design tables

DESIGN OF FORMWORK

LOADS

A.VERTICAL WEIGHT OF CONCRETE - 2500 KG/ CU.M SELF WEIGHT OF FORM - 50 TO 75 KG/ M2 CONSTRUCTION LIVE LOAD - 200 TO 375 KG/M2

MINIMUM DESIGN LOAD - 500 TO 625 KG / M2

B.LATERAL PRESSURE OF CONCRETE RATE OF PLACING WORKABILITY TEMPERATURE. THICKNESS; ARCHING EFFECT.

2% OF TOTAL DEAD LOAD, 150 KG/M. OF FLOOR EDGE. WIND LOAD. SPECIAL EQUIPMENTS. E.G.PUMP, TRANSPORT PIPES, BRAKING.

C. HORIZONTAL LOADS.

LATERAL

PRESSURE OF

CONCRETE

CONCRETE Value of C2

CONCRETE

PRESSURE

DATA

1) OPC, RHPC or SRPC w ithout admixtures 1) OPC, RHPC or SRPC w ith a retarder 1) LHPBFC, PBFC, PPFAC or blends containing less

Concrete 2) OPC, RHPC or SRPC w ith any admixture , 2) LHPBFC, PBFC, PPFAC or blends containing less than 70% ggbfs or 40% pfa w ith a retarder

Groups except a retarder than 70% ggbfs or 40% pfa w ithout admixtures. 2) Blends containing more than 70% ggbfs

3) LHPBFC, PBFC, PPFAC or blends containing less or 40% pfa

----> than 70% ggbfs or 40% pfa w ith any admixture ,

except a retarder.

Conc. Form Rate of Rise (m/h) Rate of Rise (m/h) Rate of Rise (m/h)temp. ht. 0.5 1 2 3 4 6 8 10 15 20 0.5 1 2 3 4 6 8 10 15 20 0.5 1 2 3 4 6 8 10 15 20

(deg C) (m)3 59 67 77 78 78 78 78 78 78 78 75 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78

4 67 75 87 95 101 104 104 104 104 104 87 93 102 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104 104

5 6 79 88 100 110 118 130 141 149 156 156 104 112 123 131 138 148 156 156 156 156 129 136 145 152 156 156 156 156 156 156

10 96 106 119 130 139 153 165 176 198 216 130 139 152 161 169 182 193 202 221 237 165 173 184 192 199 211 220 228 245 258

15 113 123 137 148 157 173 185 197 221 240 156 165 179 189 197 211 223 233 255 273 199 207 220 229 237 250 261 270 290 306

3 48 57 69 77 78 78 78 78 78 78 59 66 76 78 78 78 78 78 78 78 69 76 78 78 78 78 78 78 78 78

4 53 63 76 85 93 104 104 104 104 104 66 74 86 94 100 104 104 104 104 104 79 86 96 103 104 104 104 104 104 104

10 6 61 71 85 95 104 118 130 140 156 156 77 87 99 109 117 130 140 148 156 156 94 102 114 123 130 141 150 156 156 156

10 72 83 97 108 118 133 146 158 182 202 95 104 118 129 137 152 164 175 197 215 117 126 139 149 157 171 182 192 212 229

15 83 94 109 120 130 146 159 171 196 217 111 121 136 147 156 171 184 195 219 239 139 149 162 173 182 196 208 219 242 261

3 42 52 65 74 78 78 78 78 78 78 50 58 70 78 78 78 78 78 78 78 57 65 75 78 78 78 78 78 78 78

4 46 56 70 80 89 102 104 104 104 104 55 64 77 86 94 104 104 104 104 104 64 72 84 92 99 104 104 104 104 104

15 6 51 61 76 87 96 112 124 135 156 156 63 72 86 97 105 120 131 141 156 156 74 84 97 106 114 128 138 147 156 156

10 59 70 85 96 106 122 136 147 173 193 75 85 99 110 120 135 148 160 183 203 90 100 114 125 134 148 161 172 194 213

15 67 78 93 105 114 131 145 157 183 205 86 97 112 123 133 149 162 174 199 220 106 116 131 142 151 166 179 191 215 235

3 38 49 62 72 78 78 78 78 78 78 44 53 66 75 78 78 78 78 78 78 49 58 70 77 78 78 78 78 78 78

4 41 51 66 77 86 100 104 104 104 104 48 57 71 81 90 102 104 104 104 104 54 64 77 86 94 104 104 104 104 104

20 6 45 56 71 82 92 107 121 132 154 156 54 64 78 89 98 113 126 136 156 156 62 72 86 96 105 119 131 141 156 156

