TIE PLATE TOWERS - INDUSTRIAS JOVIR, S.L.

Imprimir

Tie plate towers with a nominal stress of 400, 750, 1250 and 1400 daN consist of four corner profiles with faces symmetrically arranged on the four vertices of a square, which give shape to the mast section.
These four pieces are joined together by welded tie plates.
The head, whose measurements and tolerances can be seen on the diagram enclosed, have a prismatic section measuring 6m in length and 320 mm on the side, which corresponds to the total space for mounting fittings, cross-bars, etc. after this section, the rest of the mast has a truncated pyramidal shape with a square base.

STRESSES IN TIE PLATE TOWERS
The following table shows the stress values for these towers, which correspond to the workload plus the overload, expressed in daN and applied on the top of the head.
The overload due to the wind must be simultaneously applied to these stresses.

Support daN	Fu C.S. = 1,5	Fur C.S. = 1,875	V C.S. = 1,5
P 400	400	320	300
P 750	750	600	400
P 1250	1250	1000	500
P 1400	1400	1120	600

Fu = Useful transversal stress.
Fur = Useful transversal stress with admissible vertical reinforced safety.
V = Vertical reinforced safety.

WEIGHT & BASE WIDTH OF TIE PLATE TOWERS

Height (m)	Base width	Weight (Kg) P400	Weight (Kg) P750	Weight (Kg) P1200	Weight (Kg) P1400
10	560	186	233	287	369
12	620	232	287	359	459
14	690	282	342	452	583
16	760	336	402	550	713
18	820	375	469	650	809
20	886	458	564	805	999

TIE PLATE TOWERS FOUNDATIONS

MODEL	H TOTAL (m)	K=8 h (m)	K=8 a (m)	K=8 v (m3)	K=12 h (m)	K=12 a (m)	K=12 v (m3)	K=16 h (m)	K=16 a (m)	K=16 v (m3)
P 400	10	1.59	0.75	0.9	1.44	0.75	0.81	1.34	0.75	0.76
P 400	12	1.62	0.82	1.09	1.47	0.82	0.99	1.37	0.82	0.92
P 400	14	1.65	0.89	1.31	1.50	0.89	1.19	1.40	0.89	1.11
P 400	16	1.67	0.96	1.54	1.52	0.96	1.40	1.41	0.96	1.30
P 400	18	1.69	1.02	1.76	1.54	1.02	1.60	1.43	1.02	1.49
P 400	20	1.70	1.09	2.00	1.55	1.09	1.83	1.44	1.09	1.70
P 750	10	1.87	0.75	1.05	1.70	0.75	0.96	1.58	0.75	0.89
P 750	12	1.92	0.82	1.29	1.74	0.82	1.17	1.62	0.82	1.09
P 750	14	1.95	0.89	1.54	1.77	0.89	1.40	1.65	0.89	1.31
P 750	16	1.98	0.96	1.82	1.80	0.96	1.66	1.68	0.96	1.55
P 750	18	2.00	1.02	2.08	1.82	1.02	1.89	1.70	1.02	1.77
P 750	20	2.02	1.09	2.38	1.84	1.09	2.17	1.71	1.09	2.02
P 1250	10	2.13	0.75	1.20	1.94	0.75	1.09	1.80	0.75	1.02
P 1250	12	2.18	0.82	1.47	1.98	0.82	1.33	1.85	0.82	1.24
P 1250	14	2.23	0.89	1.77	2.02	0.89	1.6	1.88	0.89	1.49
P 1250	16	2.26	0.96	2.08	2.05	0.96	1.89	1.91	0.96	1.76
P 1250	18	2.29	1.02	2.38	2.08	1.02	2.16	1.94	1.02	2.02
P 1250	20	2.31	1.09	2.72	2.10	1.09	2.48	1.96	1.09	2.31
P 1400	10	2.20	0.75	1.24	1.99	0.75	1.12	1.85	0.75	1.04
P 1400	12	2.25	0.82	1.51	2.04	0.82	1.37	1.9	0.82	1.28
P 1400	14	2.29	0.89	1.81	2.08	0.89	1.65	1.94	0.89	1.54
P 1400	16	2.33	0.96	2.15	2.11	0.96	1.94	1.97	0.96	1.82
P 1400	18	2.36	1.02	2.46	2.14	1.02	2.23	2.00	1.02	2.08
P 1400	20	2.38	1.09	2.81	2.16	1.09	2.55	2.02	1.09	2.38

On the table enclosed the foundations required are given depending on if the terrain is soft, normal or rocky, defined by an average compressibility coefficient or for a depth of two metres of 8, 12 and 16 Kg/cm3 respectively. These foundations have been proven against falling with the Sulzberger formula with a 1.5 factor of safety.
Verifying that 1,5 Mv ≤ M1 + M2
Where:
M1= 0,278 Kah3
M2= 0,4 Pa
For:
K= 8 Kg/cm3 (soft terrain)
K= 12 Kg/cm3 (normal terrain)
K= 16 Kg/cm3 (rocky terrain)

HEAD FOR TIE PLATE TOWERS. MEASUREMENTS & TOLERANCE.
Head for mast type P 400, 750, 1250 y 1400 daN.
Greater heights may be manufactured to order.