INTERIM REPORT

NCD/IR/SGT/035/2022	21st February 2023

SPACE GEO TECH

"Sri Guru Krupa", #985,

18th A Main, 66th Cross,

5th Block, Rajajinagar,

Bangalore - 560010

Sub :	Geotechnical investigation for the proposed UPSIDC Mega Food Park Baheri Bareily

Dear Sir,

This has reference to the above-mentioned job for which field investigations have been completed and the laboratory testing of the soil samples is under progressed. In the meantime, an interim report based on the field investigations, is being submitted as per your urgent requirement.

The stipulated scope of work consisted of conducting boreholes down to 10m depth at twenty locations. However, one borehole had been conducted down to 13m depth at our own.

The subsoil investigations indicate that the subsoil strata consists of clayey sandy silt / sandy clayey silt down to about 2.5m depth below the existing ground level beyond which the subsoil strata generally consists of sandy soils down to the maximum depth investigated i.e 13m below the existing ground level. The categorisation of silty soils and sandy soils has been done on the basis of the field observations and the same shall be confirmed after the detailed laboratory investigations.

Ground water table had been encountered at a depth varying between 1.7m and 2.5m below the existing ground level in the boreholes, during the period of field investigations.

The standard penetration test values (N-values) vary between 2 and 28. The observed N-values indicate that the subsoil is in a loose to medium dense state down to about 10m depth below which the subsoil is in a medium dense state down to the maximum depth investigated.

The proposed structures are Factory buildings. Considering this, medium heavy loads can be anticipated on the foundations.

Based on the above results and the probable loads on the foundations, the following recommendations are being made.

Liquefaction Analysis :

Considering the subsoil strata consisting of poorly graded sandy soils beyond 2.5m depth down to the maximum depth investigated, the subsoil strata being in a loose to medium dense state down to about 10m depth, the presence of ground water table level at a shallow depth of about 2m below the existing ground level and the site is located in the seismic zone IV (i.e. High Seismic Intensity) of Seismic Zoning Map of India, the subsoil strata down to 10m depth can prima facie be considered to be susceptible to liquefaction. During the monsoon, the possibility of a rise in the ground water table level cannot be ruled out. Hence, shallow foundations are not feasible, the structures shall have to be supported over Straight Bored Pile Foundations.

Recommendations :

As the pile capacities analysis cannot be done due to insufficient available subsoil data on account of inadequate depth of present investigations, recommendations have not been provided in this report.

Considering the above statement and also subsoil strata susceptible to liquefaction down to about10m depth, fresh borehole investigations down to 20m depth shall have to be carried out to provide the pile foundation recommendations.

We hope you find this in order.

Thanking you,

Yours sincerely,

Y.S. Rana

Executive Consultant