10 51 62 77 89 99 115 129 141 167 189 63 73 88 99 109 125 138 150 175 196 74 84 99 110 119 135 148 159 183 203

15 57 68 83 95 105 122 136 148 175 197 71 82 97 109 119 135 149 161 187 208 86 96 111 122 132 148 161 173 198 219

3 36 46 61 71 78 78 78 78 78 78 40 50 64 73 78 78 78 78 78 78 44 54 66 75 78 78 78 78 78 78

4 38 49 63 75 84 99 104 104 104 104 43 53 68 78 87 101 104 104 104 104 48 58 72 82 90 102 104 104 104 104

25 6 41 52 67 79 88 105 118 130 154 156 48 58 73 84 94 109 122 133 155 156 54 65 79 90 99 114 126 137 156 156

10 46 57 72 84 94 111 125 137 163 185 55 65 80 92 102 118 132 144 170 191 64 74 89 100 110 126 139 151 176 196

15 50 61 77 89 99 116 130 143 169 192 61 72 88 99 109 126 140 152 178 200 72 83 98 110 120 136 150 162 188 209

DESIGN FORMWORK PRESSURES FOR COLUMNS

1) OPC,RHPC or SRPC w ithout admixtures 1) OPC, RHPC or SRPC w ith a retarder 1) LHPBFC , PBFC , PPFAC or blends containing less

Concrete 2) OPC,RHPC or SRPC w ith any admixture , except 2) LHPBFC,PBFC,PPFAC or blends containing less than 70% ggbfs or 40% pfa w ith a retarder

Groups a retarder than 70% ggbfs or 40% pfa w ithout admixtures. 2) Blends containing more than 70% ggbfs

3) LHPBFC, PBFC, PPFAC or blends containing less or 40% pfa

----> than 70% ggbfs or 40% pfa w ith any admixture ,

except a retarder.

Conc. Form Rate of Rise (m/h) Rate of Rise (m/h) Rate of Rise (m/h)temp. ht. 0.2 0.3 0.4 0.5 1.0 1.5 2.0 3.0 5.0 10 0.2 0.3 0.4 0.5 1.0 1.5 2.0 3.0 5.0 10 0.2 0.3 0.4 0.5 1.0 1.5 2.0 3.0 5.0 10

(deg C) (m)2 40 42 43 44 49 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52 52

3 48 50 52 53 58 62 66 71 78 78 67 68 69 70 75 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78

5 4 55 57 59 60 66 70 74 80 89 103 76 78 80 81 86 89 92 97 104 104 98 99 101 102 104 104 104 104 104 104

6 66 68 70 71 77 82 86 92 103 121 93 95 96 97 103 107 110 116 125 140 120 121 123 124 129 132 135 140 147 156

10 82 85 87 88 95 100 104 111 122 142 118 120 122 123 129 134 138 144 154 172 153 155 157 158 164 168 171 177 186 202

2 30 32 34 35 41 45 48 52 52 52 40 41 43 44 48 52 52 52 52 52 49 50 51 52 52 52 52 52 52 52

3 36 38 39 41 47 52 56 62 71 78 47 49 51 52 58 62 65 70 78 78 59 61 62 64 68 72 74 78 78 78

10 4 40 42 44 46 52 57 61 68 78 96 54 56 58 59 65 69 73 79 88 103 68 70 71 73 78 82 85 90 98 104

6 47 49 51 53 59 65 69 76 87 107 64 67 68 70 76 81 85 91 102 120 82 84 86 87 93 97 101 107 116 133

10 58 60 62 64 71 76 81 88 100 121 81 83 85 87 93 98 102 110 121 141 104 106 108 110 116 120 124 131 141 160

2 25 27 29 30 37 41 45 50 52 52 31 33 35 36 42 46 49 52 52 52 38 40 41 42 47 50 52 52 52 52

3 28 31 33 34 41 46 50 57 67 78 37 39 41 42 48 53 57 63 72 78 45 47 49 50 56 60 63 69 77 78

15 4 31 34 36 37 44 49 54 61 72 92 41 44 45 47 53 58 62 69 79 97 51 53 55 57 62 67 71 77 86 101

6 36 39 41 43 50 55 59 67 79 100 49 51 53 55 61 66 71 78 89 109 61 63 65 67 73 78 82 88 99 118

10 44 47 49 50 58 63 68 75 87 110 60 63 65 66 73 79 83 90 102 123 77 79 81 83 89 94 98 106 117 137

2 21 24 26 27 34 39 43 49 52 52 26 28 30 32 38 42 46 51 52 52 31 33 35 36 42 46 49 52 52 52

