Hollow Concrete Block Wall Thickness

Concrete masonry units cmus are manufactured in a variety of sizes.

Hollow concrete block wall thickness. Footing should be poured twice as deep as the thickness of the wall and twice as wide. Every block of wall needs to be placed on a secure footing which is made from concrete. It can also be used in solid base materials. We offer two sizes of hollow concrete block to complement our range of solid dense blocks.

50 75 100 150 200 250 or 300 mm. 102 152 203 254 305 356 and 406 mm. During the drilling process spalling on the back side of the wall often decreases the wall thickness leaving only 1 or less for anchoring. They are manufactured to bs en 771 3 using class 1 limestone aggregates.

203 mm by 16 in. There are usually 108 8x8x16 blocks. 400 500 or 600 mm height. They are primarily used in locations that require construction using a reinforced concrete wall and in agricultural buildings.

406 mm available in nominal thicknesses of 4 6 8 10 12 14 and 16 in. Concrete block cmu sizes. Concrete blocks also come in half sizes which are helpful in reducing the need to cut blocks in the field at corners or the end of walls. The blocks are available in a standard face size of 440 x 215mm and in thicknesses of 140mm and 215mm in a standard finish suitable for rendering.

The thickness of the wall they create. Typically concrete masonry units have nominal face dimensions of 8 in. A 8x8x16 common size thick blocks with heavy gravel mix and small 3 ports can average around 56 lbs. The 8 inch pier blocks also have a small central core measuring 5 1 8 inches long by 3 8 inches wide.

Or as light as 28 pounds if hollow with lightweight mix. Actual sizes of concrete blocks are slightly less than the nominal sizes by roughly 3 8 inch in each dimension. The two large hollow cores on an 8 x 4 inch x 16 inch split pier block both measure 5 1 8 inches wide by 5 3 8 inches long. Footing is formed by using a frame of 2x4s and wooden stakes.

They are identified by their depth i e. According to the research designs standards organization of indian railways the nominal dimensions of concrete block are as follows. This is to accommodate the thickness of mortar joints between blocks. If you re using standard blocks 8 then your footing should be at least 16 wide.

Nominal dimensions refer to the module size for planning bond patterns and modular layout with respect to door and window openings. For instance a 6 cmu is nominally 6 deep while a 10 cmu is nominally 10 deep. The hollow set dropin anchor is designed for anchoring in hollow base materials such as hollow concrete block and precast hollow core plank. The concrete block is designed so that when the wall or edifice is installed rebar can be placed within the core of the cinder block to reinforce the structure these hollow cores which come in sets of either two or three take up approximately 50 percent of the block s total volume.