masonry cracks and leaks .. also wideslab design
masonry cracks and leaks .. also wideslab design
(OP)
We are in a tropical country and experiences lots of rainfall... our usual problems about masonry are Masonry Cracks and also Leaks especially on the interface of Solid concrete and masonry. Any suggestions?
Also, can anybody help me in the design of wideslabs? Wideslabs are precast slabs poured half ( or less ) and installed on the structural frame. The slab will then be used as a form on which the on site concrete will be poured. The slab will ultimately become a part of the structure. This can be done both as a prestressed or conventional way. I'm interested on the conventional method using wire mesh girders.
Also, can anybody help me in the design of wideslabs? Wideslabs are precast slabs poured half ( or less ) and installed on the structural frame. The slab will then be used as a form on which the on site concrete will be poured. The slab will ultimately become a part of the structure. This can be done both as a prestressed or conventional way. I'm interested on the conventional method using wire mesh girders.






RE: masonry cracks and leaks .. also wideslab design
As for the masonry do you construct your buildings in cavity construction ?
Kieran
RE: masonry cracks and leaks .. also wideslab design
- greater workability in the plastic mortar,
- greater flexibility in the set mortar (therefore fewer cracks) and
- greater ability to self heal the cracks that did form.
Suitable proportions of cement:lime:aggregate are:
1:1:6 for conditions of severe frost and exposure
1:2:9 for most normal work in exposed conditions
1:3:12 for internal work only
Mortars for structural work should, of course, be properly specified from the appropriate codes.
Properly detailed contraction joints at suitable intervals in masonry walls will allow the cracks to be dealt with at the design stage.
If all else fails, make sure you have plenty of silicone mastic.
RE: masonry cracks and leaks .. also wideslab design
RE: masonry cracks and leaks .. also wideslab design
Thanks!!!! i'll try the options you have suggested for our R&D evaluation.
kieran,
by CAvity Construction, if you mean two separate CHB walls... we are using only one; filled with mortar... usually using 6" thk. or sometimes EVG / 3D panels.
Other suggestions still appreciated when available.
ksd
RE: masonry cracks and leaks .. also wideslab design
a beam of 150mm. depth and thick ness same as wall will help to prevent the dampness to enter.for already existing building the cracked portion , the plaster is removed racked about 100mm on both sides of the crack fix a chicken wire mesh and cover it with 1:3 plaster.this will invariabley keep the moister away.
Pechetty.
RE: masonry cracks and leaks .. also wideslab design
Regards Mooslim