3 24 26 28 30 37 42 47 54 65 78 30 33 34 36 43 47 52 58 68 78 37 39 40 42 48 53 56 63 72 78

20 4 26 29 31 33 40 45 49 57 68 89 34 36 38 40 46 51 56 63 74 93 41 43 45 47 53 58 62 69 79 96

6 30 32 35 36 43 49 53 61 73 95 39 42 44 45 52 57 62 69 81 102 48 51 53 54 61 66 70 77 88 108

10 36 38 40 42 49 55 60 67 80 103 48 50 52 54 61 67 71 79 91 113 60 62 64 66 73 78 82 90 102 123

2 19 21 23 25 32 37 41 48 52 52 23 25 27 29 35 40 44 50 52 52 27 29 31 32 38 42 46 51 52 52

3 21 24 26 27 35 40 44 52 63 78 26 28 30 32 39 44 48 55 66 78 31 33 35 37 43 48 52 59 69 78

25 4 23 25 27 29 36 42 46 54 66 88 29 31 33 35 42 47 51 59 70 90 34 37 39 40 47 52 56 63 74 93

6 26 28 30 32 39 45 50 57 70 92 33 35 37 39 46 52 56 64 76 97 40 42 44 46 53 58 63 70 81 102

10 30 33 35 37 44 50 54 62 75 98 40 42 44 46 53 59 63 71 83 106 49 51 53 55 62 67 72 80 92 114

DESIGN FORMWORK PRESSURES FOR WALLS

TABLE-F1

ALLOWABLE SPAN OF PLYWOOD (in cm)

1kn = 100 kgs.

TABLE-F2 ALLOWABLE SPAN OF H-BEAM (SECONDARY) BELOW R.C.SLAB1kn = 100 kgs.

CHART-1 (MAXIMUM SPAN OF H-16 BEAMS) CHART-2 (MAXIMUM SPAN OF H-20 BEAMS)

TABLE-F3

ALLOWABLE SPAN OF H-BEAM (PRIMARY) BELOW R.C.SLAB FOR INTERMEDIATE ROWS

1kn = 100 kgs.


TABLE-F4

ALLOWABLE SPAN OF H-BEAM (PRIMARY) BELOW R.C.SLAB FOR END ROWS

1kn = 100 kgs.


LOADING

TABLES FOR

FLOOR

PROPS - CT

(1 TON= 10 KN)

PERMISSIBLE LOAD IN KN

TABLE-F5

TABLE-W1

L&T-DOKA WALL FORMWORKS

TABLE-W2

L&T-DOKA WALL FORMWORKS

L&T-DOKA COLUMN FORMWORKS

TABLE-C1

L&T-DOKA COLUMN FORMWORKS

FORMWORK PLANNING

Steps for Formwork Planning

– Developing a basic plan.

– Compare alternate methods.

– Examine form plan in relation to total job.

– Plan for maximum reuse.

COST ESTIMATE

The cost of Formwork consists of cost of the following:

– Material.

– Labour for making,erection & dismantling of Formwork.

– P&M for making, erection & transporting of Formwork.

– Repair.

– Cleaning & Storage.

METHOD OF COST CALCULATION- 2 WAYS.

(i) Cost of materials – Scrap value = Cost of material Number of repetitions per use (ii) Cost of materials – Scrap value x Period of use for

Life of materials the item / project

= Cost of material for the item / project

L & T DOKA WALL FORMWORK WITH CRANEMATERIAL PRODUCTIVITY ESTIMATE FORMAT - I

QUANTITY REQD.MATERIAL S.NO ITEMS PER SQMPRODUCTIVITYFOR MAKING (1) (2)

1 DOKA STEEL IN KGS 48.1 KGS (1)/n = 9.62 KG MONTH/SQM

2 H-16 BEAM IN RMT 3.5 RMT (1)/n =0.70 RMT MONTH /SQM

3 PLYWOOD IN SQMa) 12 MM 1.1 SQM (1)/N =0.044 SQM/SQM

b) 19 MM (1)/N SQM/SQM

4 TIMBER IN CFT 0.18 CFT (1)/N =0.007 CFT/SQM

5 STRUCTURAL STEEL IN KGS (1)/N KG/SQM

ASSUMPTION "n" DENOTES NO.OF CYCLES PER MONTH = 5 "N" TOTAL NO.OF USES OF THE MATERIAL = 25

L & T DOKA WALL FORMWORK WITHOUT CRANE

MATERIAL PRODUCTIVITY ESTIMATE FORMAT - I

QUANTITY REQD. MATERIAL S.NO ITEMS PER SQM PRODUCTIVITY

FOR MAKING (1) (2)

