What is a 6A material?

What is a 6A material? 5B – Imported topsoil (Topsoiling) 6A – Selected well graded granular material (Below water) 6B – Selected coarse granular material (Starter layer) 6C – Selected uniformly graded granular material (Starter

What is a 6A material?

5B – Imported topsoil (Topsoiling) 6A – Selected well graded granular material (Below water) 6B – Selected coarse granular material (Starter layer) 6C – Selected uniformly graded granular material (Starter layer) 6D – Selected uniformly graded granular material (Starter layer below pulverised fuel ash)

What is class 6H granular material?

8.2. 2 Compaction requirements

Type Class Typical use
Selected granular fill 6H For reinforced soil and anchored earth structures
6I
6J
6K Corrugated steel buried structures

What is U2 unacceptable material?

(f) non-hazardous materials other than those permitted in Table 6/1 and Appendix 6/1. 3 Unacceptable material Class U2 shall be: (i) material having hazardous chemical or physical properties requiring special measures for its excavation, handling, storing, transportation, deposition and disposal.

What are the classification of earthworks?

In general earthwork can be classified into four broad categories: Initial clearance of vegetation and trees and stripping of top soil. Excavation to form trenches or pits, known as confined excavations. Cuttings, known as open excavations.

What is class U1A material?

Unacceptable (U1A) – materials that unless processed to meet the. geotechnical requirements of table 6/1 and App 6/1 shall not be. used in the works. ▪ Material which does not comply with the permitted constituents.

What is an earthworks specification?

7.1 Introduction. An earthworks specification must address: q. the provision of a well constructed excavation or placement site. forming a reliable platform for the subsequent fill operations.

What is type1 material?

Type 1 Sub Base is generally a 40mm graded to dust material that is laid and compacted to form a level stable construction layer as a platform for asphalt or concrete. It is typically used in the construction of highways, car parks, footways and hard standing areas.

What is class 3 fill material?

Class III: Clayey gravels and sands, poorly graded mixtures of gravel, sand, silt, and clay (GC, SC, and dual classifications, e.g., SP-SC): a.

What is unacceptable material class U1A?

What is 6N fill?

6N. Also known as Crushed Concrete, Brick Rubble. Size: 20mm to dust. Application: This aggregate consists of crushed concrete, brick and mortar. It’s created as a by-product from demolition projects and used as a backfill material for concrete structures such as bridge abutments.

What is U1B material?

Unacceptable (U1B) – contaminated materials that. unless processed to meet the requirements of table 6/1. and App 6/1 shall not be used in the works, incl. contaminants at concentrations > than permitted in App.