Drilling calculator for expansion joints between wall and substrate / foundation slab
Drilling calculator for expansion joints between wall and substrate / foundation slab
Enter wall thickness [ D ]:
cm
Enter floor slab thickness [ H ]:
cm
Length of seal sleeve on injection packer:
cm
Number of holes per meter of joint length for given wall thickness:
Hole spacing [cm] :
Shortest permissible drill bit length (working length) [cm]:
Calculations
Drilling angle in wall
Drilling angle in floor
Height [ h ] at which hole intersects wall for given drilling angle [cm]:
Drill into wall at this height above floor
Drilling into floor: Distance [ i ] away from wall at which hole should be drilled for given angle, as measured along floor [cm]
Commence drilling based on this info:
Drilling angle
Calculated hole length between hole entry point and joint between wall and substrate – drill bit working length [cm]
Recommended length of injection packer. Pertains to reinforced concrete slab construction, not walls made of concrete blocks [cm]
