COLUMN REACTIONS kN, kNm Axial (kN) 1001.0 Mx (kNm) -20.0 My (kNm) Hx (kN) Hy (kN)
Single column base
Date
Plot (to scale)
characteristic
IMPOSED
Key
WIND
128.0 Grnd Brg Pressure Bending
99%
fsx
84%
(As/Asprov) fsy
STATUS VALID DESIGN
Shear
93%
v xx
52%
v yy
BEARING PRESSURES kN/m²
punching
characteristic
CORNER
1
2
3
4
no wind with wind
198.7 198.7
186.5 186.5
198.7 198.7
186.5 186.5
REINFORCEMENT . Mxx = 275.0 kNm b = 1800 mm d= 392 mm As = 1686 mm² PROVIDE 9 T16 @ 225 B1 As prov = 1810 mm² . . BEAM SHEAR Vxx = 329.4 kN at d from col face v = 0.467 N/mm² or Vxx = 135.2 kN at 2d from col face v = 0.192 N/mm² vc = 0.451 N/mm² PUNCHING SHEAR d ave = 385 mm As prov = 0.210 % v = 0.350 N/mm²
37% 83% 0%
25%
50%
75% 100% 125%
Efficiency . kNm mm mm mm²
Myy = 268.0 b = 3300 d= 378 As = 1703 PROVIDE 18 T12 @ 200 B2 As prov = 2036 mm² . .
Vyy = v= or Vyy = v= vc =
361.4 0.290 31.2 0.025 0.392
u crit = v max = vc =
3600 mm 1.441 N/mm² at col face 0.424 N/mm²
.
kN at d from col face N/mm² kN at 2d from col face N/mm² N/mm² .
Project
Spreadsheets to BS 8110 Level -1 Base B1 PAD FOUNDATION DESIGN to BS 8110:1997
XX SHEARS @ d from col face from right m 2.640 from left m 0.660 to zero press m 2.260 local press kN/m 522.75 V1 kN 347.0 V2 kN 1108.3 choose V kN 329.4 Design Vxx kN 329.4 @ 2d from col face from right m 3.030 from left m 0.270 to zero press m 1.870 local press kN/m 526.39 V1 kN 142.5 V2 kN 1218.7 choose V kN 135.2 Design Vxx kN 135.2
0.660 2.640 4.240 504.23 330.8 1069.1 313.1
0.270 3.030 4.630 500.59 134.8 1159.0 127.6
3.4.5.10 3.4.5.8
2.260 441.42 293.1 935.7 277.9
4.240 425.55 279.1 902.1 264.0
2.255 336.71 223.7 713.0 211.1
4.235 323.48 212.0 685.0 199.4
3.4.5.10 3.4.5.8
1.870 444.54 120.3 1029.0 114.1
4.630 422.43 113.8 977.8 107.6
1.865 339.31 91.9 784.6 86.7
F/S OVERTURNING L/6 k 2-4 k 1-3 6ey/B if ey>B/6 k 1-2 k 3-4 N/L edge 2-4 edge 1-3 N/B edge 1-2 edge 3-4 3(L/2-ex) 3(B/2-ey)
Asx increased Asy increased
4.625 320.88 86.4 742.0 81.2
Area 50.3 78.5 113.1 201.1 314.2 490.9 804.2 1256.6
Dia 8 10 12 16 20 25 32 40
Project
Spreadsheets to BS 8110 Level -1 Base B1 PAD FOUNDATION DESIGN to BS 8110:1997
Location
Originated from RCC81.xls on CD
YY MOMENTS from top m 1.025 from btm m 0.775 to zero press m 1.925 local press kN/m 941.40 M1 kNm 282.7 M2 kNm 581.4 choose M kNm 268.0 Design Myy kNm 268.0 YY SHEARS @ d from col face from top m 1.395 from btm m 0.405 to zero press m 2.295 local press kN/m 941.40 V1 kN 381.3 V2 kN 1080.3 choose V kN 361.4 Design Vyy kN 361.4 @ 2d from col face from top m 1.765 from btm m 0.035 to zero press m 2.665 local press kN/m 941.40 V1 kN 32.9 V2 kN 1254.4 choose V kN 31.2 Design Vyy kN 31.2 REINFORCEMENT
