Our site uses cookies necessary for its proper functioning. To improve your experience, other cookies may be used: you can choose to disable them. This can be changed at any time via the Cookies link at the bottom of the page.


The Reclamation E' Table

 

Howard

Plastic Pipe Design # 2006 Washington DC

The Reclamation table of E′ (Modulus of Soil Reaction) values for use in estimating the deflection of buried flexible pipe was first published in 1977. The E′ value represents the stiffness of the embedment soil placed on the sides of the pipe. The table gave E′ values that depended on soil classification and placement density. A new 2006 Reclamation Table of E′ values is presented as a revised and updated version of the 1977 table. The 2006 E′ table is based on vertical deflections, rather than horizontal deflections, and on new data. The new table has been slightly reorganized, soil classifications updated, and the crushed rock category clarified. A composite E′, based on both the embedment soil and trench wall material, can be used when very stiff or very weak trench walls are encountered. The Reclamation Equation was used to develop the E′ values. Accordingly, the E′ values should be used only with the Reclamation Equation to estimate the vertical deflection of flexible pipe.

Please note that the whole article content is available on PPCA website only


Related papers

2021 Amsterdam : FLOWABLE FILL FOR PLASTIC PIPE

Author(s) : Amster Howard

Flowable fill is used for many applications, but mainly for pipe trench embedment and backfill. There are three ways that using flowable fill can be kind to the environment. Because flowable fill is self-leveling and has a strength greater than the native soil, the trench cross section can be minimized. This means...

2021 Amsterdam : Sustainability is achieved through less time for excavation, less handling of soil excavated from trench, less hauling of materials (both to and from construction sites), and reuse and recycling. This all means less energy consumption: In many cases, thes

Author(s) : Amster Howard

Deeper pipe burial, less expensive and environmentally friendly backfill, uniform language for contractors and inspectors, simplified installations for smaller pipe, and allowable construction in poor soil conditions are highlights in the latest edition of AWWA M55 and all benefit the users of HDPE pressure pipe. This...

Members of the Association

BOREALISBOROUGEFormosa Plastics CorporationINEOS O&PIRPCKazanorgsintez PJSCKorea Petrochemical IND. Co., LTD (KPIC)LyondellBasellPetroChina Dushanzi Petrochemical CompanyPRIME POLYMERSABICSCG Chemicals & Thai PolyethyleneSinopecTASNEE
Webinar : Benefits of PE100+ Material and their use in Trenchless TechnologyWebinar : Benefits of PE100+ Material and their use in Trenchless Technology

On march 10th, was held the PE 100+ ASSOCIATION first webinar. The webinar was a great success and attracted a large audience. 

TOP