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Depending on their purpose, rock anchors may be temporary or permanent, and may be passive or post-tensioned (sometimes referred to as pre-stressed).

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Tunnels and underground excavations -

Tunnels and underground excavations: Tunnels and underground excavations, horizontal underground passageway produced by excavation or occasionally by nature's action in dissolving a soluble rock.

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07- Railway Tunnels : Subterranean Sydney : LITTLE KNOWN TUNNELS Sydney has a number of little known railway tunnels. The oldest one was built under George Street in 1855 from the Sydney Railway Yard to Darling Harbour.

751.50 Standard Detailing Notes - Engineering Policy Guide

Class B Concrete (Substructure) f'c = 3,000 psi Class B Concrete (Retaining Wall) f'c = 3,000 psi Class B-2 Concrete (Drilled Shafts & Rock Sockets)

VSL | Ground anchors | Strand anchors | Bar anchors

VSL's products and services. VSL can supply and install a range of ground anchors: Soil nails and rock bolts (generally short and unstressed) Strand and bar anchors (generally longer, stressed or unstressed)

List of ASTM International standards - Wikipedia

This is a list of ASTM International standards. Standard designations usually consist of a letter prefix and a sequentially assigned number. This may optionally be followed by a dash and the last two digits of the year in which the standard was adopted.

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Bars & post-tensioning bar systems. VSL bar systems provides great versatility in geotechnical and construction applications as they cover a full range from hot-rolled bars with grades of 500MPa and 670MPa through to high-tensile alloy steel stressbars up to 1,050MPa.

Deep foundation - Wikipedia

A deep foundation is a type of foundation that transfers building loads to the earth farther down from the surface than a shallow foundation does to a subsurface layer or a range of depths.

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Standard Specifications for Construction of Roads and Bridges on Federal Highway Projects

Physical Address - Scaw Metals Group

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Section Trade Page Item Description Uom Quantity Time Fixed Value Rate 1 PRELIMINARIES 2 PREAMBLES FOR TRADES 0.00 The Model Preambles for Trades (2008 edition) as published by the Association of South African Quantity Surveyors shall be deemed to be incorporated in these bills of quantities and no claims arising from brevity of description of items fully described in

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0 - 9; Title Description Price Rating ; 2D Frame Analysis Dynamic Edition: This application uses a highly flexible, general, finite element method for static and dynamic analysis of multi span beams, 2D trusses and 2D frames.


Bolts shall be securely tightened against the tray surface to avoid projections which might damage cables during installation. ... Very hard rock shall mean rock that ...

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Structural Engineering Books - Structural Drafting

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UpCodes offers a consolidated resource of construction and building code grouped by jurisdiction.