3300 choose dia 12 20 378 370 0.1558 0.0162 0.0169 359.1 351.5 Punching ave r 1703 1740 1046 472 As X 1931 1931 As Y ave r 18 10.69 200 325 As X 2036 As Y 0.163 1650 1751 > 1,650 2334 200
0.4668 0.4692 0.1917 0.1927 0.4515 OK 0.00% 0.00%
0.2897 0.2960 0.0250 0.0256 0.3919 OK 0.00% 0.00%
385
1.5 x d ave 577.5 R
B
kN N/mm² kN/m² kN N/mm²
1694.5 1.441 OK 285.27 485.2 0.3501 OK
1.2(G+Q+W)
1430.5 1.217 OK 240.82 409.6 0.2956 OK
0.00054 485 472 0.00118 1073 1046
0.94128 0.52734 1.46862 0.93647 0.51618 1.45266
380 570
T
1650 1650 900 900 1177.5 1177.5 702.5 702.5 0 0 0 0 0 0 0 0 1 1 1 1 perimeter falls within base and on 2 sides mm 3600 m² 4.239 % 0.210 N/mm² 0.4242 mm mm Y,N mm Y,N
REINFORCEMENT Btm Mxx - 405.0 b = 3000 d = 692 As = 1406
Grnd Brg Pressure
Bending
fsx
Myy b= d= As =
PROVIDE 15 T16 @ 225 B1 As prov = 3016 mm²
63%
(As/Asprov) fsy
Shear
kNm mm mm mm²
92%
251.7 3000 676 895
72%
v xx
15%
v yy
6%
punching
49% 0%
133%
Efficiency'
& 15 T16 @ 225 B2 As prov = 3016
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0
Top Mxx + 0.0 kNm d = 692 mm As = 0 mm² PROVIDE 15 T16 @ 225 T1 As prov = 3016 mm² . BEAM SHEAR Vxx = 228.6 v = 0.110 or Vxx = 0.0 v = 0.000 vc = 0.372 PUNCHING SHEAR d ave = 684
Myy + 0.0 d = 676 As = 0 & 15 T16 @ 225 T2 As prov = 3016 .
-200
-300 -400 -500
Moment
.
.
Vyy = v= or Vyy = v= vc =
kN at d N/mm² kN at 2d N/mm² N/mm²
87.3 0.043 0.0 0.000 0.375
0.0
6000
0.5
1.0
1.5
2.0
0 -50 -100 -150 -200
u crit =
Columns
Zero axis
Mx Diagram
. mm
-100
mm
-250
.
2.5
3.0
3.5
Project
Spreadsheets to BS 8110 Base B3/B4
Location
PAD FOUNDATION DESIGN to BS 8110:1997 Originated from RCC81.xls on CD
Made by RMW Job No R68 Date 27-Jun-14 sheet 1 of 5
CHARACTERISTIC PRESSURES N1 N2 Total N Mx1 Mx2 Total Mx ex My1 My2 Total My ey 6ex/L if ex>L/6 k 2-4 k 1-3 6ey/B if ey>B/6 k 1-2 k 3-4 N/A corner 1 corner 2 corner 3 corner 4
ULTIMATE PRESSURES N1 N2 Total N Mx1 Mx2 SMx My1 My2 SMy ex ey 6ex/L if ex>L/6 k 2-4 k 1-3 6ey/B if ey>B/6 k 1-2 k 3-4 N/L edge 2-4 edge 1-3 N/B edge 1-2 edge 3-4 3(L/2-ex) 3(B/2-ey)
XX MOMENTS Column 1 from right from left to zero press local press M1 M2 add choose M Column 2 from right from left to zero press local press M1 M2 add choose M Design Mxx+
Disclaimer 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.
Status of spreadsheet Public release version. Revision history RCC81 Foundation Pads
Date
Version
06-Aug-99 RCC81 v1.0 09-Aug-99 RCC81 v1.0a
Action First public release. Includes b version comments Correction to recommended e's in DOUBLE (RW)
d/or Reinforced Concrete Council itations of its contents and take hat for negligence) for any loss A, RCC or their subcontractors, and publications are subject to y are in possession of the latest
anying publication 'Spreadsheets ent Association, Telford Avenue,
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