to be encapsulated in a concrete slab the arm like structures 434 436 438 and 440 are provided in pairs of two opposable arms that form receiving areas for holding the infrastructure 102 as shown in fig4 arm 434 opposes arm 436 similarly arm 438 opposes arm 440 each arm set 436 and 434 and 438 and 440 have inside surfaces 442 with centers that are curved outward from each other and have a bottom portion and top portion that are arranged in a configuration similar to a set of parenthesis this configuration will allow the arms to fit securely around and make uniform contact with a round outer surface of a cable only the bottom of each opposable arm is attached to the upper section 402 the upper portions of the arms 434 436 438 and 440 are disposed so that the gap between them is slightly smaller than the diameter of the cable that they designed to hold optimally the arms 436 434 438 and 440 will be made of a flexible material that will allow them to bend slightly and therefore allow the cable to slip securely between the arms referring now to fig8 it can be seen that arms sets 434 and 436 are offset from arm sets 438 and 440 and in line with a third set of arms 446 and 448 so that each adjacent set is disposed in an opposite one of two parallel lines 802 amp 804 of arm sets when the upper portion of arm 436 is bent in a direction opposite arm 434 the upper portion of arm 436 will not make contact with arm 438 because of the offset this feature allows each set of arms to expand to allow a cable to be inserted between them.