Concrete structural member

Claim 2

A structural guard member comprising: a. at least one elongated, relatively thin outer shell member preformed of reinforced concrete and having an outer surface defining an outer peripheral shape of a desired structure, said shell member having end flanges of a height substantially the same as the side thereof with the flanges being adapted to abut with another form member to form a space for receiving a filler of castable material; b. an inner core of solid castable material adhered to the inner face of and forming a continuation of said shell member; c. said shell member having an average thickness considerably less than the average thickness of the overall composite structure of said shell member and said inner core such that said shell member would not, standing alone, be of sufficient strength to withstand impacts from moving motor vehicles.

Claim 3

The concrete structural member as set forth in claim 1 including a reinforcing means within said core.

Claim 4

The concrete structural member as set forth in claim 1 including a pair of elongated outer shell members spaced from each other with their inner faces confronting each other, with the outer surface of each shell member shaped to define a desired structure; each of said shell members having end flanges of a height substantially the same as the sides thereof with the flanges adapted to abut each other such that a space for receiving a filler of castable material is defined between said shell members; and wherein said core is adhered to each inner face of both of said shell members.

Claim 5

The concrete structural member as set forth in claim 3 including rod means extending between both of said shell members and through said core for holding said shell members together prior to casting of said core and for reinforcing said core.

Claim 6

The concrete structural member as set forth in claim 1 wherein said core is formed from concrete.

Claim 7

In combination with a bridge deck, a parapet structure comprising: a. an elongated relatively thin outer shell member preformed of reinforced concrete and having an outer surface defining the desired shape of the inner face of the parapet and disposed inwardly adjacent the bridge deck; said shell member having end flanges of a height substantially the same as the side thereof with the flanges adapted to abut with another form member to form a space for receiving a filler of castable material; b. a core of solid castable material adhered to the inner face of and forming a continuation of said shell member and extending substantially to the side of the bridge deck; c. reinforcing means secured at one end to the bridge deck and extending upwardly into said core; and said shell member having an average thickness considerably less than the average thickness of the overall composite structure of said shell member and said inner core such that said shell member would not, standing alone, be of sufficient strength to withstand impacts from moving vehicles.

Claim 8

In combination with a bridge deck, a parapet structure comprising: a. an elongated relatively thin outer shell member preformed of reinforced concrete and having an outer surface defining the desired shape of the inner face of the parapet and disposed inwardly adjacent the bridge deck; said shell member having end flanges of a height substantially the same as the side thereof with the flanges adapted to abut with another form member to form a space for receiving a filler of castable material; b. a core of solid castable material adhered to the inner face of and forming a continuation of said shell member and extending substantially to the side of the bridge deck; c. reinforcing means secured at one end to the bridge deck and extending upwardly into said core; and said shell member having an average thickness considerably less than the average thickness of the overall composite structure of said shell member and said inner core such that said shell member would not, standing alone, be of sufficient strength to withstand impacts from moving vehicles.

Claim 9

The combination as set forth in claim 6 wherein said core has the side thereof opPosite said shell member lying in a vertical plane including the side of the bridge deck.

Claim 10

The combination as set forth in claim 6 wherein said core is formed of concrete.

Claim 11

A median barrier along the center of a road constructions comprising: a. a pair of identically shaped relatively thin outer shell members preformed of reinforced concrete and spaced from each other with their inner faces confronting each other, and with the outer surface of each outer face member having a contoured shape such that together the pair of shell members define the desired median barrier shape; said shell members having end flanges of a height substantially the same as the sides thereof with the flanges of both shell members being adapted so abut each other whereby a space is formed between the shell member for receiving a filler of concrete; b. an inner core of solid concrete adhered to the inner faces of both of said shell members, thereby forming a composite integral structure with said shell members; c. each of said shell members having an average thickness considerably less than the average thickness of said composite integral structure such that said shell members either standing alone or together would not be of sufficient strength to withstand impacts from moving vehicles.

Claim 12

A median barrier along the center of a road constructions comprising: a. a pair of identically shaped relatively thin outer shell members preformed of reinforced concrete and spaced from each other with their inner faces confronting each other, and with the outer surface of each outer face member having a contoured shape such that together the pair of shell members define the desired median barrier shape; said shell members having end flanges of a height substantially the same as the sides thereof with the flanges of both shell members being adapted so abut each other whereby a space is formed between the shell member for receiving a filler of concrete; b. an inner core of solid concrete adhered to the inner faces of both of said shell members, thereby forming a composite integral structure with said shell members; c. each of said shell members having an average thickness considerably less than the average thickness of said composite integral structure such that said shell members either standing alone or together would not be of sufficient strength to withstand impacts from moving vehicles.

Claim 13

The median barrier structure as set forth in claim 9 including reinforcing means extending upwardly into said core from beneath said core to a point at least intermediate the lower and upper ends of said core.

Claim 14

The median barrier structure set forth in claim 9 including rod means extending between both of said shell members and through said core for holding said shell members together before said core is cast and for reinforcing said core.

Claim 17

The method as set forth in claim 12 wherein said positioning is of another identically shaped outer shell member.

Claim 18

The method as set forth in claim 13 including the step of securing with rod means the oppositely arranged outer shell members.

Claim 19

The method as set forth in claim 12 including the step of removing the form member after the core has at least set.

Claim 20

The method as set forth in claim 12 wherein said casting of the core is preformed with concrete.