Typical Seismic_resistant Details (flexural Members).xlsx
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ACI 18.8.5 Longitud de desarrollo de barras en tracción 18.8.5.1 Terminadas con gancho estándar Barras (de 9.5mm /#10 a 35.8mm/#36) Ø (mm)
kg/m
(mm)
12db (mm)
Ø interno (mm) Ø eje (mm)
4 db = 4 db =
64
120
60
70
64
144
72
84
4 db = 4 db =
64
168
84
98
64
192
96
112
4 db = 4 db =
72
216
108
126
80
240
120
140
4 db = 4 db =
88
264
132
154
100
300
150
175
140
336
224
252
6.313
5 db = 5 db =
160
384
256
288
7.990
5 db =
180
432
288
324
10
0.395
12
0.617
14
0.888
16
1.208
18
1.578
20
2.466
22
2.984
25
3.853
28
4.834
32 36 fy =
412 Mpa
db =
12 mm
λ= f´c =
1 21 Mpa
ldh =
200 mm
270
gancho estándar
48 mm 200 mm
Ø = 72 mm
64 mm
Øeje = 84 mm Ltotal =
395 mm
L desde curvatura =
195 mm
147
48 mm 200 mm
Ø = 72 mm 144 mm
18.8.5.1 Para una barra recta
Ltotal =
410 mm
L esde curvatura =
210 mm
162
25.5.2.1 La longitud de empalme por traslapo en tracción
Barras (de 9.5mm /#10 a 35.8mm/#36) ld (mm) Ø (mm) kg/m 10 12 14 16 18 20 22 25 28 32 36
0.395 0.617 0.888 1.208 1.578 2.466 2.984 3.853 4.834 6.313 7.990
416 499 582 666 749 832 915 1040 1165 1331 1498
lst (mm) veces del diámetro 541 649 757 865 973 1082 1190 1352 1514 1731 1947
55 55 55 55 55 55 55 55 55 55 55
El espesor de concreto colocado fresco en una sola operación debajo la barra no excede de 300
mm
SI SI 18.8.5.3 (a) NO
ldh (mm) G (mm)
L (mm)
166
64
120
200
64
144
233
64
168
266
64
192
300
72
216
333
80
240
366
88
264
416
100
300
466
140
336
532
160
384
599
180
432
kg/m
(mm)
12db (mm)
Ø interno (mm) Ø eje (mm)
4 db = 4 db =
64
120
60
70
64
144
72
84
4 db = 4 db =
64
168
84
98
64
192
96
112
4 db = 4 db =
72
216
108
126
80
240
120
140
4 db = 4 db =
88
264
132
154
100
300
150
175
140
336
224
252
6.313
5 db = 5 db =
160
384
256
288
7.990
5 db =
180
432
288
324
10
0.395
12
0.617
14
0.888
16
1.208
18
1.578
20
2.466
22
2.984
25
3.853
28
4.834
32 36 fy =
412 Mpa
db =
12 mm
λ= f´c =
1 21 Mpa
ldh =
200 mm
270
gancho estándar
48 mm 200 mm
Ø = 72 mm
64 mm
Øeje = 84 mm Ltotal =
395 mm
L desde curvatura =
195 mm
147
48 mm 200 mm
Ø = 72 mm 144 mm
18.8.5.1 Para una barra recta
Ltotal =
410 mm
L esde curvatura =
210 mm
162
25.5.2.1 La longitud de empalme por traslapo en tracción
Barras (de 9.5mm /#10 a 35.8mm/#36) ld (mm) Ø (mm) kg/m 10 12 14 16 18 20 22 25 28 32 36
0.395 0.617 0.888 1.208 1.578 2.466 2.984 3.853 4.834 6.313 7.990
416 499 582 666 749 832 915 1040 1165 1331 1498
lst (mm) veces del diámetro 541 649 757 865 973 1082 1190 1352 1514 1731 1947
55 55 55 55 55 55 55 55 55 55 55
El espesor de concreto colocado fresco en una sola operación debajo la barra no excede de 300
mm
SI SI 18.8.5.3 (a) NO
ldh (mm) G (mm)
L (mm)
166
64
120
200
64
144
233
64
168
266
64
192
300
72
216
333
80
240
366
88
264
416
100
300
466
140
336
532
160
384
599
180
432
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