DOKA STEEL IN KGS 68 KGS (1)/n = 13.80 KG MONTH/SQM

H-16 BEAM IN RMT 3.8 RMT (1)/n = 0.76 RMT MONTH /SQM

PLYWOOD IN SQMa) 12 MM 1.1 SQM (1)/N =0.044 SQM/SQM


TIMBER IN CFT 0.18 CFT (1)/N =0.007 CFT/SQM

STRUCTURAL STEEL IN KGS (1)/N KG/SQM


1

2

3

4

5

L&T-DOKA WALL FORMWORK WITHOUT CRANE

(1)/n =22.33 KG MONTH/SQM

(1)/n = 0.93 RMT MONTH /SQM

"N" TOTAL NO.OF USES OF THE MATERIAL = 25

L & T DOKA COLUMN FORMWORK WITH CRANE



FOR MAKING (1) (2)

1 DOKA STEEL IN KGS 134 KGS

2 H-16 BEAM IN RMT 5.6 RMT

3 PLYWOOD IN SQMa) 12 MM 1.1 SQM (1)/N = 0.042 SQM/SQM


4 TIMBER IN CFT 0.20 CFT (1)/N =0.007 CFT/SQM


ASSUMPTION "n" DENOTES NO.OF CYCLES PER MONTH = 6

L & T DOKA COLUMN FORMWORK WITHOUT CRANE



FOR MAKING (1) (2)

1 DOKA STEEL IN KGS 110 KGS (1)/n = 18.33 KG MONTH/SQM

2 H-16 BEAM IN RMT 6 RMT (1)/n = 1.0 RMT MONTH /SQM

3 PLYWOOD IN SQMa) 12 MM 1.1 SQM (1)/N = 0.044 SQM/SQM


4 TIMBER IN CFT 0.20 CFT (1)/N = 0.008 CFT/SQM



(WITH BEAM FORMWORK BY CONVENTIONAL)



FOR MAKING (1) (2)



PLYWOOD IN SQMa) 12 MM 1.10 SQM (1)/N = 0.11 SQM/SQM


TIMBER IN CFT 1.17 CFT (1)/N = 0.12 CFT/SQM

STRUCTURAL STEEL IN KGS

(1)/N KG/SQM


1

2

3

4

5

L & T DOKA FLEX SYSTEM USING PLYWOOD AS SHEATHING

(WITH BEAM FORMWORK AS CONVENTIONAL)



FOR MAKING (1) (2)



PLYWOOD IN SQMa) 12 MM 0.60 SQM (1)/N = .06 SQM/SQM


TIMBER IN CFT 1.25 CFT (1)/N = 0.13 CFT/SQM

STRUCTURAL STEEL IN KGS

(1)/N KG/SQM

ASSUMPTION "n" DENOTES NO.OF CYCLES PER MONTH = 2

”N" TOTAL NO.OF USES OF THE MATERIAL = 10

1

2

3

4

5

L & T DOKA FLEX SYSTEM USING STEEL FLOOR FORM AS SHEATHING

SLNO TYPE OF FORMWORK PRODUCTIVITY

1 WALL FORMWORK - using Crane 0.90 MAN HOUR PER SQM.

[STRAIGHT WALLS]

2 WALL FORMWORK - without Crane 1.70 MAN HOURS PER SQM.

[STRAIGHT WALLS]

3 WALL FORMWORK - using Crane 1.30 MAN HOURS PER SQM.

[CIRCULAR WALLS]

4 SLAB FORMWORK - L&T FLEX 1.50 MAN HOURS PER SQM.

[SLABS & BEAMS]

5 SLAB FORMWORK - L&T FLEX 0.80 MAN HOUR PER SQM.

[FLAT SLABS]

6 SLAB FORMWORK - USING H.D.T 2.10 MAN HOURS PER SQM.

[SLABS & BEAMS]

7 COLUMN FORMWORK 1.80 MAN HOURS PER SQM.

[WITHOUT CRANE]

8 COLUMN FORMWORK 1.0 MAN HOUR PER SQM.

[USING CRANE]

9 ASSEMBLY OF H.D.TOWERS 0.20 MAN HOUR PER CUM.

[2.25 X 1.50 X 4.80 M]

10 ASSEMBLY OF H.D.TOWERS 0.30 MAN HOUR PER CUM.

[1.50 X 1.50 X 4.80 M]

S U M M A R Y OF PRODUCTIVITY

design tables

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