Rough terrain cranes · load charts and rated capacity, outriggers fully extended and wheels off the ground, firm and graded ground with supporting materials, level indicator, boom angle indicator, anti-two-block and load moment devices under OSHA 1926 Subpart CC
A rough terrain crane is a mobile crane with a telescopic boom mounted on a rubber-tyred carrier built for off-road work on rough, uneven job sites, set on outriggers to lift. Ask three things first: what the load chart allows at your radii and boom lengths, how the outriggers and ground will carry the loads, and which safety devices and operational aids the crane has.
Rough terrain (RT) mobile cranes with telescopic booms on rubber-tyred carriers for construction and industrial sites, new or used. Truck cranes, all-terrain cranes, crawler cranes and tower cranes (separate product pages) are outside this page except where compared.
01
Under OSHA's cranes and derricks in construction standard, equipment must not be assembled or used unless ground conditions are firm, drained and graded enough that, with supporting materials such as blocking, mats or cribbing if needed, the manufacturer's specifications for adequate support and level are met; the controlling entity must provide the ground preparation and tell the user and operator of known hazards beneath the set-up area, such as voids, tanks and utilities. [1] When the load and radius require outriggers or stabilizers, or whenever they are used, outriggers must be fully extended or, if the manufacturer's procedures permit, deployed as specified in the load chart; they must be set to remove the equipment weight from the wheels; floats must be attached; each outrigger must be visible to the operator or a signal person during extension and setting; and blocking goes only under the float or pad. [2]
Editorial calculation: if one outrigger carries 30 t during a lift, it bears about 30 × 9.81 ≈ 294 kN; on ground allowed 200 kPa, the mat needs 294 / 200 ≈ 1.47 m², about 1.2 m × 1.2 m. Outrigger load and ground bearing pressure are assumed examples; take outrigger reactions from the manufacturer and bearing capacity from a site assessment.
Give the supplier the maximum loads with their radii and heights, boom and jib length needed, site conditions (gradient, ground bearing), travel needs on site and on road, outrigger spread and pad size, safety devices and operational aids required (level indicator, boom angle indicator, anti-two-block, load moment indicator or limiter), cab and operator standards, emissions and engine requirements, load chart format, new or used and year of manufacture, inspection records and documents.
02
The standard requires a crane level indicator, built in or available on the equipment, tagged out or removed if not working. [3] Among operational aids it requires a boom angle or radius indicator readable from the operator's station; anti-two-block devices on telescopic boom cranes manufactured after February 28, 1992 that automatically prevent contact between the load block or overhaul ball and the boom tip; and, on equipment manufactured after March 29, 2003 with a rated capacity over 6,000 lb, at least one of a load weighing device, load moment (rated capacity) indicator or load moment limiter. [4] Equipment must not be operated beyond its rated capacity, load charts and the operator's manual must be readily available in the cab, and the competent person must adjust for wind, ice and snow. [5]
Editorial note: for a used crane, the manufacture date decides which devices the rule requires; ask the seller for the year of manufacture, the load chart for the configuration you will use and evidence that each indicator and limiter works.
03
Suppliers linked to this page list rough terrain cranes; each card links to the page reviewed.
Listings include a crane maker's rough terrain crane range and a trading company listing rough terrain cranes with concrete and mining equipment. Ask each for the load chart, device list, year of manufacture and inspection records.
04
This is a functional reference built from the sources cited; it is not one maker's specification.
| System | Role | Fix in the order |
|---|---|---|
| Outriggers and floats | Lift wheels off ground; spread load. [2] | Spread, float size. |
| Telescopic boom | Reach and height per load chart. [4] [5] | Length, sections, jib. |
| Level indicator | Shows crane level. [3] | Built-in or removable. |
| Boom angle or radius indicator | Readable from operator's station. [4] | Indicator type. |
| Anti-two-block device | Prevents block contacting boom tip. [4] | Device type. |
| Load moment indicator or limiter | Monitors rated capacity. [4] | LMI or limiter. |
05
A rough terrain crane quotation needs values for your lifts. The table explains each field, gives published values where a reviewed source states them, and says what to obtain from the supplier.
| Field | What it means and published values | Ask the supplier for |
|---|---|---|
| Rated capacity | Must not be exceeded; load chart in cab. [5] | Load chart for your configuration. |
| Outrigger use | Fully extended or per chart; wheels off ground. [2] | Outrigger reactions. |
| Ground support | Firm, drained, graded; mats if needed. [1] | Pad sizes; ground pressure. |
| Anti-two-block | Telescopic booms built after 28 Feb 1992. [4] | Device and test. |
| Load weighing / LMI | After 29 Mar 2003, > 6,000 lb. [4] | Device type. |
| Level indicator | Required. [3] | Type. |
06
Paste it into your enquiry below or into an email to a maker, then replace every bracket.
Lifts: [loads; radii; heights] Boom: [length; jib] Site: [ground bearing; gradient; access] Outriggers: [spread; pads; mats] Devices: [level; boom angle; anti-two-block; LMI] Crane: [new or used; year; hours; inspection records]
These companies list rough terrain cranes.
Lists a rough-terrain crane range among its cranes.
Product scope checked 2026-10-11
Trading company listing rough terrain cranes with concrete and mining equipment.
Product scope checked 2026-10-11
Explore company information and manufacturing capabilities, then discuss the scope of your project with a relevant supplier.
OSHA 1926.1404(q) requires them fully extended or deployed as the load chart specifies, set to remove weight from the wheels, with floats attached. [2]
A level indicator, a boom angle or radius indicator, anti-two-block devices on telescopic booms built after February 28, 1992, and on cranes over 6,000 lb built after March 29, 2003 a load weighing or load moment device. [3] [4]
Firm, drained and graded enough, with supporting materials if needed, to meet the manufacturer's support and level specifications. [1]
Sources checked 2026-10-11. All sources are sections of OSHA's US federal standard for cranes and derricks in construction (29 CFR 1926 Subpart CC), cited from the eCFR text.
Ask for use case, specification boundaries, supplier type, and RFQ preparation information for this product.
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