Short Duration 3 hr Storm Conversions
The critical storm duration is defined as the point when a maximum peak for a given occurrence takes place.
Short Duration 3 hr Storm Conversions Read More »
December 15, 2021
Design Sheet for Pipe Watercourses
According to the Environment Agency, a watercourse is ‘… any natural or artificial channel above or below ground through which water flows, such as a river, brook, beck, ditch, mill stream or culvert. Main rivers include rivers, larger streams and smaller watercourses of strategic drainage importance
Design Sheet for Pipe Watercourses Read More »
INLET SPACING – CURB AND GUTTER SPREADSHEET (ENGLISH UNITS)
For inlets on grade, the gutter spread refers to the spread just upstream of the inlet and is based on the gutter properties, flow, etc. Inlet spread refers to the spread at the center of the inlet face.
INLET SPACING – CURB AND GUTTER SPREADSHEET (ENGLISH UNITS) Read More »
HYDROLOGY BY RATIONAL FORMULA (English or Metric Units)
The Rational Method expresses a relationship between rainfall intensity and catchment area as independent variables and the peak flood discharge resulting from the rainfall as the dependent variable. It has been used for over 150 years, and known as the Rational Method for nearly 100 years.
HYDROLOGY BY RATIONAL FORMULA (English or Metric Units) Read More »
Drinking Water Supply Scheme (Gravity Flow)
Gravity flow water distribution systems are reliable and cost effective over pumping systems as no external power is required to maintain the flow. … Also developed is a criterion for the choice between the pumping and gravity systems where the elevation difference is marginal.
Drinking Water Supply Scheme (Gravity Flow) Read More »
DESIGN OF PIPE UNDER GRAVITY FROM A SOURCE
The gravity flow of water is when the flow of water in a pipe is caused by the force of gravity. The flow will happen as long as there is an altitude difference between the source water (upstream source) and the discharge point.
DESIGN OF PIPE UNDER GRAVITY FROM A SOURCE Read More »
CHANNEL DESIGN BY LACEY’S THEORY
Lacey’s theory is based on the concept of the regime condition of a channel which will be satisfied if, The channel is flowing uniformly in unlimited incoherent alluvium of the same character which is being transported by the channel. The silt grade and silt charge remain constant. The discharge remains constant.
CHANNEL DESIGN BY LACEY’S THEORY Read More »
TRAPEZOIDAL CURVELINEAR SECTION
Trapezoidal rule approximates area under the curve With this method, we divide the given interval into n subintervals, and then find the width of the subintervals. We call the width Δx. The larger the value of n, the smaller the value of Δx, and the more accurate our final answer.
TRAPEZOIDAL CURVELINEAR SECTION Read More »
DESIGN OF CANAL SECTION
Canal section is designed for the discharge as worked out in column ‘Cumulative. Discharge’ of cut-off statement. Same section may be adopted for a group of adjacent. outlets if variation in discharge is nominal. Bed width v/s depth ratio as given below should.
DESIGN OF CANAL SECTION Read More »
SHEAR AND TORSION DESIGN OF BEAM
Shear design of reinforced concrete (RC) beam involves the determination of spacing between stirrups. Shear is a word used for forces that work perpendicular to the longitudinal axis of RC beam. … RC concrete beams cracks in flexure due to principal tension stresses which are horizontal in the middle of the beam span. If external loads
SHEAR AND TORSION DESIGN OF BEAM Read More »
Earthquake Lateral Forces according UBC 97:
Earthquake forces are called lateral forces because their predominant effect is to apply horizontal loads to a building. Although earthquake waves do impart a vertical component of force to buildings, the weight of the building normally provides sufficient resistance.
Earthquake Lateral Forces according UBC 97: Read More »
Seismic Analysis Based on UBC 1997
Seismic analysis is a subset of structural analysis and is the calculation of the response of a building (or nonbuilding) structure to earthquakes. … It later became clear that the dynamic properties of the structure affected the loads generated during an earthquake.
Seismic Analysis Based on UBC 1997 Read More »
Tables for Wood Post Design Based on NDS 2005
AMERICAN WOOD COUNCIL. NATIONAL DESIGN SPECIFICATION FOR WOOD CONSTRUCTION vii. LIST OF TABLES FOR THE NDS. 2.3.2. Frequently Used Load Duration.
Tables for Wood Post Design Based on NDS 2005 Read More »
Shear Wall Design Based on IBC 06 / CBC 07 / NDS 05
In structural engineering, a shear wall is a vertical element of a system that is designed to resist in-plane lateral forces, typically wind and seismic loads. In many jurisdictions, the International Building Code and International Residential Code govern the design of shear walls.
Shear Wall Design Based on IBC 06 / CBC 07 / NDS 05 Read More »
Wood Joist Design Based on NDS 05 / NDS 01, ICC PFC-4354 & PFC-5803
A joist is a horizontal structural member used in framing to span an open space, often between beams that subsequently transfer loads to vertical members. … Typically, wood joists have the cross section of a plank with the longer faces positioned vertically.
Wood Joist Design Based on NDS 05 / NDS 01, ICC PFC-4354 & PFC-5803 Read More »
Wood Diaphragm Design Based on NDS 2005
Diaphragms are a roof, floor or other system transferring lateral forces applied to a building to the vertical elements, such as the shear walls. … The construction requirements and load capacities of WSP sheathed diaphragms are found in the American Wood Council’s Special Design Provisions for Wind and Seismic (SDPWS).
Wood Diaphragm Design Based on NDS 2005 Read More »
Wood Post, Wall Stud, or King Stud Design Based on NDS 2005
A post is a main vertical or leaning support in a structure similar to a column or pillar but the term post generally refers to a timber but may be metal or stone. A stud in wooden or metal building construction is similar but lighter duty than a post and a strut may be similar to a
Wood Post, Wall Stud, or King Stud Design Based on NDS 2005 Read More »
Bolt Connection Design Based on NDS 2005
Bolted joints are one of the most common elements in construction and machine design. They consist of fasteners that capture and join other parts, and are secured with the mating of screw threads. There are two main types of bolted joint designs: tension joints and shear joints.
Bolt Connection Design Based on NDS 2005 Read More »
Wood Truss Design Based on NDS 2005
Timber trusses are wooden structural frameworks used to support roofs or other heavy structures. Fabricated from a series of triangles linked by a ridge beam and purlins, wooden trusses are structurally advantageous due to their high strength-to-weight ratios and corresponding ability to support long spans.
Wood Truss Design Based on NDS 2005 Read More »
Top Plate Connection Design Based on NDS 2005
Connection plates are an ideal connection method when machining isn’t possible, or intrusive to the frame. Our connection plates come in both Inch and Metric sizes for your unique design needs.
Top Plate Connection Design Based on NDS 2005 Read More »
Visit 