Question: A single-acting steam hammer (Vulcan 08 model) is used to drive a 400 mm diameter and 20 m long precast concrete pile into the ground.

A single-acting steam hammer (Vulcan 08 model) is used to drive a 400 mm diameter and 20 m long precast concrete pile into the ground. The following data are recorded:
● Weight of ram = 35.6 kN
● Stroke (height of fall of the ram) = 1.0 m
● Maximum rated hammer energy = 35.6 kN?m
● Hammer efficiency = 0.8
● Coefficient of restitution = 0.4
● Weight of pile cap = 5 kN
● Number of blows recorded for the last 25 mm penetration = 6
● Unit weight of concrete = 24 kN/m³

Determine the allowable load for the pile, with a factor of safety of 4, using the modified ENR formula.

Step by Step Solution

★★★★★

3.47 Rating (163 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

Solution Here weight of pile W p Volume of pile x Unit weight of concre... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Principles Foundation Engineering Questions!

A diesel hammer (Delmag D12) with a maximum energy rating of 30.0 kN?m and hammer efficiency of 85% is used to drive a 15 m long concrete pile having a square cross section of 400 mm 3 400 mm. The...

Redo Problem 12.3 using Coyle and Castellos methods for estimating both Q p and Q s . Problem 12.3 A 500 mm diameter and 20 m long concrete pile is driven into a sand where = 18.5 kN/m 3 and ' = 32....

A 500 mm diameter and 20 m long concrete pile is driven into a sand where = 18.5 kN/m 3 and ' = 32. Assuming ' = 0.7' and K = 1.5 K o , determine the loadcarrying capacity of the pile, with a factor...

Who is chief knowledge officer? What the primary role? A senior executive in an organization responsible for ensuring that firm fully utilizes the value it gets through knowledge- which is the most...

Question 5 - 7 ( ANSWER ANY TWO * ) * - If you answer 3 , then best of 2 will be considered Q 5 . A square footing of size 3 m 3 m is founded at a depth of 2 m below the ground surface in a c - soil....

Perform the hourly cost calculation of a wheel tractor scraper, considering the tires separately. Initial purchase price of the equipment, including tires, is 1,400,000TL and the cost of a set of...

A pile is driven with a single acting steam hammer of weight 1 5 KN with a free fall of 9 0 0 mm , the average set value per below is 2 7 . 5 0 mm . Find safe load using Engineering news formula...

2 A steel-pipe pile is to be driven to an allowable load (design load) of 35 tons capacity by an MKT-11B3 double-acting steam hammer. The steel pipe has a net cross-sectional area of 17.12 in. and a...

1 0 - 1 0 . A steel - pipe pile is to be driven to an allowable load ( design load ) of 3 5 tons capacity by an MKT - 1 1 B 3 double - acting steam hammer. The steel pipe has a net cross - sectional...

Example 1 6 . 2 : A pile is driven with a single acting steam hammer of weight 1 5 kN with a free fall of 9 0 0 mm . The final set, the average of the last three blows, is 2 7 . 5 mm . Find the safe...

What are the filing statuses available to unmarried taxpayers? Which statuses are available only to married taxpayers?

Harold Warren incorporated Warren Enterprises Ltd. at the beginning of the current year by making a $100,000 cash contribution for common shares. In addition, using the provisions of ITA 85(1),...

A 1 - years gold futures contract is selling for $ 1 , 9 5 6 . Spot gold prices are $ 1 , 8 4 3 and the 1 - year risk - free rate is 6 % . The arbitrage profit implied by these prices is Multiple...

In Kraljics purchasing portfolio, under which headings, leverage, routine and bottleneck, would you place the following items? ( a ) chemical supplies for glass manufacture ( b) steel ( c) cleaning...

In the summer of 2002, a group of miners in Quecreek, Pennsylvania, became trapped 240 ft underground when a section of the coal seam they were working collapsed into an adjacent, but abandoned, mine...

Geothermal energy systems extract heat stored below the Earths crust. For every 300 ft below the surface, the temperature of groundwater increases by about 5F. Heat can be brought to the surface by...

A heat engine idealized as operating on the Carnot cycle is supplied with heat at the boiling point of water (212F), and it rejects heat at the freezing point of water (32F). If the engine produces...

Astro Co. sold 19,900 units of its only product and incurred a $49,148 loss (ignoring taxes) for the current year as shown here. During a planning session for year 2018's activities, the production...

Please answer the qeustion: In the output, no t-tests are significant at =0.05, but the F-test for regression has a p-value of approximately 0. The best explanation of these results is: O These...

a . Answer each of the following questions with a sentence or two. i . What is the difference between physical and virtual memory? ii . What is the difference between a thread and a process? iii.What...