2 inch Automatic Trip Hammer SPT Sampler for Lithological Description

2 inch Automatic Trip Hammer SPT Sampler for Lithological Description

The standard penetration test (SPT) is an in-situ dynamic penetration test designed to provide information on the geotechnical engineering properties of soil. The test procedure is described in the British Standard BS EN ISO 22476-3, ASTM D1586 and Australian Standards AS 1289.6.3.1. A detailed description of SPT test and procedure can be found on the geotechnical data

Procedure

The test uses a thick-walled sample tube, with an outside diameter of 50 mm and an inside diameter of 35 mm, and a length of around 650 mm. This is driven into the ground at the bottom of a borehole by blows from a slide hammer with a weight of 63.5 kg (140 lb) falling through a distance of 760 mm (30 in). The sample tube is driven 150 mm into the ground and then the number of blows needed for the tube to penetrate each 150 mm (6 in) up to a depth of 450 mm (18 in) is recorded. The sum of the number of blows required for the second and third 6 in. of penetration is termed the "standard penetration resistance" or the "N-value". In cases where 50 blows are insufficient to advance it through a 150 mm (6 in) interval the penetration after 50 blows is recorded. The blow count provides an indication of the density of the ground, and it is used in many empirical geotechnical engineering formulae.

Purpose

The main purpose of the test is to provide an indication of the relative density of granular deposits, such as sands and gravels from which it is virtually impossible to obtain undisturbed samples. The great merit of the test, and the main reason for its widespread use is that it is simple and inexpensive. The soil strength parameters which can be inferred are approximate, but may give a useful guide in ground conditions where it may not be possible to obtain borehole samples of adequate quality like gravels, sands, silts, clay containing sand or gravel and weak rock. In conditions where the quality of the undisturbed sample is suspect, e.g. very silty or very sandy clays, or hard clays, it is often advantageous to alternate the sampling with standard penetration tests to check the strength. If the samples are found to be unacceptably disturbed, it may be necessary to use a different method for measuring strength like the plate test. When the test is carried out in granular soils below groundwater level, the soil may become loosened. In certain circumstances, it can be useful to continue driving the sampler beyond the distance specified, adding further drilling rods as necessary. Although this is not a standard penetration test, and should not be regarded as such, it may at least give an indication as to whether the deposit is really as loose as the standard test may indicate.

Detailed Product Description:

SPT Auto Trip Hammer is produced complying with the Standard Penetration Test (SPT) to BS 1377: Part 9: 1990.

The Automatic Trip Hammer is manufactured for complying with the Standard Penetration Test (SPT) to BS 1377: Part 9: 1990. SPT Drive Rods and a Split Tube Sampler are connected to base of the anvil, and driven into the ground by the falling weight.

The Automatic Trip Hammer comprises a weight of 63.5 kg complete with pick-up and self-tripping mechanism that ensures that the weight has a free-fall of exactly 760 mm. The inner shaft acts as a guide that permits the weight to drop with minimal resistance and ensures that the weight strikes the anvil squarely.

The SPT anvil thread usually is processed with a 1.1/2" B.S. whitworth to fit our standard SPT rods. Adaptors to other types of drill rod can be supplied on request. The overall length of the hammer is 2.6 m extended and 1.8 m when unextended. The total weight of the hammer is 110 kg.

Automatic Trip Hammer:

The Automatic Trip Hammer is designed for driving the Split Tube Sampler and conforms to the requirements of BS 1377: Part 9: 1990 for carrying out the Standard Penetration Test (SPT) or Super Heavy Dynamic Probing (DPSH).

The hammer consists of a weight of 63.5 kg complete with pick-up and self-tripping mechanism that ensures that the weight has a free-fall of exactly 760 mm.

The inner shaft acts as a guide that permits the weight to drop with minimal resistance and ensures that the weight strikes the anvil squarely.

