Honeywell COMBISAFE ESCALIB, Руководство пользователя, Страница: 12 / 17

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12
To make it easier to size the anchor points and ground bearing for the Escalib, the ground load
calculations and the forces at the anchor points are given for the various configurations.
If “d” is greater than 20 cm,
wind bracing may be required to
reinforce the anchor system.
Configuration 2 requires special
calculations.
For a given direction, forces from
both ways must be taken into
account.
Ground loads P+Q (daN)
Anchor points:
Configuration 1:
d ≤ 20 cm
Configuration 1:
20 cm < d < 2.00 m
Anchor
Anchor
Anchor
V
T
V
T
Anchor
d d
Stresses on the anchor points in configuration 1:
The results are presented at SLS. Wind
speeds are not weighted.
To calculate values for the ultimate limit
state, ULS:
1.5 x SLS
Base
1 module
Self-sup-
porting in
winds up to
120 km/h
2 mod-
ules
Self-sup-
porting
in winds
up to 72
km/h
3 mod-
ules
4 mod-
ules
5 mod-
ules
6 mod-
ules
7 mod-
ules
8 mod-
ules
Anchor points required every 3 modules for a wind speed
less than 145 km/h (for higher speeds see table 1).
Anchorage height
If the anchors used cannot withstand
the load calculated, increase the
number of anchor points.
Vp : 90 100 110 120 130 140 150 160 170 180 190 km/h
qp : 38 47 57 68 80 93 106 121 137 153 171 daN/m²
Vitesse dynamique
de pointe du vent (km/h)
Cisaillement : V
V (daN
)
900
800
700
600
500
400
300
200
100
Vp : 90 100 110 120 130 140 150 160 170 180 190 km/h
Arrachement
(T) (daN
)
550
450
350
250
150
50
qp : 38 47 57 68 80 93 106 121 137 153 171 daN/m²
Shearing stresses (V) :
Anchor
Escalib point density
height Every 3 Every 2
modules modules
7-8 modules
5-6 modules
3-4 modules
1-2 modules
Pullout forces (T) :
Number of modules 1 2 3 4 5 6 7 8
Max. load per foot 673 1050 1244 1339 1434 1529 1624 1719
Total load 1379 2355 2999 3379 3759 4139 4519 4899
Ground loads:
Assumptions:
I - Wind action as in EN 1991-1-4:
- f = 0.23 and Cf = 2.73
- vp : Wind speed (km/h).
- qp : Peak wind pressure (daN/m²).
2 - Working load Q:
- 8 persons per Escalib module.
- Up to a maximum of 20 for the complete
stair tower.
- Stair tower not to be used for winds of over
65 km/h.
3 - Weight (P) of Escalib..
(T
) (daN)
(V
) (daN)
If a net (
φ
= 20%) covers
the Escalib, consider a
pressure qp multiplied
by 1.4.
ANCHORAGE
module 8
module 7
module 6
module 5
module 4
module 3
module 2
module 1