Arbil Glossary

 
 

Glossary

 

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C

C Hook

C Hook – A robust type of hook developed for use on construction sites that is designed not to entangle itself on scaffolding.

CHAIN – LONG LINK

Long link chain should not be used for lifting purposes and the pitch (inside length) can vary quite considerably (5-8 times) dependant upon the specification/manufacturer.

CHAIN – MIDDLE LINK

Middle link chain should not be used for lifting purposes and nominally has a pitch (inside length) equivalent to 4 times its diameter and an inside width equivalent to 1.5 times its diameter

CHAIN – SHORT LINK

Standard short link chain for lifting purposes nominally has a pitch (inside length) equivalent to 3 times its diameter and an inside width equivalent to 1.5 times its diameter

CHOKE LIFT

Most commonly associated with slinging, the choke lift takes place where in the absence of specific choke fittings, one eye of a sling or strop is passed through another to form a sliding choke action to grip the load. The transverse load on the sling always derates the lifting capacity by 20%.

Claw

A jack accessory which allows loads to be lifted from low heights –Jacks must have extended bases and claws work at 40% of the Jack’s capacity

CLUTCH, SHORTENING

Used specifically on short link lifting chain, shortening clutches are a safe and effective means of adjusting the lengths of sling legs

Collared Eyebolts

Collared Eyebolts should be used in conjunction with suitably sized shackles and may be used up to the marked safe working load (SWL) for axial lifting only. Collar eyebolts may be used for non-axial loading provided that the SWL is reduced by the appropriate factor (see tables 7 and 9; BS4278:1984.). In non-axial loading the load should be applied within ± 5° of the plane of the eye.

COMMERCIAL PATTERN THIMBLE

A light duty eyelet manufactured from crescent section for forming eyes on wire ropes

CWT (Hundred Weight)

There are 20 CWT in an Imperial Ton



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