On short spans, it is possible that the maximum conceivable load will be achieved—that is to say, on spans of less than 30 metres (100 feet), four heavy trucks may cross at the same time, two in each direction. per sq. structure and steel bracings in steel structure are extensively acceptable technique to place lateral load as a consequence of earthquake, wind, blast and so forth. ft. The default footing assumes a 40 psf live load and 10 psf dead load over a tributary area of 18 inches and one-half of the maximum span of 13 feet–3 inches permitted for solid stringers. Dead Loads - Precast ,Composite and Composite Additional Dead Load. The formulas used to determine the allowable uniform lo ads due to flex-ure (stress) and deflection are shown on page 6. To put this into more practical terms, Even if you place a paddling pool on this deck it could tip the balance for a safe load, let alone a … Conspan Interpretation of Two Lanes travelling in one direction and two lanes on the other direction. per sq. The next five steps calculate the positive moments due to dead load and the construction loads specified in the criteria namely: 20 PSF uniform load or 150 lb. Simple – if 1.0 kPa is equivalent to 100 kg over 1.0 m2, then 2.0 kPa must be equivalent to 200 kg over 1.0 m2. Generally, vertical loads are resisted solely by the structural concrete deck or other structural consideration of the existing roof system in conjunction with the dead load imposed by the addition of a Siplast … Doc Viewer To calculate the load, you should use 40lbs per square foot for live loads (these are variable loads that are dynamic such as the weight of people and furniture) and 15 lbs per square foot for dead loads (this is the weight of the materials used for the construction of the deck) for a total load … DC = Dead Load from Bridge Members, Formwork, Deck, etc. The load that each deck support column and the ledger are carrying is shown in different colors as the individual load areas. ft. Dead load of attic floor when floored = 20 lbs. The dead load of structural concrete slabs varies considerably with concrete type. )1– 4 10.0 Wood 3.0 Ceilings Acoustical fiber tile 1.0 Channel-suspended system Steel 2.0 Wood furring 2.0 Plaster on wood lath 8.0 Walls and partitions Brick (4-in. Part 2 Stair stringers should be supported by bearing at the end where the stairway meets grade. This calculates to 500 pounds. Joist dimensions are only part of the equation. Hence, the loads considered on the arch bridge are the self weight, UDL traffic action, and wheel load traffic action. Computing stresses at Top of Deck. is what we consider “dead load.” Then the remaining 10 lbs. deck design load of 2 kPa? 2.2.3 ASSESSMENT OF DEAD LOAD Nominal loading on 1m length of abutment: Deck Dead Load = (1900 + 320) / 11.6 = 191kN/m HA live Load on Deck = 1140 / 11.6 = 98kN/m HB live Load on Deck = 1940 / 11.6 = 167kN/m From BS 5400 Part 2 Figures 7 and 8 the minimum and maximum shade air temperatures are -19 and +37 o C respectively. Dead loads are also known as permanent or static loads. Vertical Load Data – Siplast Inc Vertical Load Data .roofing gravel or ballast, and other local conditions. per sq. A copy of the tables is provided in the Appendix and also ... Dead load moment = wtotall 2/8 = 1.2(44)(9)2(12)/8000 = 6.42 in.k Connection Details 6′ and Joist Span • Ground snow load commonly ~ 10 psf • Usually roof live load governs unless snow drifts are considered Frost Heave • Condition where soil under footing freezes and exerts upward movement on the foundation • Bottom of Footings must be below frost depth to avoid this issue, commonly 12 … Dead Load bending moments shown below are produced by a continuous beam model in CSiBridge 2017 using a uniform load for deck and wearing surface and a point load for barriers. Dead load of attic floor, not floored = 10 lbs. A typical wood-frame floor covered with carpet or vinyl flooring has a dead load of about 8 pounds per square foot; if there's wall-board covered ceiling suspended from the underside of that floor, the dead load increases to about 10 pounds per square foot. Let us see how these loads are calculated. per sq. The reactions resulting from the dead load and live load specified in Table 1607.1, or the snow load specified in Section 1608, in accordance with Section 1605, acting on the cantilevered portion of the deck, and no live load or snow load on the remaining portion of the deck. The following table provides typical weights (dead load, self-weight) for various roofing materials. Table 4 lists the concrete weight to be added to the deck weight to determine slab dead load. Note: The concrete weights listed in Table 4 do not include the allowance for deck deflection discussed on VF5 page 16. A structural deck will perform the function of transferring dynamic and dead loads of the roof covering to the frame, and will also provide the necessary lateral restraint to the main structural frame. The distance you can span a 2-by-10 joist without additional support depends on the species and grade of the wood, how far apart the joists are and the expected load on the joists. Snow load will affect a deck’s weight load in a big way. In modern times, shear wall in R.C. • The footprint of a concentrated load on a slab. The loading includes the weight of the structure and other fixed weights which are defined as the dead load. The specific method of attachment will determine the load distribution or effective width