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Combined walls with CAZ box piles - CAZ/AZ

Combined walls built up with CAZ box piles and standard double AZ sheet piles. There are several combinations possible to achieve high bending moments and moment of inertia.

Combiwalls CAZ/AZ steel sheet piles

Notes

the equivalent elastic section modulus shown in the tables is for the element that takes the largest stresses (lowest equivalent section modulus of the system),
if the king piles have a different steel grade than the infill sheets, then the stresses in both elements have to be checked separately (with two different equivalent elastic section modulus!!),
the infill sheet piles AZ are usually lighter and shorter than the king piles,
the fabrication of the CAZ box piles is quite expensive and time-consuming. It should only be done by experienced welders, based on a specific welding procedure.

Last modified: April 1, 2020

Metric units

Imperial units

AZ-700 and AZ-770

–


Combination	Properties
	b_sys	G₁₀₀	G₆₀	I_sys	W_sys
	mm	kg/m²	kg/m²	cm⁴/m	cm³/m

CAZ 13‑770 / AZ 13‑770	3 080	137	117	70 740	2 045
CAZ 13‑700 / AZ 13‑700	2 800	146	125	64 160	2 025
CAZ 18‑700 / AZ 13‑770	2 940	144	124	106 220	2 520
CAZ 18‑700 / AZ 13‑700	2 800	150	129	109 500	2 595
CAZ 18‑700 / AZ 18‑700	2 800	152	130	118 130	2 800
CAZ 26‑700 / AZ 13‑770	2 940	177	156	162 840	3 530
CAZ 26‑700 / AZ 13‑700	2 800	185	163	168 950	3 660
CAZ 26‑700 / AZ 18‑700	2 800	186	164	177 580	3 845
CAZ 38‑700N / AZ 13‑770	2 940	204	183	238 890	4 760
CAZ 38‑700N / AZ 13‑700	2 800	213	192	248 800	4 960
CAZ 38‑700N / AZ 18‑700	2 800	214	193	257 440	5 130
CAZ 44‑700N / AZ 13‑770	2 940	234	213	278 930	5 560
CAZ 44‑700N / AZ 13‑700	2 800	244	223	290 850	5 800
CAZ 44‑700N / AZ 18‑700	2 800	246	224	299 480	5 970
CAZ 50‑700 / AZ 13‑770	2 940	251	230	313 560	6 200
CAZ 50‑700 / AZ 18‑700	2 800	264	242	335 840	6 640
CAZ 50‑700 / AZ 20‑800	3 000	254	231	319 830	6 320

AZ-750

+

AZ-800

+

b_sys	System width
G₁₀₀	Mass with L_AZ = 100% of L_CAZ
G₆₀	Mass with L_AZ = 60% of L_CAZ
I_sys	Moment of inertia
W_sys	Equivalent elastic section modulus
L_AZ	Length AZ
L_CAZ	Length CAZ


Combination	Properties
	b_sys	G₁₀₀	G₆₀	I_sys	W_sys
	in	lb/ft²	lb/ft²	in⁴/ft	in³/ft

CAZ 13‑770 / AZ 13‑770	121.26	28.06	23.96	518.0	38.0
CAZ 13‑700 / AZ 13‑700	110.24	29.90	25.60	469.8	37.7
CAZ 18‑700 / AZ 13‑770	115.75	29.49	25.40	777.8	46.9
CAZ 18‑700 / AZ 13‑700	110.24	30.72	26.42	801.9	48.3
CAZ 18‑700 / AZ 18‑700	110.24	31.13	26.63	865.1	52.1
CAZ 26‑700 / AZ 13‑770	115.75	36.25	31.95	1 192.5	65.7
CAZ 26‑700 / AZ 13‑700	110.24	37.89	33.38	1 237.2	68.1
CAZ 26‑700 / AZ 18‑700	110.24	38.10	33.59	1 300.4	71.5
CAZ 38‑700N / AZ 13‑770	115.75	41.78	37.48	1 749.4	88.5
CAZ 38‑700N / AZ 13‑700	110.24	43.63	39.32	1 822.0	92.3
CAZ 38‑700N / AZ 18‑700	110.24	43.83	39.53	1 885.2	95.4
CAZ 44‑700N / AZ 13‑770	115.75	47.93	43.63	2 042.6	103.4
CAZ 44‑700N / AZ 13‑700	110.24	49.97	45.67	2 129.9	107.9
CAZ 44‑700N / AZ 18‑700	110.24	50.38	45.88	2 193.1	111.0
CAZ 50‑700 / AZ 13‑770	115.75	51.41	47.11	2 296.2	115.3
CAZ 50‑700 / AZ 18‑700	110.24	54.07	49.57	2 459.4	123.5
CAZ 50‑700 / AZ 20‑800	118.11	52.02	47.31	2 342.1	117.6


Combination	Properties
	b_sys	G₁₀₀	G₆₀	I_sys	W_sys
	in	lb/ft²	lb/ft²	in⁴/ft	in³/ft

CAZ 30‑750 / AZ 13‑770	119.69	36.25	32.16	1 504.7	74.7
CAZ 30‑750 / AZ 18‑700	114.17	37.89	33.59	1 623.9	80.6
CAZ 30‑750 / AZ 20‑800	122.05	37.07	32.36	1 564.4	77.7


Combination	Properties
	b_sys	G₁₀₀	G₆₀	I_sys	W_sys
	mm	kg/m²	kg/m²	cm⁴/m	cm³/m

CAZ 20‑800 / AZ 13‑770	3 140	148	129	129 580	2 870
CAZ 20‑800 / AZ 18‑700	3 000	156	135	141 780	3 140
CAZ 20‑800 / AZ 20‑800	3 200	153	131	138 910	3 075
CAZ 25‑800 / AZ 13‑770	3 140	163	144	165 330	3 470
CAZ 25‑800 / AZ 18‑700	3 000	171	151	179 200	3 760
CAZ 25‑800 / AZ 20‑800	3 200	168	146	173 990	3 650


Combination	Properties
	b_sys	G₁₀₀	G₆₀	I_sys	W_sys
	in	lb/ft²	lb/ft²	in⁴/ft	in³/ft

CAZ 20‑800 / AZ 13‑770	123.62	30.31	26.42	948.9	53.4
CAZ 20‑800 / AZ 18‑700	118.11	31.95	27.65	1 038.3	58.4
CAZ 20‑800 / AZ 20‑800	125.98	31.34	26.83	1 017.2	57.2
CAZ 25‑800 / AZ 13‑770	123.62	33.38	29.49	1 210.7	64.5
CAZ 25‑800 / AZ 18‑700	118.11	35.02	30.93	1 312.3	69.9
CAZ 25‑800 / AZ 20‑800	125.98	34.41	29.90	1 274.1	67.9

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Combined walls with CAZ box piles - CAZ/AZ

AZ-700 and AZ-770 –

AZ-750 +

AZ-800 +

AZ-700 and AZ-770

–

AZ-750

+

AZ-800

+