US2373885A - Method of cementitiously casing submerged piling - Google Patents

Description

Aprll 17, 1945'.4 H.`GAST ET Al.

METHOD OF CEMENTITIOUSLY CASING SUBMERGED FILING Filed March e, 1944 2 Sheets-Sheet l 7,/ y l IN1 'EN T0125 l roeA/Ex April 17, 1945. H. GAST ET AL.

METHOD OF CEMENTITIOUSLY CASING SUBMERGED FILING Filed Marh 6, 1944 2 Sheets-Sheet 2 l /QlIl/E'/TOR. y 7; w. 7W @m cz. m

rraQA/Ex Patented pr. 17, 1945 UBMERGED PILING Harry Gastllos Angeles, and Frank W Inglewood, Galif.'

. Freeman,y

'Appliqati'on Maren s, 194.4, seriarNo. 525,296

(o1. eig-54) 19 Claims.

This invention relates to amethod of protecting and reinforcing submerged wood piling. f

well known, submerged wood piling'- deteriorates above the formation into which it is driven and it becomes necessary either to cprotect and reinforce the'V weakened piling or replacey it.

' It has been found that the most satisfactory way of protecting and reinforcing such piling has been to apply a protective casing of'cementitious material to the lexterior of the pilingfrom the formation upwardly to.A a point above the water line.

. However, prior to our invention.. no satisfactory method of applying an effective cementitious reinforcing casing to submerged wood piling has been produced. y

Our invention has for itsprinci'pal object the provision of an efficient. method of expeditiously applying an effective reinforcingand protecting casing of cementitious material to .submerged wood piling.

In carrying our invention into practice, we form a cementitious reinforced casing inr successive steps directly on the piling adjacent its upper end and lower'the casing downwardly asrit isy Fig. Sis a view of the reinforcing means employed for each section of casing, and disclosing the manner in which it is arranged on the form.

4 is a view in elevation and'n vsection of th first completed section of the casing.

Fig. 5 is a cross-sectional view taken online 5-5 of Fig. 4. 4

Fig. 6 is a similar view showing ,the first section of the casing lowered from the form so that the succeeding section may be produced."

'7 is a view similar to'Fig. 6` 'showing the second section completed and joined to the rst section. v M f Referring'more particularly to the accompanying drawings,4 we have there illustrated the* preferred manner of practicing our-invention. In the drawings.. I0 indicates a wharf or quay supported on-wood piling I I driveninto the formation I 2. `Byway of example, 'we indicate a water line at I4 and a mud yline aty I5. We rintend that a any other desired manner.

`unita-ryl y'reinforced cementitious casing 'I6 be placed over the pile I I between the forrriationk I2 and a point a distance above the water line |4` to protect and reinforce thepile `I I. p

To accomplish this we construct a cylindrical form I'I eoncentrically around the pile above the water line I4. This form Il is preferably. formed of sheet metal, althoughother materials may be used, and itis of a. diameter approximately four inches greaterl than the diameter of the` pile. The lower end ofthe cylindrical form I1 maybe slightly less in diameter thanv its upper end .to provide draft sufficient to enable a cementitious tubular easing .section formed thereon to be more easily lowered 'off of the form' I1. vThe form I1 may be suspended fromthe wharf by suspension cables or chains I8, or it may be held in place in Spacing cleats I9 are disposed between the interior of theform I1 and the pile II to maintain the form concentrie cally of the pile.

To construct the cementitious casing aboutfthe pile we vpropose to form the casing IBin-tubular sections somewhat less in length than the length of the form I?. form be sixfeet, althoughother lengths maybe used. Each tubular section Ia is formed on the form I'I and then lowered with respect to the form I1 to a point where the upper kendof the tubular section is telescoped .over the lower extremity of the form, as illustratedin the drawings. This is so that the upper end of the section ISa so formed may be joined to the succeeding tubular section constructed on the form I1.

Each tubular section Ita of the casing is rein-rl forced by a steel reinforcing fabric 20` embedded therein during theformation thereof. The reinforcing element 20 of each tubular section IIa isv joined end to end with the reinforcing element 20 of the preceding section by wire tying or otherwise.v Prior to the applicationy of the cementitious material to form ay tubular section IIBa., a

section of the reinforcing material is wrappedl We prefer that the length of the f plying the cementitious mixture to the form in constructing a tubular section 16a may be employed if desired.

The upper end of each tubular section Ilia of the cementitious material is frusto-conical and extends short of the upper extremitycf its reinforcing fabric cylinder 20. This is so that when the succeeding tubular section is fabricated, the lower end of its reinforcing element 20 may be joined by wire tying or otherwise to the upper end of the reinforcing element 20 of the preceding section. The lower end of each succeeding tubular section Ia is formed directly over the frusto-conical end of the preceding section so as to become integrally joined therewith. Each tubular section Ia when formed is, ofcourse, permitted to remain on the form II a suflicient length of time to become form-sustaining.

