Construction Calculators

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Rakes Gables and Centres

We have a wall, and its mill long , the angle is °, so

We have a wall. Its mill high and mill long so

This wall is mill high and mill long so

Ok, its mills long and the angle is ° so

We need to go up a rake and mark cleats at centers that are plumb above the ones below, that are level, but because we're on the rake, the centers need to be further apart to be plumb. The points below are at mill centers on the level and the angle is °. so so as they're plumb above the ones below
Print me out the running measurements up the rake starting at mill(level) Print

Print Running centres Sheet

We need to go up a rake and mark a point thats directly plumb above a point below. We cant plumb up because theres stuff in the way. The point below is mill level in from the end, and the angle is °. so to the point directly plumb above the one below

We need to cut this block at an angle . The block's millimeters wide or long and the angle is ° so in mills from one side to the other to make this angle

We need to lay these blocks up on an angle, and the ends have to be cut plumb. The angle is ° and the blocks are high, so that I need to cut the bottom shorter than the top, so as when I lay the end block on the angle, the cut end is plumb

We have a gable with bond beams on top, and the angle is °. The blocks are mill high, the joints are 10 mill and theres bond beam courses. So down from the top do we need to go to start the stretcher cuts, so as when we lay the bond beams on top, they end up at the right height

We know the pitch, so how do we work out the angle. Pitch is Rise in Length. If its 5m long and rises 1m, its a pitch of 1 in 5
We got a pitch (rise) of in length of so 1 in 1 = 45°

Circles

We have a circle , and its radius is mill from the outside to the middle
so right round the outside and

We have a part of a circle Its radius is mill, from the outside to the middle, but the circle only goes for °, so round the outside of the part of the circle and of the part inside

We have a part of a circle. We know where it starts and the radius is , and the part of the circle goes for °. We worked out how far round the outside, but we cant measure round the outside properly to see where it ends. We pulled a tape from the middle to lay the blocks, but we're not sure where to end. If we measure straight accross from the start point to where it should end, sort of like the string in a bow,

Angles

Its an angle , and its supposed to be ° deviation, so if we meausure up each side mills from the point the angle is it between the 2 points to get this angle

This time we measured up each side of the angle mills, and its mills accross between the 2 points , so

Sheets

Print me out a Sill heights sheet so we can mark out the number of stretchers, Knockouts , Half-heights and sills under windows
in standard 200 Series blockwork. Print

Print Sill Height Sheet

Knock me up a Quick Count sheet so we get a quick count on total blocks in this building. Print

Print QuickCount Sheet

Common calculations for bricklayers and blocklayers

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Masonry Construction Specialists
Port Douglas - Mossman - Cairns Australia
ph: 0400 508 558

Greg Tarrant
ph: Australia +61 7 40987645

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