Runback backstructure access system

Abstract

A runback backstructure access system for removably providing access between building floors of a building structure. The system includes: first and second tower legs with first and second rosette attachment connectors; a first landing beam mountable between the first and second tower legs; first and second landing beam support connectors connectable respectively to the rosette attachment connectors; at least one building support connector for connecting the first landing beam to the building structure; third and fourth tower legs with third and fourth rosette attachment connectors; a second landing beam mounted between the third and fourth tower legs; third and fourth landing beam support connectors for connecting to the third and fourth rosette attachment connectors; and at least one strut member for connecting the first landing beam to the second landing beam.

1 . A runback backstructure access system ( 10 ) for removably providing access between building floors (F) of a building structure (B), the system ( 10 ) comprising:
 a first tower leg ( 14 ) comprising a first rosette attachment connector ( 12 );   a second tower leg ( 14 ) comprising a second rosette attachment connector ( 12 );   a first landing beam ( 18 ) mountable between the first and second tower legs ( 14 );   a first landing beam support connector ( 20 ) connectable on a first end of the first landing beam ( 18 ), the first landing beam support connector ( 20 ) comprising a first tethered pin for removably connecting to the first rosette attachment connector ( 12 );   a second landing beam support connector ( 22 ) connectable on a second end of the first landing beam ( 18 ), the second landing beam support connector ( 22 ) comprising a second tethered pin for removably connecting to the second rosette attachment connector ( 12 );   at least one building support connector ( 16 ) for connecting the first landing beam to the building structure (B);   a third tower leg ( 14 ) comprising a third rosette attachment connector ( 12 );   a fourth tower leg ( 14 ) comprising a fourth rosette attachment connector ( 12 );   a second landing beam ( 18 ′) mounted between the third and fourth tower legs ( 14 );   a third landing beam support connector ( 24 ) connectable on a first end of the second landing beam ( 18 ′), the third landing beam support connector ( 24 ) comprising a third tethered pin for removably connecting to the third rosette attachment connector ( 12 );   a fourth landing beam support connector ( 26 ) connectable on a second end of the second landing beam ( 18 ′), the fourth landing beam support connector ( 26 ) comprising a fourth tethered pin for removably connecting to the fourth rosette attachment connector ( 12 ); and   at least one first strut member ( 28 ) for connecting the first landing beam ( 18 ) to the second landing beam ( 18 ′).   
     
     
         2 . The system of  claim 1 , comprising:
 a landing deck ( 30 ) mountable on top of the first and second landing beams ( 18 ,  18 ′).   
     
     
         3 . The system of  claim 1 , further comprising:
 a fifth tower leg ( 14 ) comprising a fifth rosette attachment connector ( 12 );   a sixth tower leg ( 14 ) comprising a sixth rosette attachment connector ( 12 );   a third landing beam ( 18 ″) mountable between the fifth and sixth tower legs ( 14 );   a fifth landing beam support connector ( 32 ) connectable on a first end of the third landing beam ( 18 ″), the fifth landing beam support connector ( 32 ) comprising a fifth tethered pin for removably connecting to the fifth rosette attachment connector ( 12 );   a sixth landing beam support connector ( 34 ) connectable on a second end of the third landing beam ( 18 ″), the sixth landing beam support connector ( 34 ) comprising a sixth tethered pin for removably connecting to the sixth rosette attachment connector ( 12 ); and   at least one second strut member ( 36 ) for connecting the second landing beam ( 18 ′) to the third landing beam ( 18 ″).