WebType B soils include both cohesive and non-cohesive soils. They include silts, sandy loams, medium clays, and unstable rock. Soils that might be classified as A, but have fissures, or are subject to vibration, may also be classified as "B" soils. Type C soils are the most unstable (and therefore most dangerous) of the four soil types. WebType B Soil. Type B Soil can be defined as any of the following: Cohesive soil with an unconfined compressive strength greater than 0.5 tsf (48 kPa) but less than 1.5 tsf (144 kPa); or; Granular cohesionless soils including: Angular gravel (similar to crushed rock) Silt; Silt loam; Sandy loam; In some cases, silty clay loam and sandy clay loam.
AASHTO Soil Classification System - AASHTO Chart
WebClass 1, Class 2, or Class 3 materials used as lower trench fill except no stones or lumps of clay shall be retained on the 40mm test sieve as per the specification for highway works. Class 9A Cement stabilised well-graded granular material used for capping as per class 6E in the specification for highway works with the addition of cement ... WebJan 1, 2024 · 1. Granular Backfill Borrow, Classification A-1. Refer to AASHTO M145. a. Well-graded material. b. Maximum aggregate size is 1½ inches for plastic pipe, 2 inches … easycut 40
Structural Design of Clay Pipes CPDA
WebClass IVB and Class V materials offer only minimal support for a buried pipe and are often difficult to properly place and compact. Where the embedment material becomes … WebA 50m long rip-rap wall is to be estimated using Class B stone with Class C grout. List down the materials required including the weep hole drain pipe and the gravel backfill as granular soil filter. Using Class B grout: STONE CLASS A B C SAND; 40kg: 40kg: 40kg: Class A: 2.574 : 1.716 : 1.287 : 0.143 : Class B: 2.448 : 1.620 : 1.214 : 0.135 ... WebMar 4, 2016 · Different types of backfill materials are used in construction industry. Backfill materials that are commonly used are described below with their engineering properties. 1. Coarse-grained soils. Coarse-grained … easy cut and peel vinyl film