Table of Contents
What is allowable wastage?
Allowable wastage for steel works is 3 \%( i.e. cutting/bending wastage). For reconciliation purpose, + or -2\% allowable for rolling margin in this accounts. Above 25mm dia of rods 5\% wastage should be considered.
How do I estimate concrete wastage?
A.: Wasting 1/4 yard per 9 yards calculates out to 2.8\% waste. The book Concrete Construction & Estimating says to include 3\% waste for concrete placed on the ground but no waste for concrete placed in forms.
What is the wastage of concrete?
While estimating quantity of concrete for particular structural work, we normally consider 3-5\% as wastage. But wastage of concrete more than that can increase the cost of project and may impact project progress. So, it is necessary to control the concrete wastage at site.
What is allowable wastage limit of steel?
Allowable Wastage Of Construction Materials | LCETED | CONSTRUCTION MANAGEMENT
| MATERIAL | ALLOWABLE WASTAGE |
|---|---|
| Granite | 8\% to 12\% |
| Reinforcement Steel | 4.5\% to 6\% |
| Structural Steel | 12\% to 15\% |
| Bricks | 3\% to 4\% |
Is code for reinforcement steel?
IS: 1786 – cold-worked HYSD steel rebars (grades Fe415 and Fe500). IS: 432; 226; 2062 – mild steel of grade I. IS: 432; 1877 – mild steel of grade II. IS: 1566 – specifications for hard drawn steel wire fabric for reinforcing concrete.
What is rolling margin in steel?
Rolling margin is the difference between the theoretical and actual weight of steel. Over a period of time the shape of die changes and as a result, the diameter of the steel bar also changes which results in a difference in a unit weight of steel.
What is reconciliation of steel?
What is Reconciliation? It is the process of comparing the standard data with actual data after considering data relating to variances. E.g. Suppose 100 MT of 16mm dia. TMT steel bars of Fe-500 grade are procured. Assume that the weight of the bar received is 1.63 kg/ Rm.
What is material wastage?
Building material wastage can also be defined as the difference between the value of materials delivered and accepted on site and those properly used as specified and accurately measured in the work after deducting the cost saving of substituted materials transferred elsewhere in which unnecessary cost and time may be …
Which is code is used for steel?
IS: 2062 – specifications for steel for general purposes.
What is the allowable wastage for steel and concrete materials?
Steel Materials: Allowable wastage for steel works is 3 \%( i.e. cutting/bending wastage). For reconciliation purpose, + or -2\% allowable for rolling margin in this accounts. Above 25mm dia of rods 5\% wastage should be considered. Concrete Materials: Concrete pouring or placing time & during loading, transportation lot of concrete it will be waste.
What is the amount of cutting and wastage in structural steel materials?
Structural steel materials fabrication time lot of cutting and wastage it will be happened. Structural steel materials wastage normally 5 to 10\% will be considered.
Is it possible to construct a building without 10\% of wastage?
It is not possible to construct the building without 10\% of wastage. There are so many factors that are responsible for the wastage of materials. Take an example of Steel reinforcement, generally steel is placed and stored in open to air. As we know that steel is prone to corrosion with the contact of water.
What is the is code for the allowable percentage of wastages?
The construction works are measured as per the IS code 1200, but the allowable percentage of wastages has not explained anywhere. There are no IS codes for estimating the wastages. The allowable wastages for major construction materials have been listed below for estimation as per practical experience. 1.