The drive rods screw securely into the base of the anvil, which is supplied with either a 1.1/2" B.S. whitworth or BW rod box connection.

The hammer is supplied with a safety cross bolt which secures the sliding outer sleeve to the inner guide rod when the hammer is not in use or during transport.

The overall length of the hammer is 1.8 m unextended and 2.6 m when fully extended. The total weight of the hammer is 105 kg

The following spare parts are available:

Anvil
Weight
Pawls, Springs & Axles
Guide Rod
Outer Tube Assembly
Safety Cross Bolt
Seloc Pin (to secure anvil to guide rod)

Keywords:

SPT hammer
SPT hammer types
SPT hammer efficiency
SPT hammer weight
SPT hammer anvil
SPT hammer calibration
SPT hammer efficiency factors
SPT hammer energy measurements
spt hammer types
automatic spt hammer
spt hammer weight
spt hammer calibration
spt n values
spt energy
spt correction
automatic hammer
Standard Penetration Test
SPT Hammer Calibration
Spt Hammer, Spt Hammer Suppliers and Manufacturers
SPT Hammer Calibration
SPT Automatic Hammmer
Drilling World
Automatic SPT Hammer
SPT: Standard Penetration Test Energy Calibration
Standard penetration test
CME Automatic Hammer Operations Bulletin DSO-99-03
Evaluation of SPT energy for Donut and Safety hammers
SPT Hammer Energy Ratio versus Drop Height
SPT Energy Measurements: Manual vs. Automatic Hammer
Standard Penetration Test (SPT) Correction
Auto Standard Penetration Test (SPT) Hammers
SPT Automatic Drop Hammer: Environmental, Geophysical
Auto Hammer
Energy Efficiency and Rod Length Effect in SPT Drilling
Evaluation of SPT Hammer Energy Variability
NOTES on the STANDARD PENETRATION TEST
UT100 and SPT Hammers
Drilling Supplies
Spt Automatic Trip Hammer, Spt Tools
standard penetration test, SPT
Standard Penetration Testing Tools
Geoprobe Systems
Automatic Spt Hammer
Hydraulic Spt Hammer, Hydraulic Spt Hammer
Calibration
Geotechnical Drilling
Automatic SPT Hammer,SPT Hammer Types manufacturer
Drilling Services,SPT Calibrations
NCDOT SPT HAMMER ENERGY MEASUREMENT
Hydraulic Spt Hammer, Hydraulic Spt Hammer
SPT Hammer Energy Ratio versus Drop Height
SPT hammer, high quality Manufacturers,Suppliers
SPT Automatic Hammer Efficiency Revisited
SPT Hammer, SPT Automatic Trip Hammer
SPT AUTO TRIP HAMMER - KUVAWALA CORE DRILL
Standard Test Method for Standard Penetration Test (SPT soil sampling)
Soil Sampling Tools - Drilling World
SPT Hammer Energy Ratio versus Drop Height
Spt Hammer - Spt Hammer Manufacturers, Suppliers
1.8m - 2.6m Automatic SPT Hammer Standard Penetration
Effect of SPT Hammer Energy Efficiency in the Bearing
Spt Hammer Complete
Evaluation of SPT energy for Donut and Safety hammers
GRL Services SPT Hammer Calibration
DH66 Automatic Drop Hammer
Automatic SPT Hammer,Soil testing engineering
Geotechnical Drilling
Mobile Drill Tooling Catalog UPDATED 2015 Reduced
SPT Hammer Energy Analyser
DH66 Automatic Drop Hammer
Spt Hammer Exporters, Spt Hammer Selling Leads
China SPT Hammer - China Spt Hammer, Drilling Tools
EVALUATION OF THE CONE PENETROMETER TEST FOR SPT .
China Soil Testing Spt Automatic Trip Hammer Complete
SPT Hammer Energy Measurement
SPT Hammer Energy Measurements
STANDARD PENETRATION TEST
Subsurface Exploration Using the Standard Penetration Test and the Cone Penetrometer Test
Subsurface Exploration Using the Standard Penetration Test
Site Exploration, Site Characterization, Subsurface Exploration, Drilling, Standard Penetration Test, Cone Penetrometer
The Standard Penetration Test (SPT) and Cone Penetrometer Test (CPT) have become industry standards for subsurface geotechnical investigations using small diameter (<8-in. [20-cm]) borings and soundings. Both procedures have evolved over a period of 100 and 70 years, respectively, and have been adopted as ASTM standards. Each procedure has certain advantages over the other, but both can elicit incorrect data under particular subsurface conditions that are often overlooked, depending on the experience of field personnel operating or logging the tests. This paper seeks to explain the operative assumptions employed in both procedures, highlight the various corrections that are commonly employed, and warn the reader of common errors in interpretation.
The article concludes by stating that, under most conditions, the joint employment of SPT and CPT together has the greatest potential for characterizing sites correctly.
ASTM D1586 - 11
Standard Test Method for Standard Penetration Test (SPT) and Split-Barrel Sampling of Soils

