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40069 Zola Predosa (BO) – ITALY Tel: +39 051 6436000 Fax: +39 051 6436201

Web Site: www.officinemaccaferri.com

HIGH RESISTANCE ROCKFALL BARRIER

(750kJ) RB 750

DESIGN LOADS AND STANDARD FOUNDATIONS

UPDATE / REVISION NR. CHANGE / REVISION DESCRIPTION DATE / SIGNATURE

Rev. 0 - February 27th 2014

REPLACES

DATE

REPLACED BY

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SIGNATURE

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DRAWN CHECKED ON APPROVED SCALE

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* The flexible anchor is manufactured with a spiral wire rope ϕ 16 mm (1x19) having a grade of minimum 1570 N/mm2 and a minimum breaking load of 211 kN according to EN 12385-10, and Zinc coated in accordance with EN 10264-2 (Class A). The part exposed to the atmospheric agents (i.e. the loop) is protected with INOX-304 steel pipe and equipped with a thimble.

NOTES: 1) The design loads indicated in the table above are the peak forces recorded on the cables and/or on the foundations

during the MEL (Maximum Energy Level) full-scale crash test carried out according to ETAG 027. 2) Foundations shown are the standard options supplied with the kit, designed on the basis of assumed general

conditions. The characteristics of the foundations, in particular the length and the drilling diameter, can be modified and specifically designed in case of particular ground conditions and needs.

3) All foundations used on a project should however be checked for suitability and approved for use by the project

engineer in accordance with the relevant procedures, standards, laws etc. Maccaferri reserves the right to amend product specifications without notice and designers are requested to check the validity of the specifications they are using.

NOMINAL ENERGY LEVEL 750 kJ Model RB 750 Foundations

Design Loads (based on data recorded during the MEL test)

Tensile force on lateral foundations - (max value) 188.3 kN

Tensile force on upslope foundations - (max value) 77.7 kN

Compressive force at the base of the posts - (max value) 96.9 kN

Shear force at the base of the posts - (max value) 80.5 kN

Quantity of foundations Quantity of lateral foundations (per stretch) n.2

Quantity of upslope foundations (per stretch) n.1 per post + n.1

Characteristics of standard foundations Foundations - Case SOIL

Lateral anchor (drilling diam., length, type) 114 mm, 4.0 m, double spiral cable ϕ 16 mm *

Upslope anchor (drilling diam., length, type) 90 mm, 3.0 m, double spiral cable ϕ 16 mm *

Rod bars for base plate (drilling diam., length, n., type) 70 mm, 3.0 m, n.2 rod bars (steel B450C) ϕ 24 mm

or Micropile for base plate (drilling diam., length, n., type)

or 100 mm, 3.0 m, n.1 x diam. 76.1 mm - th. 6.3 mm

Foundations - Case ROCK

Lateral anchor (drilling diam., length, type) 90 mm, 3.0 m, double spiral cable ϕ 16 mm *

Upslope anchor (drilling diam., length, type) 70 mm, 2.0 m, double spiral cable ϕ 16 mm *

Rod bars for base plate (drilling diam., length, n., type) 60 mm, 2.0 m, n.2 rod bars (steel B450C) ϕ 24 mm

or Micropile for base plate (drilling diam., length, n., type)

or 100 mm, 2.0 m, n.1 x diam. 76.1 mm - th. 6.3 mm