Gravel stop and building assembly employing the same

Claim 1

A GRAVEL STOP STRUCTURE FOR A SUBSTANTIALLY FLAT ROOF COMPRISING IN COMBINATION AN ELONGATED MEMBER HAVING A GENERALLY T-SHAPED TRANSVERSE CROSS SECTION DEFINED BY A CROSS MEMBER AND A STEM JOINED TO SAID CROSS MEMBER INTERMEDIATE THE ENDS OF SAID CROSS MEMBER, SAID CROSS MEMBER HAVING INNER AND OUTER SURFACES AND FORMING UPPER AND LOWER ARMS, SAID STEM HAVING A GENERALLY HORIZONTAL LENGTH SUFFICIENT TO ENGAGE SECURELY WITH THE TOP OF THE ROOFING MATERIAL ALONG THE EDGE OF THE ROOF, A BOTTOM JOINT MEMBER OF GENERALLY L-SHAPED TRANSVERSE CROSS SECTION ADAPTED TO HAVE INTIMATE CONTACT THROUGHOUT ITS LENGTH WITH BOTH THE UNDER SURFACE OF SAID STEM AND THE INNER SURFACE OF THE ELONGATED MEMBER ALONG THE LOWER ARM THEREOF, SAID BOTTOM JOINT MEMBER BEING DISPOSED AT THE END OF SAID ELONGATED MEMBER AND BRIDGING AN EXPANSION SPACE BETWEEN SAID ELONGATED MEMBER AND AN ADJOINING GRAVEL STOP STRUCTURE, A TOP JOINT MEMBER OF GENERALLY L-SHAPED TRANSVERSE CROSS SECTION ADAPTED TO CONTACT BOTH THE UPPER SURFACE OF SAID STEM AND THE INNER SURFACE OF THE ELONGATED MEMBER ALONG THE UPPER ARM THEREOF, SAID TOP JOINT MEMBER BEING DISPOSED ABOVE SAID BOTTOM JOINT MEMBER, AND MEANS FOR ALIGINING SAID ELONGATED MEMBER WITH AN ADJOINING GRAVEL STOP STRUCTURE.