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Water vapour Transmission Rate These test methods cover the determination of the properties of flexible membranes to be used as vapor retarders in contact with earth under concrete slabs, against walls, or as ground cover in crawl spaces. The test methods are applicable primarily to plastic films and other flexible sheets. The materials are not …
What is Solar Reflective Index ? The steady-state surface temperature (Ts) under the sun is strongly correlated to solar reflectivity and thermal emissivity of the surface. For equivalent conditions, the Ts of dark surfaces (with low solar reflectance) is higher than light-colored surfaces (with high solar reflectance); and surfaces with low thermal emissivity have higher …
1. Earth work in Excavation of foundation. Stability of existing structures. Before starting excavation trial pits should be dug to ascertain the depth of and nature of its foundation. Shoring should be used in all cases when the depth of excavation exceeds its distance from the existing structure Excavation . Foundation trenches shall be dug …
Earth work excavation in foundation, embankment, and under floor Read More »
General Specification of Second Class Buildings Foundation and Plinth. Foundation and Plinth shall be of Ist Class work laid mud mortar over a bed of lime concrete or cement concrete .Top course of plinth shall be of brick on edge laid in cement mortar 1:6 Superstructure :- All walls shall be built of first class brick …
General specification for Second and third class building Read More »
Foundation and Plinth. Foundation and Plinth shall be of Ist Class brick work in lime or cement mortar over a bed of cement concrete 1:6:18. Superstructure:- Superstructure shall be of Ist class brick work in cement mortar 1:6 or 1:7 Damp proof course. D.P.C shall be 4 cm thick cement concrete (1:2;4) with two coats of …
metric converter unit conversion table pdf metric system chart pdf conversion table of units metric conversion to inches measurement conversion chart conversion of units Linear measure 10 mm = 1 cm 10 cm = 1 decimeter 10 decimeters = 1 meter 10 meters = 1 decameter 10 decameter = 1 hectometer 10 hectometer = 1 kilometer 1000 mm = 1 m 100 cm …
Material Weight Unit Timber Teak Sal Deodar 600 860 560 Cu.m. Cu.m. Cu.m. Masonry Burnt brick in mud or cement mortar Sun-Dried brick work Stone masonry Dry stone masonry 1920 1600 2560 2080 Cu.m. Cu.m. Cu.m. Cu.m. . …
Figures Circumference Area Rectangle 2 (l + b ) L x b Square 4x x² Hexagon 6a A²√3×6/4 Octagon 8a 2a² (√2 +1) Circle ñd = 2ñr Ñd²/4 = ñr² Hollow circle ñ/4 ( D ² – d ²) = ñ ( R³ – r² ) Prism Area of base x height Perimeter …
This specification covers solid, kiln fired brick and tile made from clay, shale, or mixtures thereof, suitable for indoor and outdoor use in masonry construction subjected to chemical environments The brick and tile covered herein are intended for use in chemical environments where resistance to thermal shock may be a consideration. The brick and tile …
ASTM C279 :- Standard Specification for Chemical-Resistant Masonry Units Read More »
This test method covers determination of the compressive strength of hydraulic cement mortars, using 2-in. or [50-mm] cube specimens The mortar used consists of 1 part cement and 2.75 parts of sand proportioned by mass. Portland or air-entraining portland cements are mixed at specified water/cement ratios. Water content for other cements is that sufficient to …
