Project PROPOSED DEVELOPMENT TERRACONSULT ENGINEERS
Client X Made by Date Page
Location FLOOR PANEL 1 A to B: 1 to 2 M.N 19-Oct-2023 1
2-WAY SPANNING INSITU CONCRETE SLABS to BS 8110:1997 (Table 3.14) Checked Revision Job No
Originated from MURII II -
DIMENSIONS MATERIALS STATUS VALID DESIGN
short span, lx m 5.70 fcu N/mm² 25 gc = 1.50 A B
long span, ly m 6.40 fy N/mm² 500 gs = 1.05 Edge 1
h mm 250 Density kN/m³ 24 1
Lx = 5.698 m
Top cover mm 25 (Normal weight concrete) Plan
Btm cover mm 25
Edge 4
Edge 2
LOADING characteristic EDGE CONDITIONS
Self weight kN/m² 6.25 Edge 1 c C = Continuous
Extra dead kN/m² 1.00 Edge 2 d D = Discontinuous Ly = 6.4 m
Total Dead, gk kN/m² 7.25 gf= 1.35 Edge 3 c
Imposed, qk kN/m² 4.00 gf= 1.50 Edge 4 c 2
Design load, n kN/m² 15.79 See Figure 3.8 and clauses 3.5.3.5-6 Edge 3
SHORT LONG EDGE 1 EDGE 2 EDGE 3 EDGE 4 BS8110
MAIN STEEL SPAN x SPAN y Continuous Free Continuous Continuous Reference
ßs 0.034 0.028 0.045 0.000 0.045 0.037 Table 3.14
M kNm/m 17.3 14.1 23.1 0.0 23.1 18.8
d mm 219.0 207.0 219.0 207.0 180.0 207.0
k' 0.156 0.156 0.156 0.156 0.156 0.156
k 0.014 0.013 0.019 0.000 0.028 0.018
Z mm 208.0 196.6 208.0 196.6 171.0 196.6 3.4.4.4
As req mm²/m 175 151 233 0 283 201
As min mm²/m 325 325 325 325 325 325 Table 3.25
As deflection mm²/m 175 151 ~ ~ ~ ~
Ø mm 12 12 12 12 12 12
Layer B1 B2 T1 T1 T1 T1
@ mm 350 350 350 350 350 350
As prov mm²/m 323 323 323 323 323 323
= % 0.148 0.156 0.148 0.156 0.180 0.156 %
S max mm 669 633 669 633 552 633 Clause
Subclause (a) (a) (a) (a) (a) (a) 3.12.11.2.7
DEFLECTION
fs 180 155 240 0 292 207 Eqn 8
Mod factor 2.000 Eqn 7
Perm L/d 52.00 Actual L/d 26.02 Asx enhanced 0.0% for deflection control Table 3.10
TORSION STEEL BOTH EDGES DISCONTINUOUS ONE EDGE DISCONTINUOUS
Ø mm 12 X Y X Y
As req mm²/m 325 325 3.5.3.5
As prov T mm²/m 5000 5000 323 323
Additional As T req mm² 0 0 1 1
As prov B mm²/m 323 323 323 323
Bottom steel not curtailed in edge strips at free edges
SUPPORT REACTIONS (kN/m char uno) (See Figure 3.10) Sum ßvx = 0.799 Table 3.15
EDGE 1 EDGE 2 EDGE 3 EDGE 4 Sum ßvy = 0.600
1, A-B B, 2-1 2, A-B A, 2-1 equations
ßv 0.400 0.240 0.400 0.360 19 & 20
Dead kN/m 16.51 9.91 16.51 14.87
Imposed kN/m 9.11 5.47 9.11 8.21
Vs kN/m 35.9 21.6 35.9 32.4
OUTPUT/SUMMARY
SHORT LONG EDGE 1 EDGE 2 EDGE 3 EDGE 4
PROVIDE SPAN SPAN 1, A-B B, 2-1 2, A-B A, 2-1
MAIN STEEL T12 @ 350 B1 T12 @ 350 B2 T12 @ 350 T1 T12 @ 350 T2 T12 @ 350 T1 T12 @ 350 T2
ADDITIONAL CORNER 1 CORNER 2 CORNER 3 CORNER 4
TORSION STEEL A1 B1 B2 A2
X direction 1 T12 T 1 T12 T
placed in edge strips
Y direction 1 T12 T 1 T12 T
CHECKS BAR Ø SINGLY MIN MAX GLOBAL
Lx > Ly < COVER REINFORCED SPACING SPACING DEFLECTION STATUS
OK OK OK OK OK OK VALID DESIGN
Project PROPOSED DEVELOPMENT
Location FLOOR PANEL 1 A to B: 1 to 2
2-WAY SPANNING INSITU CONCRETE SLABS to BS 8110:1997 (Table 3.14) Made by M.N Job No