FAQ

Terms & Conditions of Ordering:

Quality warranty:
Our products are made of high quality steel and all spares parts are inspected strictly before shipping. We have quickly responses for your complaint and suggestion.

Package:
Using ply-wooden cases and pallet for package to protect the products and avoid the damage during transportation. Also we can customize package according to your special requests.

Production time:
Generally need 15-25 days

Transportation:
By air, By Express or By sea according to your requests.

1. Methods of Payment:
T/T (Telegraphic Transfer) or Western Union or L/C at sight

2. Handling time for an order
Based on order quantity, normally it takes 20 days for production.
in 3 working days after receiving the advance payment

3. Shipping way
Sample order: we suggest Courier express like DHL/UPS/TNT/FEDEX or by air
Bulk order: we suggest by air or by sea.

4. Quality Control
We have our own experienced QC.
There will be strict inspection and testing for every order before shipping out.

5. After Services:
a. Our sales team will response for your question within 24 hours (Holidays Excluded)
b. Technical Support will be available in any time

6. Quality & Service:
A. There will be strict inspection and testing for every order before shipping out.
B. Our sales team and Technical Support will response for your question within 24 hours through skype: ROSCHEN.TOOL and WhatsApp/Wechat: +86-13764195009
C. Free replacement will provide once the failure confirmed caused or our product quality; Not satisfied with a refund.

For more information, please contact:

ROSCHEN INC.
ROSCHEN GROUP LIMITED
ROSCHEN HOLDINGS LIMITED

Skype: ROSCHEN.TOOL , ROSCHEN_GROUP

WeChat: +86-137 6419 5009 ; +86-135 8585 5390

WhatsApp: +86-137 6419 5009 ; +86-135 8585 5390

Email: roschen@roschen.com ; roschen@roschen.net

Website: http://www.roschen.com ; http://www.roschen.net

http://www.roschen.cn ; http://www.roschendrill.com

 ROSCHEN GROUP

ROSCHEN Group has the world class advanced equipment like 12000 tons forging, metal processing plant, heat treatment workshop, numerical control plant, Advanced five-axis machining center, etc. professional technical and skilled team to ensure mining, mineral tools, equipment products quality stable and reliable.

ROSCHEN Group Limited is a manufactory with years of research and development for the mining, mineral tools, equipment. We are capability to produce high performance world class products and control excellent quality. Our main product includes tricone bit, diamond core bits, drill pipe, core barrel, TCI tricone bit, mill tooth tricone bit, RC hammer, DTH bit, etc.

ROSCHEN Manufactory PROCESS

ROSCHEN Sales Value Growing Up!

ROSCHEN'S MISSION

1. Strive to create and supply Best quality products for the industry that last longer than the average products.

2. Provide excellent service for our clients.  24 hour-7 days /week schedule to get our clients what they need – FAST.