ISO 8686-3:2018 PDF

Name: ISO 8686-3:2018 — Cranes — Design principles for loads and load combinations — Part 3: Tower cranes
SKU: ISO 8686-3:2018
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Cranes — Design principles for loads and load combinations — Part 3: Tower cranes

Название (английский):

ISO 8686-3:2018

Cranes — Design principles for loads and load combinations — Part 3: Tower cranes

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 23
Дата публикации:: 20 сентября 2018 г.
Издание:: ISO IS 8686 edition 2 version 1
ICS:: 53.020.20

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Описание (английский):

This document establishes the application of ISO 8686-1 to tower cranes for construction work as defined in ISO 4306-3, and gives specific requirements and values for factors to be used at the structural calculation. Tower cranes for construction work are exclusively equipped with a hook as the load-handling device. For tower cranes intended to be used for other purposes and/or with other load-handling devices, other values can be necessary according to the tower crane usage specification.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 8686-3:2018 - "Cranes - Design principles for loads and load combinations - Part 3: Tower cranes" specifies how to apply the general rules of ISO 8686-1 to tower cranes used for construction work (as defined in ISO 4306-3). It provides specific requirements and values for loads, dynamic factors and load combinations used in structural calculations, including rules for in-service and out-of-service wind, erection/dismantling, climbing systems and mobile self-erecting tower cranes. The standard assumes tower cranes fitted with a hook as the load‑handling device; alternative uses may require different values.

Key topics and requirements

Scope of application: Adapts ISO 8686-1 for tower cranes and integrates tower‑crane specific rules (rigid body stability, wind in out-of-service state, climbing systems).

Loads and classifications: Defines regular (A), occasional (B) and exceptional (C) load categories for design and verification.

Dynamic factors (ϕi): Guidance values for dynamic coefficients applied to hoisting, drive forces, inertial effects, and test loads. Example values from the standard:

a = 0.05 for tower crane structural considerations.
Hoisting unrestrained grounded load: for load combinations A1 and B1, ϕ2,max = 1.3.
Hoist drive classes: only HD1 or HD4 are allowed for tower cranes.

Wind loading:

Minimum in‑service wind pressure: q = 250 Pa (v = 20 m/s); for special load charts q = 125 Pa (v = 14.1 m/s).
Test wind pressure minimum: q = 40 Pa (v = 8 m/s).
Detailed treatment of out‑of‑service wind including empirical load cases to cover delayed slewing and turbulent sites.

Proofs and checks: Prescribes proof of strength, proof of stability (including rigid body stability), fatigue checks and load combinations for structural and support‑structure design.

Special cases: Loads during erection, dismantling, transport, access means, buffer forces, and hoist rope rupture or accidental load drop (use of ϕ = −0.3 for some stability/strength checks or dynamic analysis).

Applications and users

ISO 8686-3:2018 is intended for:

Tower crane manufacturers for design and load chart development.

Structural and mechanical engineers performing strength, stability and fatigue calculations.

Test laboratories and certification bodies conducting proof tests per ISO 4310.

Construction site managers, clients and safety engineers ensuring safe crane selection, siting and operational limits. Practical uses include structural calculation inputs, design verification, preparation of operating instructions and conformance to regulatory requirements.

Related standards

ISO 8686-1:2012 (general design principles for loads)

ISO 4302 (wind load assessment)

ISO 4306-3 (tower crane vocabulary)

ISO 4310 (test code and procedures)

ISO 20332 (proof of competence of steel structures)

ISO 12488-1 (tolerances for wheels and tracks)

Keywords: ISO 8686-3:2018, tower cranes, loads, load combinations, dynamic factors, structural calculation, out-of-service wind, proof of strength, proof of stability.

ISO 8686-3:2018 PDF

Abstract

Похожие стандарты

Overview

Key topics and requirements

Applications and users

Related standards

Технические детали

ISO 8686-1:2012

Cranes — Design principles for loads and load combinations — Part 1: General

ISO 8686-1:1989

Cranes — Design principles for loads and load combinations — Part 1: General

BS ISO 4306-3:2016

Cranes. Vocabulary. Tower cranes.

SIST ISO 4310:2012

Cranes - Test code and procedures

ISO 4302:1981

Cranes — Wind load assessment

ISO 20332:2008

Cranes — Proof of competence of steel structures

SIST ISO 12488-1:2015

Cranes - Tolerances for wheels and travel and traversing tracks - Part 1: General