Originated from MURII Date 19-Oct-23
APPROXIMATE WEIGHT of REINFORCEMENT
SUPPORT WIDTHS GRIDLINE 1 B 2 A
(mm) WIDTH 300 300 300 300
TOP STEEL Type Dia Spacing No Length Unit wt Weight
Across grid 1 T 12 @ 350 18 1425 0.888 22.8
Across grid B T 12 @ 350 16 1350 0.888 19.2
Across grid 2 T 12 @ 350 18 1425 0.888 22.8
Across grid A T 12 @ 350 16 1600 0.888 22.7
Along grid 1 T 12 @ 325 4 4725 0.888 16.8
Along grid B T 12 @ 325 4 3925 0.888 13.9
Along grid 2 T 12 @ 325 4 4725 0.888 16.8
Along grid A T 12 @ 325 5 3925 0.888 17.4
Torsion bars T 12 4 1150 0.888 4.1
BOTTOM STEEL
Short span - middle T 12 @ 350 14 4725 0.888 58.7
edges T 12 @ 350 4 6000 0.888 21.3
Long span - middle T 12 @ 350 13 5625 0.888 64.9
edges T 12 @ 350 4 6525 0.888 23.2
SUMMARY
Reinforcement density (kg/m³) 34.8 Total reinforcement in bay (kg) 325
Disclaimer
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will evaluate the significance and limitations of its contents and take responsibility for its use and application. No
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subcontractors, suppliers or advisors. Users should note that all BCA software and publications are subject to revisi
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 desig
8110 and EC2' available from British Cement Association, Telford Avenue, Crowthorne, Berkshire RG45 6YS.
Status of spreadsheet
Public release version.
Revision history RCC94 Two-way Slabs (Tables)
Date Version
22-Jan-03 RCC94 v2.1
11-Oct-02 RCC94 v2.0
22-Jun-00 RCC94 v1.3
8-Jun-00 RCC94 v1.2
24-Mar-00 RCC94 v1.1
6-Aug-99 RCC94 v1.0
mation from the British Cement Association and/or Reinforced Concrete Council is intended for those who
gnificance and limitations of its contents and take responsibility for its use and application. No liability
negligence) for any loss resulting from such advice or information is accepted by the BCA, RCC or their
pliers or advisors. Users should note that all BCA software and publications are subject to revision from
ould therefore ensure that they are in possession of the latest version.
hould be used in compliance with the accompanying publication 'Spreadsheets for concrete design to BS
lable from British Cement Association, Telford Avenue, Crowthorne, Berkshire RG45 6YS.
This spreadsheet is shareware. It may be distributed freely, but may not be used
for commercial purposes until the user has registered with the RCC.
RCC94 Two-way Slabs (Tables)
Action Size (kB)
DETR logo replaced by DTI. 206
Version 2 enhancements 224
Orientation warning added at MAIN:Q21 (N Thomas)
136
Conditional formating Main!K10:P19 altered
MAIN:D34 etc corrected to include As min. 135
MAIN:F46 moved to correct position, MAIN:D64-D67 reformatted, continuity
135
hatching added to diagram.
First public release.
136
Includes b version comments
