3 524.3 524.3 524.3 524.3 524.3 524.3 524.3 524.3 524.3 524.3 524.3 524.3 524.3 524.3 524.3506.3 506.3 506.3 506.3 506.3 506.3 829.4 936.4 1049.8 1169.6 1296.0 1428.8 1568.2 1714.0 1866.2 0.0101.2 101.2 101.2 101.2 101.2 101.2 567.0 729.0 891.0 1053.0 1215.0 1377.0 1539.0 1701.0 1863.0 0.0-405.0 -405.0 -405.0 -405.0 -405.0 -405.0 -405.0 -324.0 -262.4 -207.4 -158.8 -116.6 -81.0 -51.8 -29.2 -13.0 -3.2 0.0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
2L c/l 2R 1L 1R0.850 1.000 1.150 1.850 2.150 2.0 diff col M-162.6 -179.4 -196.3 -196.3 -162.6 1L 1R 0.085 0.0 Right
1.430 1.500 1.570 1.640 1.710 1.780 1.850 2.150 2.235 2.320 2.405 2.490 2.575 2.660 2.745 2.830 2.915 3.000524.3 524.3 524.3 524.3 524.3 524.3 524.3 524.3 524.3 524.3 524.3 524.3 524.3 524.3 524.3 524.3460.1 506.3 554.6 605.2 657.9 712.9 1123.9 1211.0 1301.4 1395.0 1491.9 1592.0 1695.4 1802.0 1911.9 0.0290.3 337.5 384.8 432.0 479.3 526.5 992.2 1107.0 1221.7 1336.5 1451.2 1566.0 1680.7 1795.5 1910.2 0.0-169.9 -168.8 -169.9 -173.2 -178.7 -186.4 -196.3 -162.6 -131.7 -104.0 -79.7 -58.5 -40.6 -26.0 -14.6 -6.5 -1.6 0.0
Disclaimer
Status of spreadsheet
Public release version.
Date Version
06-Aug-99 RCC81 v1.0
09-Aug-99 RCC81 v1.0a
All advice or information from the British Cement Association and/or Reinforced Concrete Council is intended for those who will evaluate the significance and limitations of its contents and take responsibility for its use and application. No liability (including that for negligence) for any loss resulting from such advice or information is accepted by the BCA, RCC or their subcontractors, suppliers or advisors. Users should note that all BCA software and publications are subject to revision from time to time and should therefore ensure that they are in possession of the latest version.
This spreadsheet should be used in compliance with the accompanying publication 'Spreadsheets for concrete design to BS 8110 & EC2' available from British Cement Association, Telford Avenue, Crowthorne, Berkshire RG45 6YS.
Revision history RCC81 Foundation Pads
Action
438
Correction to recommended e's in DOUBLE (RW) 438
All advice or information from the British Cement Association and/or Reinforced Concrete Council is intended for those who will evaluate the significance and limitations of its contents and take responsibility for its use and application. No liability (including that for negligence) for any loss resulting from such advice or information is accepted by the BCA, RCC or their subcontractors, suppliers or advisors. Users should note that all BCA software and publications are subject to revision from time to time and should therefore ensure that they are in possession of the latest
This spreadsheet should be used in compliance with the accompanying publication 'Spreadsheets for concrete design to BS 8110 & EC2' available from British Cement Association, Telford Avenue, Crowthorne, Berkshire RG45 6YS.
Revision history RCC81 Foundation Pads
Size (kB)
First public release. Includes b version comments