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What is the tolerance for compression test results of concrete, according to the standards?
Fasi Ur Rahman
According to ACI 301-1.6.6 -“The strength of concrete is satisfactory provided that every average of three consecutive strength tests (sets) equals or exceeds the specified compressive strength and no strength test (set) falls below the design strength by more than 500 psi.
According to ACI 301-1.6.6 -“The strength of concrete is satisfactory provided that every average of three consecutive strength tests (sets) equals or exceeds the specified compressive strength and no strength test (set) falls below the design strength by more than 500 psi.
See lessWhat are the different types of handrails used in bridges?
Fasi Ur Rahman
A bridge’s railing depends on various factors such as location, material, and purpose. The railing adds safety for pedestrians, aesthetics, and a custom touch to bridge construction. The different types of handrails used in bridges are: Steel Bridge Railing W-Beam Railing Concrete Bridge RailRead more
A bridge’s railing depends on various factors such as location, material, and purpose. The railing adds safety for pedestrians, aesthetics, and a custom touch to bridge construction.
The different types of handrails used in bridges are:
- Steel Bridge Railing
- W-Beam Railing
-
See lessConcrete Bridge Railing
Why English bond is stronger that Flemish bond?
Fasi Ur Rahman
English bond and Flemish bond are the two most common brick masonry patterns used in wall construction. A brick construction pattern with alternate courses of brick laid as stretchers and headers forms an English bond. A flemish bond is a brick construction pattern that consists of alternate stretchRead more
English bond and Flemish bond are the two most common brick masonry patterns used in wall construction.
A brick construction pattern with alternate courses of brick laid as stretchers and headers forms an English bond.
A flemish bond is a brick construction pattern that consists of alternate stretchers and headers for each course.
Detailed features of English and Flemish bonds along with their difference are explained in the article link given below-
English Bond and Flemish Bond – Features & Difference
See lessHow to find the rebar spacing when not mentioned in the drawing?
Fasi Ur Rahman
The rebar spacing must be mentioned in the drawing. The drawing without rebar spacing is incomplete. This is because the rebar spacing is obtained during design calculation.
The rebar spacing must be mentioned in the drawing. The drawing without rebar spacing is incomplete.
See lessThis is because the rebar spacing is obtained during design calculation.
Is the quality of welding (shown in the picture) acceptable in column lapping?
Fasi Ur Rahman
This is the wrong method of lapping rebars in the column. The lapping length of the rebar must be 46d. For 16mm bar, =16 x 48 =768mm The lapping shall be shattered and not in one place. Â And the welding must be done for the whole 768mm on both sides.Â
This is the wrong method of lapping rebars in the column.
The lapping length of the rebar must be 46d.
For 16mm bar,
=16 x 48 =768mm
The lapping shall be shattered and not in one place. Â
And the welding must be done for the whole 768mm on both sides.Â
See lessHow to Fix Roof Leakage?
Fasi Ur Rahman
The first and foremost reason is leakages which are caused due to joints in the roof. If it is a sloping roof, then chances are there at the joints and junctions. One of the reasons why roof tiles break is simple wear and tear. In addition to wear and tear, harsh weather conditions may cause tiles tRead more
The first and foremost reason is leakages which are caused due to joints in the roof. If it is a sloping roof, then chances are there at the joints and junctions.
One of the reasons why roof tiles break is simple wear and tear. In addition to wear and tear, harsh weather conditions may cause tiles to fall apart. If it is a flat roof, the chances of leakages are due to poor workmanship or cold joints in the concrete.
The roof leakage can be fixed by following repair methods-
The cost of repairing a flat roof is generally affordable but really depends upon the extent of the damage, the location of the project, and the availability of repairing agencies.
To read in detail about the repair procedure and cost incurred for fixing roof leakage, read the article-
Roof Repairs – Guidelines for Repairs of Roof for Damages and Leakages
See lesswhat is the height of brickwork after which extra cost for brickwork is provided as per schedule of rates?
aviratdhodare
Normally, after three meter from the DPC of ground floor level or one floor which should not be more than 4 m height, contactor can charge for extra height if it is not mentioned in the contract about this .
Normally, after three meter from the DPC of ground floor level or one floor which should not be more than 4 m height, contactor can charge for extra height if it is not mentioned in the contract about this .
See lessHow the properties of reflection can be used in material selection a building?
nikeetasharma
The property of reflection can be used for the selection of material like glass for windows, tiles, etc.
The property of reflection can be used for the selection of material like glass for windows, tiles, etc.
See less