of deck to be used in the evaluation. building a deck platform to support hot tub. Note, that the load for area 2 and 4 are the same. • The large spacing between attachments of roofing material to steel deck under uplift conditions. You also need to ensure that the joist spacing is adequate. ft. of floor area Dead load of partitions = 20 lbs. If you are planning on building a raised deck it is important to determine the quantity, positioning and size of the structural members that will support the load of the deck, the dead load and the load created by the things that will go on the deck, including you and your guests which is the live load. For a Group 4 type structure (see fig. The might of the dead load, or lack thereof, often defines how much live load it can handle. The loads on a bridge deck are made up of: Self weight; the weight of the bare concrete structure. Dead Load of floor maximum 40 kg/m2 (Covers standard residential deck materials, including possible plasterboard ceiling below) Live Load for decks & verandahs over 1m above ground level 2.0kPa (with a check on a concentrated live load of 1.8kN anywhere) ETH LAM GL beams are manufactured straight, without any camber built into the beams. is considered “live load.” There are a number of different Load Types that may used when loading the model. Structural steel offers much less of a dead load and provides superior support for live loads in multi-story buildings. Assuming 1 1/2" composite metal deck with 2 1/2" normal weight concrete fill (4" total), the catalog gives a dead load of 39 psf. ft. of floor area Dead load on second floor = 20 lbs. Live loads, or imposed loads, are temporary, of short duration, or a moving load. Loads. In many cases, ceiling joists for dead loads are designed to carry 10 pounds per square foot (psf), as opposed to the 40 or greater psf that live-load joists must carry. 8000lb live load, 49 sq ft hot tub (7X7), ~160 psf live load plus 20 psf dead load. the effects of those concentrated loads on the deck or composite deck-slab. Live load. The uniform load moment coefficients assumed in the calcula-tions … Dead Load is the vertical load due to the weight of permanent structural and non‐structural components and attachments of a building such as walls, floors, ceilings, permanent partitions and fixed service equipment etc. For example: • The wheel load of rolling equipment on the steel deck during roofing material installation. Super dead load: Loading except the self-weight of structure is said to be super dead load. Reinforced concrete creates the heaviest dead loads but also supports the most weight with its tremendous compressive strength. Jointly gravity load and the lateral load should be resisted as it builds up acute pressures in a building. )–1 4 2.0 Clay tile 12.0 Clay tile with mortar 22.0 Slate ( -in. To support 50 lbs., first consider that 40 lbs. thickness) 15 per sq. The bridge deck has been subjected to Load Model 1 on 2 notional lanes, and a remaining area of 2 m. The tandem load system on the bridge was modelled as a moving load on Staad Pro. Building materials are not dead loads until constructed in permanent position. per square foot. Metal deck 3.0 Roll roofing 1.0 Shingles Asphalt ( -in. thinking of having 3 beams underneath hot tub, double 2X12 southern pine, spanning 6', supported on each end by footings and 6X6 posts. concentrated load on one foot of deck width. ft. (Storage space.) The dead load on a floor is determined by the materials used in the floor's construction. STRUCTURAL DECK PROFILES. Based on the density mentioned above Super dead load like, wall load, floor finish, water proofing on terrace, water tank load comes is super dead load category. The load combinations are hard coded into the program based on the selected code. Since the load factors on combinations of Dead + Roof + Live loads can vary depending on the live load type or magnitude we took the conservative approach of treating all the live loads with the same load factor. Dead load of partitions = 20 lbs. ... • DW: Dead Load of wearing surface and utilities. Loads on bridge decks. EXAMPLE 6 - , A 7 & 10M 3 2018 Results of analysis: Engineers must estimate the traffic loading. Where possible, the values were taken directly from manufacturer technical data sheets and are the actual weights of specific, representative products. Looking at Figure 3 we can instantly see that each deck support column is not carrying an equal load. By spanning a decking profile from rafter to rafter, the need for purlins can be eliminated in a portal frame design. Superimposed dead loads; the weight of permanent loads applied to the bare concrete structure, such as parapets, footpaths, road surfacing etc. DC1 – Concrete = 150 lbs/ft3 DC2 – Stay-in-place Formwork = 15 psf DW = N/A for Non-Composite Construction CDL = Construction Equipment loads such as screed rails, overhang forms, temp railing, walkway CDL1 – Removable Coping Deck … 0.005 ksf * 1 ft. = Typical Section. Live load and dead load. A Vulcraft metal deck catalog has weights for various decks sizes and concrete fill combinations. dead load. Deck Ledger Connection to Band Joist a, b (Reference IRC Table R507.2 - Deck live load = 60 psf, deck dead load = 10 psf, snow load≤ 40 psf) For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square foot = 0.0479kPa. IS875(part 1)-1987 give unit weight of building materials, parts, components. 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