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Different Wall Symbols in Floor Plan
06/09/2024

Different Wall Symbols in Floor Plan

Basic Questions and Answers for Civil site Engineer & site supervisor
20/06/2024

Basic Questions and Answers for Civil site Engineer & site supervisor

Moisture content and density are two most important properties for woods.The moisture content of tree varies with specie...
12/05/2024

Moisture content and density are two most important properties for woods.
The moisture content of tree varies with species, age, size, location and so on. Generally, trees contain water about two times the weight of its solid material.
For softwoods, the moisture content in sapwood is significantly higher than that in heartwood. As for hardwoods, the difference could be negligible. When wood went through all process and ready for construction purposes, it usually achieves equilibrium moisture content. At this point, the wood may not gain or loss moisture content to the surrounding air.
The specific gravity of wood varies with its condition, notably green, air-dry and oven-dry. Therefore, specific gravity of a wood must be qualified by the moisture content at the time.
Freshly cut lumber, which is also known as green wood is heavier than dry wood due to rich content of water. The weight of sapwood is also greater than that of heartwood. After drying however, heartwood would be heavier than sapwood.

Important points
23/07/2023

Important points

Clear cover to main reinforcement
20/07/2023

Clear cover to main reinforcement

How to calculate sand, aggregate I'm truck
20/07/2023

How to calculate sand, aggregate I'm truck

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30/05/2023

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Quantity Estimation Sheet.
30/05/2023

Quantity Estimation Sheet.

California bearing ratio
30/05/2023

California bearing ratio

Basic important points
30/05/2023

Basic important points

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