To lower the cementitious casing I6 step by step as the tubular sections Ilia thereof are formed, the reinforcing cylinder or element 20 of the rst section of the casing iS is fitted with suspension bars or eyes ZI at its upper end and spacer guides 22 at its lower end. The latter act to maintain the lower extremity of the cementitious casing I6 concentric with respect to the pile I I. The suspension bars or eyes ZI are attached to the lower ends of chains or cables 23 which are led to a point above the pile or wharf to enable suspension of the cementitious casing I6 and the controlled lowering thereof as the sections of it are completed.

The tubular sections Ilia are successively formed until the cementitious casing rests on the` formation I2 into which the pile is driven. Obviously, the weight of the cementitious casing I6 is suflicient to sink the same through any mud strata overlying the solid formation into which the pile is driven.

When the casing has been thus formed and positioned in place, an annular spacing of approximately two inches or more will separate the inner periphery of the casing I6 from the outer periphery of the pile. This space is filled with sand cement grout in any preferred manner, thus forming a reinforced cementitious casing about the pile of approximately four inches thick and extending fro-m the formation I2 upwardly to any desired point above the water line v lwith the upper end of the last tubular section of the cementitious casing I6.

Obviously, by our improved method, weakened and deteriorated submerged piling may be eiliciently protected and reinforced by a tightly gripping, surrounding casing of reinforced cementitious material from the formation into which the pile is driven to any desired point above the water line. Further, it is apparent that` such cementitious casing may be applied to a pile at a comparatively low cost.

While we have described our invention in detail and the specific steps for practicing it, it is to be understood that various changes may be made in its construction by those skilled in the art without departing from the spirit of the invention as defined in the appended claims.

Having thus described our invention, what we claim and desire to secure by Letters Patent is:

1 A method Vof applying a cementitious casing to piling which comprises successively forming tubular sections of cementitious casing directly on the piling adjacent its upper end and of an internal diameter greater than the external diameter of the piling, and lowering said casing step by step on the piling as said casing is formed.

2. A method of applying a cementitious casing to piling which comprises successively forming tubular sections of cementitious casing directly on the piling adjacent its upper end and of an internal diameter greater than the external diameter of the piling, lowering said casing step by step on the piling as said casing isl formed, and filling the annular space between the casing and lthe piling with cementitious material after said casing has been completed.

3. A method of applying a cementitious casing to piling which comprises successively forming reinforced tubular sections of cementitious material directly on the piling adjacent its upper end and of van internal diameter greater than the external diameter of the piling, connecting each section as it is `formed to the preceding section. maintaining the casing so formed suspended on the pilingas the sections are formed, and lowering the casing step by step on the piling as the sections are formed until the bottom of the casing rests onthe formation into which the piling is driven. l

4. A method of applying a cementitious casing to piling which comprises successively forming reinforced tubular sections of cementitious material directly on the piling adjacent its upper end and of an internal diameter greater than the external diameter of the piling, connecting each section as it is formed to the preceding section, maintainingthe casing so formed suspended on the piling as the sections are formed, lowering the casing step by step on the piling as the sections are formed until the bottom of the casing rests on the formation onto which the piling is driven, and grouting the annular space between the casing and the piling after the casing has been completed.

5. A method of applying a cementitious casing to piling which comprises fitting a form to the piling adjacent its Aupper end, successively forming tubular cementitious casing sections on said form7 maintaining the casing so formed suspended on the piling, lowering the casing on the piling as each section is 'completed to remove the last completed section from the form, and connecting the lower end of each section while forming the same to the upper end of the preceding section.

6. A method of applying a cementitious casing to piling which comprises fitting a form to the piling adjacent its upper end, successively forming tubular cementitious casing sections on said form, maintaining the casing so formed suspended on the piling, lowering the casing on the piling as each section is completed torremove .the last completed section from the form, connecting the lower end of each section while forming the same to the upper end of the preceding section, and filling the space intermediate the casing and the piling with cementitious material after the casing has been completed.

7. A method of applying a cementitious casiinT to piling which comprises fitting a form to the piling adjacent its upper end, successively forming tubular cementitious casing sections on said form by spraying a cementitious mixture on said form, lowering the casing the length of a section after the formation of each section until the casing extends to the formation `into which the piling is driven,` and then lling the annular :space between the casing and the piling with cernent- "tious material.

8. A method of applying av cementitious casing to piling which comprises fitting a form to the piling adjacent `its upper end, successivelyy forming reinforced tubular cementitious casing sections on said form by successively arranging a reinforcing element over the form and spraying a cementitious mixture on said form embedding said reinforcing element, vlowering each section When formed from the form until the casing so piling adjacent its upper end, successively form;

. va cementitious mixture on said form emloed-y vding said reinforcing element, lowering each vvsection of 'casing `after it` is' formed from the constructed rests on the 'formation intowhich the y piling is driven, then filling the annular vspace between the casing and the piling with cementitious material.

ing kreinforced tubular cementitious casing sections on said form by successively arranging a re-v inforcing element over the form and spraying form, connecting each reinforcing element as it yisarranged on the lform to the reinforcing element of the preceding section, and joining each section as it is formed to the preceding section.

HARRY GAST. FRANK W. FREEMAN.

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