Pdf the ferrocement hollow box roof slab was evolved from the concept of the reinforced concrete waffle slab except for the addition of. Interlocking concrete pavement institute 1444 i street, n. Once the waterproofing membrane is laid, drying out of the structural slab will mostly take. It provides some additional advantages like possibility of future vertical extension and. Asc steel deck roof and floor deck products are designed. Reinforcement detailing of reinforced concrete slabs. This is a hidden gutter detail at the edge of a reinforced concrete pitched roof slab. Design the roof slab, beam and column of house given in figure 1.
Simply click a format link under each construction detail option to download a single file. Manual for design and detailing of reinforced concrete to the code. Alternatively, all the individual construction details below are in pdf, dwg and dxf formats. Manual for design of slabs, pile caps and footings.
The main span beams are inverted to form roughs for a water. Floor deck design guide structural steel roof and floor deck. Construction details litecrete lightweight precast concrete. Spalled concrete repair details structural engineering. The most common residential foundation materials are concrete masonry i. Concrete paving units for roof applications smith, d. A civil engineer must know all the aspects regarding the flat floor system.
Direct design method ddm for slab systems with or without beams loaded only by gravity loads and. Exact specifications vary, but most concrete roofs are several inches thick. Sci p300 composite slabs and beams using steel decking best. The roof same as the walls embedded blocks of extruded polystyrene, connecting the walls to roof concrete rafters with a concrete slab on top supported by ridge beam,becoming a strong monolithic.
Large amount of water vapour can evaporate from reinforced. Slabongrade foundation with floor and footing poured as one unit and the floor at, or only slightly above, ground level. Details are available in both adobe acrobat reader pdf and cad dxf format. Design the concrete floor slab system shown below for an intermediate. Inclined reinforced concrete roof slab ridge clay tiles detail. In january, 1987, the roof tile committee of the frsantrma was commissioned to develop and write consensus guidelines for the installation of concrete and clay roof tiles.
Twoway joist concrete slab floor waffle slab system. Roof flashing details index fd01 interior roof drain detail fd02 interior drain with gravel stop detail fd03 scupper roof drain detail fd04 gutter roof drain detail fd05 rooftop equipment curb detail. This guide covers the design and construction of composite slabs and beams, and. Aci318 code provides two design procedures for slab systems.
Roof coverings and best practices roof coverings and. For 1 bag of cement use maximum of 25 litres of water 12. Twoway joist concrete slab floor waffle slab system analysis and design design the concrete floor slab system shown below for an intermediate floor with partition weight of 50 psf, and unfactored live. Openings in concrete floor slabs buildings if you took an advanced concrete design course, you probably had a good introduction to the design of twoway slabs. In lieu of detailed calculation for deflections, aci 318 minimum slab. The blocks come in several sizes, but this guide will assume you are using a 16 34 inch. One of the most crucial step in building a flat concrete roof is to figure out the size of the concrete block you will need.
Recently, the national tile roofing manufacturers association ntrma changed its name to tile roofing institute. Flat slab analysis, design and detailing pdf civil. Reinforcement detailing of a slab is done based on its support conditions. Flat slab system is an important division of concrete floor system. The old roof membrane has leaked like a sieve and at the beginning of the project they found one location where the rebar had corroded and caused the bottom of the slab to spall.
Slab supported on two sides and bending takes place predominantly in one direction only is called one way slab. The slab depths in the tables are m e a s u red from the top of the slab to the bottom of the ribs in the decking. Dxf files can be imported directly into many common cad programs. Slab may be supported on walls or beams or columns.
The consensus document process included meetings over a period of eighteen 18 years, made up of roofing contractors. Reinforced concrete slab design and detailing guide is456. There are many parameters to consider when good roof performance is desired. Cantilever longitudinal and transverse reinforcement bars. Compatible with all standard concrete anchors composite deck 11. This is one of the common causes of flat roof waterproofing failure. Precast concrete construction are located at the midspan of beams and columns, whereas the longitudinal precast beamcolumn connections are located close to the columns. Oct 14, 2017 cross section detail of a reinforced concrete sloped inclined roof slab overhang cantilever cad detail drawing, supported from a concrete beam. How to build and setup a concrete foundation for garages, houses, room additions, etc part 1 duration. Slabs are elements forming floor and roofs in building which normally carry uniformly distributed loads. Load chara c t e r istics must obv i ously va r y with the decking configurations and.
Reinforced concrete slab design and detailing guidelines for depth of slab, loads on slab, reinforcement guide for oneway and twoway. Design of a durable roof slab insulation system for. Reinforced concrete sloped roof slab overhang detail. For example, the floridabased company hurricane proof systems offers a 7inch 18centimeter slab of concrete in three layers. Floor deck design guide structural steel roof and floor.
General notes university of colorado colorado springs. Autocad details dwg and dxf formatted cad detail files available for free viewing and downloading. Large amount of water vapour can evaporate from reinforced concrete or a wet screed. Qltd06 cavity wall lintel detail steel 6 qltd07 cavity wall lintel detail concrete 7 qltd08 hollowcore slabs 8 qltd09 joist hangers 9 qltd010 cavity wall eaves detail 10 qltd011 flat. Slab supported directly by columns are called flat slab. It is primarily used as a floor and roof deck system. Hollowcore is an extruded, prestressed concrete slab with continuous voids to reduce weight and cost. Cad details omg roofing products retrofit roof drains. P uet peshawar design of reinforced concrete components of a.
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